./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 574ddb4e 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-?-574ddb4 [2023-02-17 09:17:33,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:17:33,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:17:33,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:17:33,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:17:33,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:17:33,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:17:33,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:17:33,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:17:33,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:17:33,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:17:33,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:17:33,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:17:33,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:17:33,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:17:33,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:17:33,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:17:33,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:17:33,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:17:33,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:17:33,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:17:33,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:17:33,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:17:33,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:17:33,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:17:33,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:17:33,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:17:33,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:17:33,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:17:33,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:17:33,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:17:33,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:17:33,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:17:33,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:17:33,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:17:33,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:17:33,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:17:33,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:17:33,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:17:33,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:17:33,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:17:33,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-17 09:17:33,231 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:17:33,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:17:33,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:17:33,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:17:33,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 09:17:33,237 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 09:17:33,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:17:33,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:17:33,237 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:17:33,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:17:33,238 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:17:33,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:17:33,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:17:33,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 09:17:33,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 09:17:33,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 09:17:33,239 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-17 09:17:33,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 09:17:33,239 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:17:33,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 09:17:33,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:17:33,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:17:33,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 09:17:33,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:17:33,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:17:33,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 09:17:33,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 09:17:33,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:17:33,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 09:17:33,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 09:17:33,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 09:17:33,241 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 09:17:33,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 09:17:33,241 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 09:17:33,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d53423478efbe88c69a2c2de1bb984f61e7e586fd7bb6761452f26ace425f7 [2023-02-17 09:17:33,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:17:33,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:17:33,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:17:33,472 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:17:33,475 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:17:33,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c [2023-02-17 09:17:34,421 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:17:34,586 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:17:34,586 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c [2023-02-17 09:17:34,589 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324d833e6/7d042a2207014147a18542ab1efa0d78/FLAGe6ad95067 [2023-02-17 09:17:35,019 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324d833e6/7d042a2207014147a18542ab1efa0d78 [2023-02-17 09:17:35,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:17:35,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:17:35,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:17:35,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:17:35,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:17:35,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1045b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35, skipping insertion in model container [2023-02-17 09:17:35,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:17:35,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:17:35,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:17:35,119 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:17:35,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:17:35,133 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:17:35,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35 WrapperNode [2023-02-17 09:17:35,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:17:35,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:17:35,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:17:35,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:17:35,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,150 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2023-02-17 09:17:35,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:17:35,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:17:35,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:17:35,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:17:35,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:17:35,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:17:35,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:17:35,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:17:35,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35" (1/1) ... [2023-02-17 09:17:35,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:17:35,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:17:35,190 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) [2023-02-17 09:17:35,192 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 [2023-02-17 09:17:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:17:35,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:17:35,218 INFO L130 BoogieDeclarations]: Found specification of procedure mc91 [2023-02-17 09:17:35,218 INFO L138 BoogieDeclarations]: Found implementation of procedure mc91 [2023-02-17 09:17:35,251 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:17:35,252 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:17:35,304 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:17:35,309 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:17:35,309 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-17 09:17:35,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:17:35 BoogieIcfgContainer [2023-02-17 09:17:35,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:17:35,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 09:17:35,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 09:17:35,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 09:17:35,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 09:17:35" (1/3) ... [2023-02-17 09:17:35,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c9682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:17:35, skipping insertion in model container [2023-02-17 09:17:35,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:17:35" (2/3) ... [2023-02-17 09:17:35,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c9682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:17:35, skipping insertion in model container [2023-02-17 09:17:35,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:17:35" (3/3) ... [2023-02-17 09:17:35,316 INFO L112 eAbstractionObserver]: Analyzing ICFG McCarthy91_Recursion.c [2023-02-17 09:17:35,327 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 09:17:35,327 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-17 09:17:35,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 09:17:35,361 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;@3b168a65, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 09:17:35,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-17 09:17:35,364 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) [2023-02-17 09:17:35,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 09:17:35,368 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:17:35,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 09:17:35,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:17:35,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:17:35,375 INFO L85 PathProgramCache]: Analyzing trace with hash 890133490, now seen corresponding path program 1 times [2023-02-17 09:17:35,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:17:35,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700196171] [2023-02-17 09:17:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:17:35,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:17:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:17:35,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:17:35,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700196171] [2023-02-17 09:17:35,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700196171] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:17:35,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:17:35,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:17:35,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549416181] [2023-02-17 09:17:35,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:17:35,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:17:35,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:17:35,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:17:35,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:17:35,555 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) [2023-02-17 09:17:35,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:17:35,663 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2023-02-17 09:17:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:17:35,665 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 [2023-02-17 09:17:35,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:17:35,678 INFO L225 Difference]: With dead ends: 41 [2023-02-17 09:17:35,688 INFO L226 Difference]: Without dead ends: 36 [2023-02-17 09:17:35,691 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 [2023-02-17 09:17:35,693 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-02-17 09:17:35,693 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] [2023-02-17 09:17:35,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-17 09:17:35,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2023-02-17 09:17:35,740 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) [2023-02-17 09:17:35,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-02-17 09:17:35,743 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 6 [2023-02-17 09:17:35,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:17:35,743 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-02-17 09:17:35,744 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) [2023-02-17 09:17:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-02-17 09:17:35,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 09:17:35,745 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:17:35,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 09:17:35,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 09:17:35,746 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:17:35,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:17:35,747 INFO L85 PathProgramCache]: Analyzing trace with hash 890133330, now seen corresponding path program 1 times [2023-02-17 09:17:35,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:17:35,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587766632] [2023-02-17 09:17:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:17:35,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:17:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:17:35,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:17:35,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587766632] [2023-02-17 09:17:35,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587766632] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:17:35,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:17:35,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:17:35,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351613260] [2023-02-17 09:17:35,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:17:35,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:17:35,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:17:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:17:35,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:17:35,782 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) [2023-02-17 09:17:35,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:17:35,814 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-02-17 09:17:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:17:35,814 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 [2023-02-17 09:17:35,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:17:35,815 INFO L225 Difference]: With dead ends: 35 [2023-02-17 09:17:35,815 INFO L226 Difference]: Without dead ends: 34 [2023-02-17 09:17:35,816 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 [2023-02-17 09:17:35,818 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 [2023-02-17 09:17:35,818 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] [2023-02-17 09:17:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-17 09:17:35,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2023-02-17 09:17:35,825 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) [2023-02-17 09:17:35,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-02-17 09:17:35,826 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 6 [2023-02-17 09:17:35,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:17:35,826 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-02-17 09:17:35,827 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) [2023-02-17 09:17:35,827 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-02-17 09:17:35,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 09:17:35,827 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:17:35,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:17:35,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 09:17:35,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:17:35,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:17:35,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1824334464, now seen corresponding path program 1 times [2023-02-17 09:17:35,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:17:35,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817021467] [2023-02-17 09:17:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:17:35,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:17:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:17:35,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:17:35,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817021467] [2023-02-17 09:17:35,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817021467] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:17:35,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:17:35,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:17:35,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417297044] [2023-02-17 09:17:35,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:17:35,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:17:35,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:17:35,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:17:35,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:17:35,851 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) [2023-02-17 09:17:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:17:35,872 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-17 09:17:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:17:35,872 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 [2023-02-17 09:17:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:17:35,876 INFO L225 Difference]: With dead ends: 34 [2023-02-17 09:17:35,876 INFO L226 Difference]: Without dead ends: 33 [2023-02-17 09:17:35,877 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 [2023-02-17 09:17:35,877 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 [2023-02-17 09:17:35,878 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] [2023-02-17 09:17:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-17 09:17:35,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2023-02-17 09:17:35,883 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) [2023-02-17 09:17:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-02-17 09:17:35,884 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 7 [2023-02-17 09:17:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:17:35,884 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-02-17 09:17:35,885 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) [2023-02-17 09:17:35,885 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-02-17 09:17:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 09:17:35,885 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:17:35,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:17:35,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 09:17:35,886 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:17:35,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:17:35,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1824329499, now seen corresponding path program 1 times [2023-02-17 09:17:35,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:17:35,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796210011] [2023-02-17 09:17:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:17:35,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:17:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:17:35,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:17:35,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796210011] [2023-02-17 09:17:35,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796210011] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:17:35,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:17:35,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:17:35,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928334631] [2023-02-17 09:17:35,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:17:35,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:17:35,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:17:35,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:17:35,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:17:35,924 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) [2023-02-17 09:17:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:17:35,984 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2023-02-17 09:17:35,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:17:35,984 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 [2023-02-17 09:17:35,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:17:35,986 INFO L225 Difference]: With dead ends: 46 [2023-02-17 09:17:35,987 INFO L226 Difference]: Without dead ends: 40 [2023-02-17 09:17:35,987 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 [2023-02-17 09:17:35,989 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 [2023-02-17 09:17:35,990 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] [2023-02-17 09:17:35,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-17 09:17:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2023-02-17 09:17:35,995 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) [2023-02-17 09:17:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2023-02-17 09:17:35,996 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 7 [2023-02-17 09:17:35,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:17:35,997 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2023-02-17 09:17:35,997 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) [2023-02-17 09:17:35,997 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2023-02-17 09:17:35,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 09:17:35,997 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:17:35,998 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:17:35,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 09:17:35,998 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:17:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:17:35,999 INFO L85 PathProgramCache]: Analyzing trace with hash -472406497, now seen corresponding path program 1 times [2023-02-17 09:17:35,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:17:35,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116817207] [2023-02-17 09:17:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:17:35,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:17:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:36,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:17:36,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:17:36,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116817207] [2023-02-17 09:17:36,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116817207] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:17:36,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:17:36,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:17:36,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257330654] [2023-02-17 09:17:36,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:17:36,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:17:36,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:17:36,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:17:36,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:17:36,030 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) [2023-02-17 09:17:36,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:17:36,080 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2023-02-17 09:17:36,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:17:36,081 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 [2023-02-17 09:17:36,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:17:36,082 INFO L225 Difference]: With dead ends: 56 [2023-02-17 09:17:36,082 INFO L226 Difference]: Without dead ends: 55 [2023-02-17 09:17:36,082 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 [2023-02-17 09:17:36,083 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 [2023-02-17 09:17:36,083 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] [2023-02-17 09:17:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-17 09:17:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2023-02-17 09:17:36,092 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) [2023-02-17 09:17:36,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2023-02-17 09:17:36,093 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 12 [2023-02-17 09:17:36,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:17:36,094 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2023-02-17 09:17:36,094 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) [2023-02-17 09:17:36,094 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2023-02-17 09:17:36,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 09:17:36,095 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:17:36,095 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:17:36,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 09:17:36,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:17:36,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:17:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash -926723715, now seen corresponding path program 1 times [2023-02-17 09:17:36,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:17:36,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553259704] [2023-02-17 09:17:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:17:36,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:17:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-17 09:17:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 09:17:36,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:17:36,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553259704] [2023-02-17 09:17:36,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553259704] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:17:36,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:17:36,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 09:17:36,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764611260] [2023-02-17 09:17:36,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:17:36,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 09:17:36,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:17:36,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 09:17:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-17 09:17:36,164 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) [2023-02-17 09:17:36,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:17:36,233 INFO L93 Difference]: Finished difference Result 101 states and 130 transitions. [2023-02-17 09:17:36,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 09:17:36,233 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 [2023-02-17 09:17:36,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:17:36,234 INFO L225 Difference]: With dead ends: 101 [2023-02-17 09:17:36,234 INFO L226 Difference]: Without dead ends: 100 [2023-02-17 09:17:36,235 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 [2023-02-17 09:17:36,235 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, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:17:36,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 62 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:17:36,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-17 09:17:36,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 90. [2023-02-17 09:17:36,245 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) [2023-02-17 09:17:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 111 transitions. [2023-02-17 09:17:36,247 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 111 transitions. Word has length 19 [2023-02-17 09:17:36,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:17:36,248 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 111 transitions. [2023-02-17 09:17:36,248 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) [2023-02-17 09:17:36,248 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 111 transitions. [2023-02-17 09:17:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 09:17:36,249 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:17:36,249 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:17:36,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 09:17:36,249 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:17:36,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:17:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1336330992, now seen corresponding path program 1 times [2023-02-17 09:17:36,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:17:36,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849324652] [2023-02-17 09:17:36,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:17:36,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:17:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-17 09:17:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:36,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:17:36,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:17:36,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849324652] [2023-02-17 09:17:36,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849324652] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:17:36,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965718685] [2023-02-17 09:17:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:17:36,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:17:36,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:17:36,414 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) [2023-02-17 09:17:36,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 09:17:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:36,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 09:17:36,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:17:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:17:36,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:17:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:17:36,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965718685] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:17:36,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:17:36,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2023-02-17 09:17:36,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753762348] [2023-02-17 09:17:36,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:17:36,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-17 09:17:36,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:17:36,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-17 09:17:36,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-02-17 09:17:36,740 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) [2023-02-17 09:17:36,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:17:36,907 INFO L93 Difference]: Finished difference Result 99 states and 128 transitions. [2023-02-17 09:17:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-17 09:17:36,908 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 [2023-02-17 09:17:36,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:17:36,912 INFO L225 Difference]: With dead ends: 99 [2023-02-17 09:17:36,912 INFO L226 Difference]: Without dead ends: 98 [2023-02-17 09:17:36,912 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 [2023-02-17 09:17:36,914 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 [2023-02-17 09:17:36,914 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] [2023-02-17 09:17:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-17 09:17:36,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2023-02-17 09:17:36,924 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) [2023-02-17 09:17:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2023-02-17 09:17:36,925 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 20 [2023-02-17 09:17:36,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:17:36,926 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2023-02-17 09:17:36,926 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) [2023-02-17 09:17:36,926 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2023-02-17 09:17:36,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-17 09:17:36,927 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:17:36,927 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 09:17:36,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 09:17:37,131 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 [2023-02-17 09:17:37,132 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:17:37,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:17:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash -5036456, now seen corresponding path program 1 times [2023-02-17 09:17:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:17:37,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717790202] [2023-02-17 09:17:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:17:37,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:17:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:37,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-17 09:17:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:37,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 09:17:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:37,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 09:17:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:17:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-17 09:17:37,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:17:37,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717790202] [2023-02-17 09:17:37,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717790202] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:17:37,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:17:37,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 09:17:37,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093815211] [2023-02-17 09:17:37,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:17:37,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 09:17:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:17:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 09:17:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-17 09:17:37,250 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) [2023-02-17 09:17:37,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:17:37,322 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2023-02-17 09:17:37,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 09:17:37,323 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 [2023-02-17 09:17:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:17:37,323 INFO L225 Difference]: With dead ends: 93 [2023-02-17 09:17:37,323 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 09:17:37,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-02-17 09:17:37,328 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, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:17:37,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 57 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:17:37,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 09:17:37,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 09:17:37,332 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) [2023-02-17 09:17:37,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 09:17:37,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2023-02-17 09:17:37,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:17:37,332 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 09:17:37,333 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) [2023-02-17 09:17:37,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 09:17:37,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 09:17:37,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-02-17 09:17:37,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-02-17 09:17:37,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-02-17 09:17:37,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-02-17 09:17:37,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 09:17:37,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 09:17:37,346 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 09:17:37,346 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))) [2023-02-17 09:17:37,346 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 09:17:37,346 INFO L899 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2023-02-17 09:17:37,347 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2023-02-17 09:17:37,347 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 09:17:37,347 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 09:17:37,347 INFO L899 garLoopResultBuilder]: For program point mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2023-02-17 09:17:37,347 INFO L899 garLoopResultBuilder]: For program point mc91FINAL(lines 8 12) no Hoare annotation was computed. [2023-02-17 09:17:37,347 INFO L899 garLoopResultBuilder]: For program point mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2023-02-17 09:17:37,347 INFO L899 garLoopResultBuilder]: For program point mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2023-02-17 09:17:37,347 INFO L899 garLoopResultBuilder]: For program point mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2023-02-17 09:17:37,347 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2023-02-17 09:17:37,348 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 11) no Hoare annotation was computed. [2023-02-17 09:17:37,348 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2023-02-17 09:17:37,348 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 12) the Hoare annotation is: true [2023-02-17 09:17:37,348 INFO L899 garLoopResultBuilder]: For program point L10-1(line 10) no Hoare annotation was computed. [2023-02-17 09:17:37,349 INFO L895 garLoopResultBuilder]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse14 (<= |mc91_#in~n| 2147483647)) (.cse4 (<= |mc91_#in~n| 111)) (.cse13 (<= 0 (+ |mc91_#in~n| 2147483648))) (.cse0 (= |mc91_#in~n| mc91_~n)) (.cse1 (<= mc91_~n 2147483647)) (.cse2 (<= |mc91_#in~n| 101)) (.cse3 (<= 0 (+ mc91_~n (- 91)))) (.cse5 (<= 0 (+ |mc91_#in~n| (- 91)))) (.cse6 (<= mc91_~n 100))) (let ((.cse10 (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse6)) (.cse8 (not .cse5)) (.cse11 (not .cse13)) (.cse12 (<= 0 (+ mc91_~n 2147483648))) (.cse7 (not .cse4)) (.cse9 (not .cse14))) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) .cse7 .cse8 .cse9) (or .cse10 (not .cse2) .cse8) (or .cse11 (and .cse0 .cse1 .cse2 .cse12 .cse13 .cse14 .cse6) .cse9) (or (not (<= |mc91_#in~n| 2147483648)) .cse10 .cse8) (or .cse11 (and .cse0 .cse1 .cse2 .cse4 .cse12 .cse13 .cse6) .cse7 .cse9)))) [2023-02-17 09:17:37,349 INFO L899 garLoopResultBuilder]: For program point L10-2(line 10) no Hoare annotation was computed. [2023-02-17 09:17:37,349 INFO L899 garLoopResultBuilder]: For program point L11-3(line 11) no Hoare annotation was computed. [2023-02-17 09:17:37,349 INFO L895 garLoopResultBuilder]: At program point L11-4(line 11) the Hoare annotation is: (let ((.cse7 (<= |mc91_#in~n| 2147483647)) (.cse16 (<= |mc91_#in~n| 111)) (.cse6 (<= 0 (+ |mc91_#in~n| 2147483648))) (.cse4 (<= (+ |mc91_#t~ret0| (- 1)) 2147483647)) (.cse1 (= |mc91_#in~n| mc91_~n)) (.cse10 (<= |mc91_#t~ret0| 101)) (.cse2 (<= mc91_~n 2147483647)) (.cse3 (<= |mc91_#in~n| 101)) (.cse15 (<= 0 (+ mc91_~n (- 91)))) (.cse17 (<= 0 (+ |mc91_#in~n| (- 91)))) (.cse8 (<= 0 (+ |mc91_#t~ret0| (- 91)))) (.cse9 (<= mc91_~n 100))) (let ((.cse12 (and .cse1 .cse10 .cse2 .cse3 .cse15 .cse17 .cse8 .cse9)) (.cse13 (and .cse1 .cse2 .cse3 .cse4 .cse15 .cse17 .cse8 .cse9)) (.cse14 (not .cse17)) (.cse0 (not .cse6)) (.cse5 (<= 0 (+ mc91_~n 2147483648))) (.cse18 (not .cse16)) (.cse11 (not .cse7))) (and (or .cse0 (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse1 .cse10 .cse2 .cse3 .cse5 .cse6 .cse7 .cse8 .cse9) .cse11) (or (not (<= |mc91_#in~n| 2147483648)) .cse12 .cse13 .cse14) (or (and .cse1 .cse2 .cse3 .cse4 .cse15 .cse16 .cse17 .cse8 .cse9) .cse18 .cse14 (and .cse1 .cse10 .cse2 .cse3 .cse15 .cse16 .cse17 .cse8 .cse9) .cse11) (or .cse12 (not .cse3) .cse13 .cse14) (or (and .cse1 .cse2 .cse3 .cse4 .cse16 .cse5 .cse6 .cse8 .cse9) .cse0 (and .cse1 .cse10 .cse2 .cse3 .cse16 .cse5 .cse6 .cse8 .cse9) .cse18 .cse11)))) [2023-02-17 09:17:37,349 INFO L899 garLoopResultBuilder]: For program point L11-5(line 11) no Hoare annotation was computed. [2023-02-17 09:17:37,349 INFO L899 garLoopResultBuilder]: For program point mc91EXIT(lines 8 12) no Hoare annotation was computed. [2023-02-17 09:17:37,352 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:17:37,353 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 09:17:37,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 09:17:37 BoogieIcfgContainer [2023-02-17 09:17:37,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 09:17:37,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 09:17:37,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 09:17:37,359 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 09:17:37,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:17:35" (3/4) ... [2023-02-17 09:17:37,361 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 09:17:37,366 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure mc91 [2023-02-17 09:17:37,370 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-02-17 09:17:37,371 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-17 09:17:37,371 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 09:17:37,391 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 09:17:37,392 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 09:17:37,392 INFO L158 Benchmark]: Toolchain (without parser) took 2368.50ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 86.6MB in the beginning and 77.5MB in the end (delta: 9.1MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2023-02-17 09:17:37,393 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory was 96.8MB in the beginning and 96.8MB in the end (delta: 18.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:17:37,393 INFO L158 Benchmark]: CACSL2BoogieTranslator took 109.90ms. Allocated memory is still 121.6MB. Free memory was 86.6MB in the beginning and 77.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 09:17:37,393 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.23ms. Allocated memory is still 121.6MB. Free memory was 77.8MB in the beginning and 76.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:17:37,394 INFO L158 Benchmark]: Boogie Preprocessor took 9.07ms. Allocated memory is still 121.6MB. Free memory was 76.3MB in the beginning and 75.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:17:37,394 INFO L158 Benchmark]: RCFGBuilder took 149.57ms. Allocated memory is still 121.6MB. Free memory was 75.2MB in the beginning and 66.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 09:17:37,394 INFO L158 Benchmark]: TraceAbstraction took 2046.81ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 65.8MB in the beginning and 79.6MB in the end (delta: -13.8MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2023-02-17 09:17:37,394 INFO L158 Benchmark]: Witness Printer took 32.67ms. Allocated memory is still 153.1MB. Free memory was 79.6MB in the beginning and 77.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:17:37,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory was 96.8MB in the beginning and 96.8MB in the end (delta: 18.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 109.90ms. Allocated memory is still 121.6MB. Free memory was 86.6MB in the beginning and 77.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.23ms. Allocated memory is still 121.6MB. Free memory was 77.8MB in the beginning and 76.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 9.07ms. Allocated memory is still 121.6MB. Free memory was 76.3MB in the beginning and 75.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 149.57ms. Allocated memory is still 121.6MB. Free memory was 75.2MB in the beginning and 66.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2046.81ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 65.8MB in the beginning and 79.6MB in the end (delta: -13.8MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Witness Printer took 32.67ms. Allocated memory is still 153.1MB. Free memory was 79.6MB in the beginning and 77.5MB 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, 0.0s 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! [2023-02-17 09:17:37,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE