./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 26d01a9c 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/McCarthy91_Recursion.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 b4d53423478efbe88c69a2c2de1bb984f61e7e586fd7bb6761452f26ace425f7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 07:57:36,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 07:57:36,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 07:57:36,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 07:57:36,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 07:57:36,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 07:57:36,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 07:57:36,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 07:57:36,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 07:57:36,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 07:57:36,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 07:57:36,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 07:57:36,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 07:57:36,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 07:57:36,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 07:57:36,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 07:57:36,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 07:57:36,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 07:57:36,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 07:57:36,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 07:57:36,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 07:57:36,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 07:57:36,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 07:57:36,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 07:57:36,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 07:57:36,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 07:57:36,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 07:57:36,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 07:57:36,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 07:57:36,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 07:57:36,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 07:57:36,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 07:57:36,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 07:57:36,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 07:57:36,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 07:57:36,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 07:57:36,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 07:57:36,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 07:57:36,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 07:57:36,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 07:57:36,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 07:57:36,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-18 07:57:36,282 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 07:57:36,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 07:57:36,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 07:57:36,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 07:57:36,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 07:57:36,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 07:57:36,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 07:57:36,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 07:57:36,285 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 07:57:36,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 07:57:36,286 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 07:57:36,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 07:57:36,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 07:57:36,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 07:57:36,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 07:57:36,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 07:57:36,287 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 07:57:36,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 07:57:36,287 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 07:57:36,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 07:57:36,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 07:57:36,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 07:57:36,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 07:57:36,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:57:36,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 07:57:36,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 07:57:36,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 07:57:36,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 07:57:36,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 07:57:36,288 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 07:57:36,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 07:57:36,288 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 07:57:36,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 07:57:36,289 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 07:57:36,289 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d53423478efbe88c69a2c2de1bb984f61e7e586fd7bb6761452f26ace425f7 [2023-02-18 07:57:36,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 07:57:36,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 07:57:36,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 07:57:36,456 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 07:57:36,457 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 07:57:36,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c [2023-02-18 07:57:37,502 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 07:57:37,751 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 07:57:37,752 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c [2023-02-18 07:57:37,756 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ea39c27/c9606b84c9fd4c808cfc28e4db8b3c40/FLAG5e3c673e8 [2023-02-18 07:57:37,777 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ea39c27/c9606b84c9fd4c808cfc28e4db8b3c40 [2023-02-18 07:57:37,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 07:57:37,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 07:57:37,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 07:57:37,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 07:57:37,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 07:57:37,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3d6c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37, skipping insertion in model container [2023-02-18 07:57:37,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 07:57:37,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:57:37,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:57:37,932 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 07:57:37,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:57:37,948 INFO L208 MainTranslator]: Completed translation [2023-02-18 07:57:37,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37 WrapperNode [2023-02-18 07:57:37,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 07:57:37,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 07:57:37,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 07:57:37,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 07:57:37,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,971 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2023-02-18 07:57:37,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 07:57:37,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 07:57:37,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 07:57:37,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 07:57:37,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,981 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 07:57:37,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 07:57:37,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 07:57:37,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 07:57:37,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37" (1/1) ... [2023-02-18 07:57:37,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:57:37,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:57:38,004 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) [2023-02-18 07:57:38,023 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 [2023-02-18 07:57:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 07:57:38,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 07:57:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure mc91 [2023-02-18 07:57:38,041 INFO L138 BoogieDeclarations]: Found implementation of procedure mc91 [2023-02-18 07:57:38,074 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 07:57:38,076 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 07:57:38,168 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 07:57:38,174 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 07:57:38,174 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 07:57:38,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:57:38 BoogieIcfgContainer [2023-02-18 07:57:38,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 07:57:38,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 07:57:38,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 07:57:38,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 07:57:38,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:57:37" (1/3) ... [2023-02-18 07:57:38,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6ebda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:57:38, skipping insertion in model container [2023-02-18 07:57:38,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:37" (2/3) ... [2023-02-18 07:57:38,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6ebda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:57:38, skipping insertion in model container [2023-02-18 07:57:38,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:57:38" (3/3) ... [2023-02-18 07:57:38,184 INFO L112 eAbstractionObserver]: Analyzing ICFG McCarthy91_Recursion.c [2023-02-18 07:57:38,199 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 07:57:38,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-18 07:57:38,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 07:57:38,256 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3fc8488a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 07:57:38,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-18 07:57:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 07:57:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 07:57:38,264 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:38,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 07:57:38,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 07:57:38,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:38,270 INFO L85 PathProgramCache]: Analyzing trace with hash 890133490, now seen corresponding path program 1 times [2023-02-18 07:57:38,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:38,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638799795] [2023-02-18 07:57:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:38,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:57:38,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:38,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638799795] [2023-02-18 07:57:38,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638799795] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:38,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:38,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:57:38,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952188075] [2023-02-18 07:57:38,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:38,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:57:38,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:38,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:57:38,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:57:38,486 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:38,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:38,559 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2023-02-18 07:57:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:57:38,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 07:57:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:38,566 INFO L225 Difference]: With dead ends: 41 [2023-02-18 07:57:38,567 INFO L226 Difference]: Without dead ends: 36 [2023-02-18 07:57:38,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:57:38,571 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:38,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 45 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:57:38,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-18 07:57:38,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2023-02-18 07:57:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 24 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 07:57:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-02-18 07:57:38,597 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 6 [2023-02-18 07:57:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:38,598 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-02-18 07:57:38,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:38,598 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-02-18 07:57:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 07:57:38,598 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:38,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 07:57:38,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 07:57:38,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 07:57:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash 890133330, now seen corresponding path program 1 times [2023-02-18 07:57:38,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:38,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399125247] [2023-02-18 07:57:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:38,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:38,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:57:38,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:38,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399125247] [2023-02-18 07:57:38,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399125247] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:38,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:38,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:57:38,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924152382] [2023-02-18 07:57:38,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:38,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:57:38,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:38,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:57:38,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:57:38,616 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:38,632 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-02-18 07:57:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:57:38,633 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 07:57:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:38,634 INFO L225 Difference]: With dead ends: 35 [2023-02-18 07:57:38,634 INFO L226 Difference]: Without dead ends: 34 [2023-02-18 07:57:38,634 INFO L412 NwaCegarLoop]: 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 [2023-02-18 07:57:38,635 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:38,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 24 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:57:38,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-18 07:57:38,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2023-02-18 07:57:38,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 23 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 07:57:38,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-02-18 07:57:38,642 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 6 [2023-02-18 07:57:38,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:38,642 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-02-18 07:57:38,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:38,642 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-02-18 07:57:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 07:57:38,643 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:38,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:38,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 07:57:38,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 07:57:38,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:38,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1824334464, now seen corresponding path program 1 times [2023-02-18 07:57:38,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:38,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155137817] [2023-02-18 07:57:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:38,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:57:38,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:38,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155137817] [2023-02-18 07:57:38,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155137817] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:38,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:38,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:57:38,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486564002] [2023-02-18 07:57:38,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:38,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:57:38,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:38,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:57:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:57:38,665 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:38,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:38,681 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-18 07:57:38,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:57:38,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 07:57:38,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:38,683 INFO L225 Difference]: With dead ends: 34 [2023-02-18 07:57:38,683 INFO L226 Difference]: Without dead ends: 33 [2023-02-18 07:57:38,683 INFO L412 NwaCegarLoop]: 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 [2023-02-18 07:57:38,684 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:38,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:57:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-18 07:57:38,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2023-02-18 07:57:38,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 07:57:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-02-18 07:57:38,690 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 7 [2023-02-18 07:57:38,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:38,690 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-02-18 07:57:38,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:38,691 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-02-18 07:57:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 07:57:38,691 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:38,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:38,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 07:57:38,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 07:57:38,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:38,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1824329499, now seen corresponding path program 1 times [2023-02-18 07:57:38,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:38,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903339273] [2023-02-18 07:57:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:38,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:57:38,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:38,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903339273] [2023-02-18 07:57:38,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903339273] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:38,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:38,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:57:38,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470058026] [2023-02-18 07:57:38,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:38,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:57:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:38,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:57:38,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:57:38,722 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:38,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:38,769 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2023-02-18 07:57:38,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:57:38,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 07:57:38,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:38,771 INFO L225 Difference]: With dead ends: 46 [2023-02-18 07:57:38,771 INFO L226 Difference]: Without dead ends: 40 [2023-02-18 07:57:38,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:57:38,772 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:38,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 43 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:57:38,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-18 07:57:38,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2023-02-18 07:57:38,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 07:57:38,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2023-02-18 07:57:38,779 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 7 [2023-02-18 07:57:38,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:38,780 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2023-02-18 07:57:38,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2023-02-18 07:57:38,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 07:57:38,781 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:38,781 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:38,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 07:57:38,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 07:57:38,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:38,782 INFO L85 PathProgramCache]: Analyzing trace with hash -472406497, now seen corresponding path program 1 times [2023-02-18 07:57:38,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:38,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627715522] [2023-02-18 07:57:38,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:38,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:38,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:57:38,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:38,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627715522] [2023-02-18 07:57:38,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627715522] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:38,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:38,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:57:38,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916246805] [2023-02-18 07:57:38,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:38,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:57:38,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:38,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:57:38,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:57:38,813 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:38,869 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2023-02-18 07:57:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:57:38,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-18 07:57:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:38,871 INFO L225 Difference]: With dead ends: 56 [2023-02-18 07:57:38,871 INFO L226 Difference]: Without dead ends: 55 [2023-02-18 07:57:38,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-18 07:57:38,872 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:38,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 40 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:57:38,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-18 07:57:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2023-02-18 07:57:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 36 states have internal predecessors, (40), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 07:57:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2023-02-18 07:57:38,884 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 12 [2023-02-18 07:57:38,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:38,884 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2023-02-18 07:57:38,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2023-02-18 07:57:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 07:57:38,885 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:38,885 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:38,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 07:57:38,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 07:57:38,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:38,886 INFO L85 PathProgramCache]: Analyzing trace with hash -926723715, now seen corresponding path program 1 times [2023-02-18 07:57:38,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:38,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777515199] [2023-02-18 07:57:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:38,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 07:57:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:57:39,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:39,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777515199] [2023-02-18 07:57:39,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777515199] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:39,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:39,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 07:57:39,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235423183] [2023-02-18 07:57:39,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:39,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 07:57:39,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:39,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 07:57:39,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-18 07:57:39,011 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:57:39,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:39,119 INFO L93 Difference]: Finished difference Result 101 states and 130 transitions. [2023-02-18 07:57:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 07:57:39,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-02-18 07:57:39,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:39,126 INFO L225 Difference]: With dead ends: 101 [2023-02-18 07:57:39,126 INFO L226 Difference]: Without dead ends: 100 [2023-02-18 07:57:39,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-02-18 07:57:39,127 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:39,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 62 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:57:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-18 07:57:39,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 90. [2023-02-18 07:57:39,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 66 states have internal predecessors, (70), 19 states have call successors, (19), 6 states have call predecessors, (19), 8 states have return successors, (22), 17 states have call predecessors, (22), 16 states have call successors, (22) [2023-02-18 07:57:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 111 transitions. [2023-02-18 07:57:39,140 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 111 transitions. Word has length 19 [2023-02-18 07:57:39,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:39,141 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 111 transitions. [2023-02-18 07:57:39,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:57:39,141 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 111 transitions. [2023-02-18 07:57:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 07:57:39,141 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:39,141 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:39,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 07:57:39,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 07:57:39,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:39,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1336330992, now seen corresponding path program 1 times [2023-02-18 07:57:39,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:39,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26013090] [2023-02-18 07:57:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:39,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:39,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 07:57:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 07:57:39,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:39,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26013090] [2023-02-18 07:57:39,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26013090] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:57:39,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285338950] [2023-02-18 07:57:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:39,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:57:39,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:57:39,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:57:39,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 07:57:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:39,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 07:57:39,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:57:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:57:39,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:57:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:57:39,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285338950] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:57:39,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:57:39,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2023-02-18 07:57:39,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306051242] [2023-02-18 07:57:39,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:57:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-18 07:57:39,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:39,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-18 07:57:39,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-02-18 07:57:39,542 INFO L87 Difference]: Start difference. First operand 90 states and 111 transitions. Second operand has 23 states, 20 states have (on average 2.25) internal successors, (45), 18 states have internal predecessors, (45), 9 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 07:57:39,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:39,748 INFO L93 Difference]: Finished difference Result 99 states and 128 transitions. [2023-02-18 07:57:39,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-18 07:57:39,749 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.25) internal successors, (45), 18 states have internal predecessors, (45), 9 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2023-02-18 07:57:39,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:39,755 INFO L225 Difference]: With dead ends: 99 [2023-02-18 07:57:39,755 INFO L226 Difference]: Without dead ends: 98 [2023-02-18 07:57:39,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2023-02-18 07:57:39,758 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 93 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:39,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 49 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:57:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-18 07:57:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2023-02-18 07:57:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 65 states have internal predecessors, (68), 19 states have call successors, (19), 6 states have call predecessors, (19), 8 states have return successors, (22), 17 states have call predecessors, (22), 16 states have call successors, (22) [2023-02-18 07:57:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2023-02-18 07:57:39,772 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 20 [2023-02-18 07:57:39,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:39,772 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2023-02-18 07:57:39,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.25) internal successors, (45), 18 states have internal predecessors, (45), 9 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 07:57:39,773 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2023-02-18 07:57:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-18 07:57:39,774 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:39,774 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:39,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 07:57:39,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:57:39,979 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 07:57:39,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:39,980 INFO L85 PathProgramCache]: Analyzing trace with hash -5036456, now seen corresponding path program 1 times [2023-02-18 07:57:39,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:39,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452236652] [2023-02-18 07:57:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:39,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:40,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-18 07:57:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:57:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:40,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:57:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-18 07:57:40,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:40,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452236652] [2023-02-18 07:57:40,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452236652] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:40,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:40,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 07:57:40,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965530429] [2023-02-18 07:57:40,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:40,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 07:57:40,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:40,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 07:57:40,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-18 07:57:40,107 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 07:57:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:40,197 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2023-02-18 07:57:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 07:57:40,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2023-02-18 07:57:40,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:40,198 INFO L225 Difference]: With dead ends: 93 [2023-02-18 07:57:40,198 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 07:57:40,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-02-18 07:57:40,207 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:40,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 57 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:57:40,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 07:57:40,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 07:57:40,214 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) [2023-02-18 07:57:40,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 07:57:40,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2023-02-18 07:57:40,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:40,214 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 07:57:40,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 07:57:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 07:57:40,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 07:57:40,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-02-18 07:57:40,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-02-18 07:57:40,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-02-18 07:57:40,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-02-18 07:57:40,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 07:57:40,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 07:57:40,238 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 07:57:40,239 INFO L895 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648))) [2023-02-18 07:57:40,239 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 07:57:40,239 INFO L899 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2023-02-18 07:57:40,239 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2023-02-18 07:57:40,240 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 07:57:40,240 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 07:57:40,240 INFO L899 garLoopResultBuilder]: For program point mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2023-02-18 07:57:40,240 INFO L899 garLoopResultBuilder]: For program point mc91FINAL(lines 8 12) no Hoare annotation was computed. [2023-02-18 07:57:40,240 INFO L899 garLoopResultBuilder]: For program point mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2023-02-18 07:57:40,240 INFO L899 garLoopResultBuilder]: For program point mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2023-02-18 07:57:40,240 INFO L899 garLoopResultBuilder]: For program point mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2023-02-18 07:57:40,241 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2023-02-18 07:57:40,241 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 11) no Hoare annotation was computed. [2023-02-18 07:57:40,241 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2023-02-18 07:57:40,241 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 12) the Hoare annotation is: true [2023-02-18 07:57:40,241 INFO L899 garLoopResultBuilder]: For program point L10-1(line 10) no Hoare annotation was computed. [2023-02-18 07:57:40,242 INFO L895 garLoopResultBuilder]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse3 (= mc91_~n |mc91_#in~n|)) (.cse4 (<= mc91_~n 100)) (.cse6 (<= 0 (+ (- 91) mc91_~n))) (.cse7 (<= mc91_~n 2147483647)) (.cse8 (<= |mc91_#in~n| 101)) (.cse2 (<= 0 (+ (- 91) |mc91_#in~n|))) (.cse11 (<= |mc91_#in~n| 2147483647)) (.cse13 (<= 0 (+ |mc91_#in~n| 2147483648))) (.cse5 (<= |mc91_#in~n| 111))) (let ((.cse12 (<= 0 (+ mc91_~n 2147483648))) (.cse9 (not .cse5)) (.cse14 (not .cse13)) (.cse10 (not .cse11)) (.cse0 (not .cse2)) (.cse1 (and .cse2 .cse3 .cse4 .cse6 .cse7 .cse8))) (and (or .cse0 .cse1 (not (<= |mc91_#in~n| 2147483648))) (or .cse0 (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) .cse9 .cse10) (or (and .cse3 .cse11 .cse12 .cse4 .cse7 .cse8 .cse13) .cse14 .cse10) (or (and .cse3 .cse12 .cse4 .cse5 .cse7 .cse8 .cse13) .cse9 .cse14 .cse10) (or .cse0 .cse1 (not .cse8))))) [2023-02-18 07:57:40,242 INFO L899 garLoopResultBuilder]: For program point L10-2(line 10) no Hoare annotation was computed. [2023-02-18 07:57:40,242 INFO L899 garLoopResultBuilder]: For program point L11-3(line 11) no Hoare annotation was computed. [2023-02-18 07:57:40,244 INFO L895 garLoopResultBuilder]: At program point L11-4(line 11) the Hoare annotation is: (let ((.cse1 (<= |mc91_#in~n| 2147483647)) (.cse8 (<= 0 (+ |mc91_#in~n| 2147483648))) (.cse14 (<= |mc91_#in~n| 111)) (.cse9 (<= (+ (- 1) |mc91_#t~ret0|) 2147483647)) (.cse0 (= mc91_~n |mc91_#in~n|)) (.cse3 (<= mc91_~n 100)) (.cse15 (<= 0 (+ (- 91) mc91_~n))) (.cse4 (<= 0 (+ (- 91) |mc91_#t~ret0|))) (.cse5 (<= |mc91_#t~ret0| 101)) (.cse6 (<= mc91_~n 2147483647)) (.cse7 (<= |mc91_#in~n| 101)) (.cse13 (<= 0 (+ (- 91) |mc91_#in~n|)))) (let ((.cse12 (not .cse13)) (.cse17 (and .cse13 .cse0 .cse3 .cse15 .cse4 .cse5 .cse6 .cse7)) (.cse18 (and .cse13 .cse9 .cse0 .cse3 .cse15 .cse4 .cse6 .cse7)) (.cse2 (<= 0 (+ mc91_~n 2147483648))) (.cse16 (not .cse14)) (.cse10 (not .cse8)) (.cse11 (not .cse1))) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse9 .cse0 .cse1 .cse2 .cse3 .cse4 .cse6 .cse7 .cse8) .cse10 .cse11) (or .cse12 (and .cse13 .cse0 .cse3 .cse14 .cse15 .cse4 .cse5 .cse6 .cse7) (and .cse13 .cse9 .cse0 .cse3 .cse14 .cse15 .cse4 .cse6 .cse7) .cse16 .cse11) (or .cse12 (not .cse7) .cse17 .cse18) (or .cse12 .cse17 .cse18 (not (<= |mc91_#in~n| 2147483648))) (or (and .cse9 .cse0 .cse2 .cse3 .cse14 .cse4 .cse6 .cse7 .cse8) (and .cse0 .cse2 .cse3 .cse14 .cse4 .cse5 .cse6 .cse7 .cse8) .cse16 .cse10 .cse11)))) [2023-02-18 07:57:40,246 INFO L899 garLoopResultBuilder]: For program point L11-5(line 11) no Hoare annotation was computed. [2023-02-18 07:57:40,246 INFO L899 garLoopResultBuilder]: For program point mc91EXIT(lines 8 12) no Hoare annotation was computed. [2023-02-18 07:57:40,249 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:40,250 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 07:57:40,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 07:57:40 BoogieIcfgContainer [2023-02-18 07:57:40,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 07:57:40,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 07:57:40,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 07:57:40,256 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 07:57:40,256 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:57:38" (3/4) ... [2023-02-18 07:57:40,258 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 07:57:40,262 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure mc91 [2023-02-18 07:57:40,267 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-02-18 07:57:40,267 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-18 07:57:40,267 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 07:57:40,291 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 07:57:40,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 07:57:40,292 INFO L158 Benchmark]: Toolchain (without parser) took 2510.76ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 99.6MB in the beginning and 78.3MB in the end (delta: 21.4MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2023-02-18 07:57:40,292 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 136.3MB. Free memory was 82.6MB in the beginning and 82.5MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 07:57:40,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.88ms. Allocated memory is still 136.3MB. Free memory was 99.6MB in the beginning and 90.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 07:57:40,293 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.52ms. Allocated memory is still 136.3MB. Free memory was 90.7MB in the beginning and 89.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 07:57:40,293 INFO L158 Benchmark]: Boogie Preprocessor took 10.22ms. Allocated memory is still 136.3MB. Free memory was 89.5MB in the beginning and 88.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 07:57:40,293 INFO L158 Benchmark]: RCFGBuilder took 193.51ms. Allocated memory is still 136.3MB. Free memory was 88.3MB in the beginning and 80.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 07:57:40,293 INFO L158 Benchmark]: TraceAbstraction took 2077.19ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 79.2MB in the beginning and 80.4MB in the end (delta: -1.2MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2023-02-18 07:57:40,294 INFO L158 Benchmark]: Witness Printer took 35.81ms. Allocated memory is still 176.2MB. Free memory was 80.4MB in the beginning and 78.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 07:57:40,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 136.3MB. Free memory was 82.6MB in the beginning and 82.5MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.88ms. Allocated memory is still 136.3MB. Free memory was 99.6MB in the beginning and 90.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.52ms. Allocated memory is still 136.3MB. Free memory was 90.7MB in the beginning and 89.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.22ms. Allocated memory is still 136.3MB. Free memory was 89.5MB in the beginning and 88.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 193.51ms. Allocated memory is still 136.3MB. Free memory was 88.3MB in the beginning and 80.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2077.19ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 79.2MB in the beginning and 80.4MB in the end (delta: -1.2MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * Witness Printer took 35.81ms. Allocated memory is still 176.2MB. Free memory was 80.4MB in the beginning and 78.3MB 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: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: 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 2 procedures, 23 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 8, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 238 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 227 mSDsluCounter, 343 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 218 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 486 IncrementalHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 125 mSDtfsCounter, 486 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=6, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 43 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 58 PreInvPairs, 77 NumberOfFragments, 600 HoareAnnotationTreeSize, 58 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 4 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 93/107 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 RESULT: Ultimate proved your program to be correct! [2023-02-18 07:57:40,318 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