./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/EvenOdd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/recursive/EvenOdd01-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 09:06:16,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:06:16,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:06:16,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:06:16,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:06:16,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:06:16,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:06:16,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:06:16,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:06:16,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:06:16,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:06:16,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:06:16,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:06:16,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:06:16,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:06:16,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:06:16,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:06:16,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:06:16,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:06:16,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:06:16,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:06:16,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:06:16,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:06:16,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:06:16,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:06:16,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:06:16,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:06:16,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:06:16,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:06:16,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:06:16,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:06:16,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:06:16,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:06:16,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:06:16,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:06:16,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:06:16,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:06:16,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:06:16,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:06:16,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:06:16,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:06:16,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-02-17 09:06:16,229 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:06:16,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:06:16,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:06:16,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:06:16,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 09:06:16,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 09:06:16,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:06:16,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:06:16,232 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:06:16,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:06:16,232 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 09:06:16,232 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:06:16,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:06:16,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 09:06:16,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:06:16,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 09:06:16,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 09:06:16,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 09:06:16,233 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-17 09:06:16,233 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 09:06:16,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 09:06:16,234 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:06:16,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 09:06:16,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:06:16,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:06:16,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 09:06:16,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:06:16,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:06:16,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 09:06:16,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 09:06:16,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:06:16,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 09:06:16,235 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 09:06:16,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 09:06:16,236 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 09:06:16,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 09:06:16,236 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 09:06:16,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc [2023-02-17 09:06:16,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:06:16,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:06:16,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:06:16,594 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:06:16,594 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:06:16,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/EvenOdd01-1.c [2023-02-17 09:06:17,551 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:06:17,750 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:06:17,751 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd01-1.c [2023-02-17 09:06:17,755 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d1bd0a0/94ef9400c06a4ba8802f1b5da96ec21b/FLAG640ad3516 [2023-02-17 09:06:17,766 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d1bd0a0/94ef9400c06a4ba8802f1b5da96ec21b [2023-02-17 09:06:17,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:06:17,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:06:17,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:06:17,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:06:17,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:06:17,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:17,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4917fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17, skipping insertion in model container [2023-02-17 09:06:17,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:17,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:06:17,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:06:17,923 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd01-1.c[975,988] [2023-02-17 09:06:17,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:06:17,930 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:06:17,940 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd01-1.c[975,988] [2023-02-17 09:06:17,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:06:17,949 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:06:17,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17 WrapperNode [2023-02-17 09:06:17,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:06:17,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:06:17,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:06:17,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:06:17,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:17,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:17,969 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2023-02-17 09:06:17,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:06:17,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:06:17,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:06:17,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:06:17,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:17,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:17,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:17,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:17,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:17,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:17,983 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:17,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:17,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:06:17,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:06:17,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:06:17,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:06:17,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17" (1/1) ... [2023-02-17 09:06:18,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:06:18,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:06:18,025 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 09:06:18,036 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 09:06:18,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 09:06:18,056 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2023-02-17 09:06:18,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2023-02-17 09:06:18,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 09:06:18,056 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2023-02-17 09:06:18,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2023-02-17 09:06:18,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:06:18,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:06:18,097 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:06:18,099 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:06:18,249 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:06:18,253 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:06:18,253 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-17 09:06:18,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:06:18 BoogieIcfgContainer [2023-02-17 09:06:18,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:06:18,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 09:06:18,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 09:06:18,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 09:06:18,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 09:06:17" (1/3) ... [2023-02-17 09:06:18,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3125c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:06:18, skipping insertion in model container [2023-02-17 09:06:18,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:06:17" (2/3) ... [2023-02-17 09:06:18,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3125c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:06:18, skipping insertion in model container [2023-02-17 09:06:18,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:06:18" (3/3) ... [2023-02-17 09:06:18,260 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2023-02-17 09:06:18,289 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 09:06:18,289 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-17 09:06:18,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 09:06:18,362 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;@7c0d68ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 09:06:18,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-17 09:06:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 09:06:18,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 09:06:18,372 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:06:18,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:06:18,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:06:18,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:06:18,377 INFO L85 PathProgramCache]: Analyzing trace with hash -592993799, now seen corresponding path program 1 times [2023-02-17 09:06:18,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:06:18,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398046745] [2023-02-17 09:06:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:06:18,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:06:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:06:18,541 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 09:06:18,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:06:18,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398046745] [2023-02-17 09:06:18,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398046745] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:06:18,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:06:18,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:06:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078753036] [2023-02-17 09:06:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:06:18,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:06:18,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:06:18,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:06:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:06:18,570 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 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 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 09:06:18,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:06:18,662 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2023-02-17 09:06:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:06:18,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2023-02-17 09:06:18,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:06:18,669 INFO L225 Difference]: With dead ends: 51 [2023-02-17 09:06:18,670 INFO L226 Difference]: Without dead ends: 27 [2023-02-17 09:06:18,672 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 09:06:18,674 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:06:18,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 110 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:06:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-17 09:06:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2023-02-17 09:06:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2023-02-17 09:06:18,716 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2023-02-17 09:06:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:06:18,717 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2023-02-17 09:06:18,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 09:06:18,717 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2023-02-17 09:06:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 09:06:18,718 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:06:18,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:06:18,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 09:06:18,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:06:18,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:06:18,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1202938527, now seen corresponding path program 1 times [2023-02-17 09:06:18,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:06:18,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938749791] [2023-02-17 09:06:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:06:18,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:06:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:06:18,803 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 09:06:18,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:06:18,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938749791] [2023-02-17 09:06:18,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938749791] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:06:18,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:06:18,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:06:18,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022221057] [2023-02-17 09:06:18,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:06:18,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:06:18,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:06:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:06:18,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:06:18,809 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 09:06:18,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:06:18,847 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2023-02-17 09:06:18,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:06:18,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2023-02-17 09:06:18,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:06:18,849 INFO L225 Difference]: With dead ends: 27 [2023-02-17 09:06:18,849 INFO L226 Difference]: Without dead ends: 26 [2023-02-17 09:06:18,850 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 09:06:18,851 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:06:18,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 50 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:06:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-17 09:06:18,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2023-02-17 09:06:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:18,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2023-02-17 09:06:18,855 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 9 [2023-02-17 09:06:18,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:06:18,856 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2023-02-17 09:06:18,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 09:06:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2023-02-17 09:06:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 09:06:18,856 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:06:18,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:06:18,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 09:06:18,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:06:18,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:06:18,858 INFO L85 PathProgramCache]: Analyzing trace with hash 708932889, now seen corresponding path program 1 times [2023-02-17 09:06:18,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:06:18,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150786016] [2023-02-17 09:06:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:06:18,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:06:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:06:18,922 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 09:06:18,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:06:18,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150786016] [2023-02-17 09:06:18,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150786016] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:06:18,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:06:18,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 09:06:18,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291771983] [2023-02-17 09:06:18,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:06:18,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 09:06:18,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:06:18,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 09:06:18,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 09:06:18,925 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 09:06:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:06:18,974 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2023-02-17 09:06:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 09:06:18,975 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 14 [2023-02-17 09:06:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:06:18,976 INFO L225 Difference]: With dead ends: 34 [2023-02-17 09:06:18,976 INFO L226 Difference]: Without dead ends: 33 [2023-02-17 09:06:18,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-17 09:06:18,977 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:06:18,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 43 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:06:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-17 09:06:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2023-02-17 09:06:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 25 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2023-02-17 09:06:18,981 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 14 [2023-02-17 09:06:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:06:18,982 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2023-02-17 09:06:18,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 09:06:18,982 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2023-02-17 09:06:18,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 09:06:18,982 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:06:18,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:06:18,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 09:06:18,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:06:18,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:06:18,984 INFO L85 PathProgramCache]: Analyzing trace with hash 502083121, now seen corresponding path program 1 times [2023-02-17 09:06:18,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:06:18,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702947404] [2023-02-17 09:06:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:06:18,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:06:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:06:19,029 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 09:06:19,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:06:19,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702947404] [2023-02-17 09:06:19,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702947404] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:06:19,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:06:19,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 09:06:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864009422] [2023-02-17 09:06:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:06:19,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 09:06:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:06:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 09:06:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 09:06:19,039 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 09:06:19,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:06:19,092 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2023-02-17 09:06:19,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 09:06:19,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 15 [2023-02-17 09:06:19,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:06:19,093 INFO L225 Difference]: With dead ends: 30 [2023-02-17 09:06:19,093 INFO L226 Difference]: Without dead ends: 28 [2023-02-17 09:06:19,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-17 09:06:19,094 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:06:19,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:06:19,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-17 09:06:19,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-17 09:06:19,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2023-02-17 09:06:19,097 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15 [2023-02-17 09:06:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:06:19,098 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2023-02-17 09:06:19,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 09:06:19,098 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2023-02-17 09:06:19,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 09:06:19,098 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:06:19,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:06:19,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 09:06:19,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:06:19,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:06:19,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1700150087, now seen corresponding path program 1 times [2023-02-17 09:06:19,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:06:19,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766086074] [2023-02-17 09:06:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:06:19,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:06:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:06:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:19,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:06:19,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766086074] [2023-02-17 09:06:19,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766086074] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:06:19,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062817509] [2023-02-17 09:06:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:06:19,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:06:19,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:06:19,180 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 09:06:19,181 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 09:06:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:06:19,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 09:06:19,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:06:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:19,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:06:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:19,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062817509] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:06:19,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:06:19,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-17 09:06:19,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120538600] [2023-02-17 09:06:19,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:06:19,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 09:06:19,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:06:19,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 09:06:19,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-02-17 09:06:19,360 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:19,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:06:19,473 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2023-02-17 09:06:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 09:06:19,473 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-17 09:06:19,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:06:19,474 INFO L225 Difference]: With dead ends: 50 [2023-02-17 09:06:19,474 INFO L226 Difference]: Without dead ends: 48 [2023-02-17 09:06:19,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-02-17 09:06:19,475 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:06:19,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 46 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:06:19,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-17 09:06:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2023-02-17 09:06:19,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2023-02-17 09:06:19,489 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 20 [2023-02-17 09:06:19,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:06:19,489 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2023-02-17 09:06:19,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2023-02-17 09:06:19,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-17 09:06:19,490 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:06:19,490 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-17 09:06:19,508 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 09:06:19,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:06:19,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:06:19,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:06:19,696 INFO L85 PathProgramCache]: Analyzing trace with hash 662928821, now seen corresponding path program 1 times [2023-02-17 09:06:19,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:06:19,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851448253] [2023-02-17 09:06:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:06:19,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:06:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:06:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:19,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:06:19,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851448253] [2023-02-17 09:06:19,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851448253] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:06:19,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609792601] [2023-02-17 09:06:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:06:19,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:06:19,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:06:19,840 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:06:19,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 09:06:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:06:19,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 09:06:19,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:06:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:19,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:06:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:20,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609792601] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:06:20,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:06:20,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-02-17 09:06:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589419688] [2023-02-17 09:06:20,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:06:20,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-17 09:06:20,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:06:20,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-17 09:06:20,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-02-17 09:06:20,128 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:20,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:06:20,348 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2023-02-17 09:06:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-17 09:06:20,349 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-17 09:06:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:06:20,350 INFO L225 Difference]: With dead ends: 92 [2023-02-17 09:06:20,350 INFO L226 Difference]: Without dead ends: 90 [2023-02-17 09:06:20,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 52 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2023-02-17 09:06:20,351 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 165 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:06:20,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 44 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:06:20,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-17 09:06:20,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2023-02-17 09:06:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2023-02-17 09:06:20,358 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 38 [2023-02-17 09:06:20,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:06:20,358 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2023-02-17 09:06:20,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:20,358 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2023-02-17 09:06:20,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-17 09:06:20,360 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:06:20,360 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2023-02-17 09:06:20,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 09:06:20,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-17 09:06:20,566 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:06:20,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:06:20,567 INFO L85 PathProgramCache]: Analyzing trace with hash -175214899, now seen corresponding path program 2 times [2023-02-17 09:06:20,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:06:20,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29391934] [2023-02-17 09:06:20,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:06:20,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:06:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:06:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:20,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:06:20,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29391934] [2023-02-17 09:06:20,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29391934] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:06:20,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789909633] [2023-02-17 09:06:20,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:06:20,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:06:20,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:06:20,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:06:20,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 09:06:20,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:06:20,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:06:20,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-17 09:06:20,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:06:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:21,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:06:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:21,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789909633] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:06:21,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:06:21,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2023-02-17 09:06:21,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396843861] [2023-02-17 09:06:21,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:06:21,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-17 09:06:21,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:06:21,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-17 09:06:21,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2023-02-17 09:06:21,646 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:22,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:06:22,158 INFO L93 Difference]: Finished difference Result 170 states and 181 transitions. [2023-02-17 09:06:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-02-17 09:06:22,158 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-02-17 09:06:22,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:06:22,160 INFO L225 Difference]: With dead ends: 170 [2023-02-17 09:06:22,160 INFO L226 Difference]: Without dead ends: 168 [2023-02-17 09:06:22,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 108 SyntacticMatches, 24 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=970, Invalid=5510, Unknown=0, NotChecked=0, Total=6480 [2023-02-17 09:06:22,162 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 280 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:06:22,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 86 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 09:06:22,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-02-17 09:06:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2023-02-17 09:06:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 138 states have internal predecessors, (139), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:22,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2023-02-17 09:06:22,172 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 80 [2023-02-17 09:06:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:06:22,172 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2023-02-17 09:06:22,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:22,172 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2023-02-17 09:06:22,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-02-17 09:06:22,174 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:06:22,174 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2023-02-17 09:06:22,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 09:06:22,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:06:22,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:06:22,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:06:22,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1525318463, now seen corresponding path program 2 times [2023-02-17 09:06:22,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:06:22,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369356357] [2023-02-17 09:06:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:06:22,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:06:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:06:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:23,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:06:23,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369356357] [2023-02-17 09:06:23,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369356357] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:06:23,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884157970] [2023-02-17 09:06:23,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:06:23,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:06:23,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:06:23,672 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:06:23,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 09:06:23,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:06:23,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:06:23,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 54 conjunts are in the unsatisfiable core [2023-02-17 09:06:23,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:06:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:24,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:06:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:25,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884157970] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:06:25,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:06:25,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2023-02-17 09:06:25,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925295761] [2023-02-17 09:06:25,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:06:25,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2023-02-17 09:06:25,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:06:25,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2023-02-17 09:06:25,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2023-02-17 09:06:25,798 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand has 108 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 56 states have internal predecessors, (262), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:27,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:06:27,249 INFO L93 Difference]: Finished difference Result 332 states and 357 transitions. [2023-02-17 09:06:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-02-17 09:06:27,250 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 56 states have internal predecessors, (262), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2023-02-17 09:06:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:06:27,251 INFO L225 Difference]: With dead ends: 332 [2023-02-17 09:06:27,251 INFO L226 Difference]: Without dead ends: 330 [2023-02-17 09:06:27,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 212 SyntacticMatches, 50 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9640 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2023-02-17 09:06:27,256 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 970 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 09:06:27,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 88 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 09:06:27,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-02-17 09:06:27,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2023-02-17 09:06:27,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 272 states have (on average 1.0073529411764706) internal successors, (274), 273 states have internal predecessors, (274), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:27,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2023-02-17 09:06:27,289 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 158 [2023-02-17 09:06:27,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:06:27,290 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2023-02-17 09:06:27,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 56 states have internal predecessors, (262), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:27,291 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2023-02-17 09:06:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-02-17 09:06:27,298 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:06:27,299 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1] [2023-02-17 09:06:27,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 09:06:27,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:06:27,505 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:06:27,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:06:27,505 INFO L85 PathProgramCache]: Analyzing trace with hash 703683301, now seen corresponding path program 3 times [2023-02-17 09:06:27,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:06:27,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76907324] [2023-02-17 09:06:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:06:27,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:06:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:06:31,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:31,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:06:31,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76907324] [2023-02-17 09:06:31,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76907324] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:06:31,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436785967] [2023-02-17 09:06:31,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:06:31,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:06:31,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:06:31,197 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:06:31,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 09:06:31,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-02-17 09:06:31,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:06:31,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 108 conjunts are in the unsatisfiable core [2023-02-17 09:06:31,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:06:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:32,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:06:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:36,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436785967] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:06:36,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:06:36,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 108] total 215 [2023-02-17 09:06:36,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750638596] [2023-02-17 09:06:36,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:06:36,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2023-02-17 09:06:36,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:06:36,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2023-02-17 09:06:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5944, Invalid=40496, Unknown=0, NotChecked=0, Total=46440 [2023-02-17 09:06:36,260 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand has 216 states, 213 states have (on average 2.4976525821596245) internal successors, (532), 110 states have internal predecessors, (532), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:06:41,178 INFO L93 Difference]: Finished difference Result 650 states and 701 transitions. [2023-02-17 09:06:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2023-02-17 09:06:41,179 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 213 states have (on average 2.4976525821596245) internal successors, (532), 110 states have internal predecessors, (532), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2023-02-17 09:06:41,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:06:41,181 INFO L225 Difference]: With dead ends: 650 [2023-02-17 09:06:41,181 INFO L226 Difference]: Without dead ends: 648 [2023-02-17 09:06:41,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 428 SyntacticMatches, 104 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41651 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=14530, Invalid=88190, Unknown=0, NotChecked=0, Total=102720 [2023-02-17 09:06:41,187 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1505 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 09:06:41,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 119 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 09:06:41,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-02-17 09:06:41,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 646. [2023-02-17 09:06:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 537 states have (on average 1.0037243947858474) internal successors, (539), 538 states have internal predecessors, (539), 107 states have call successors, (107), 107 states have call predecessors, (107), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 646 transitions. [2023-02-17 09:06:41,243 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 646 transitions. Word has length 320 [2023-02-17 09:06:41,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:06:41,244 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 646 transitions. [2023-02-17 09:06:41,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 213 states have (on average 2.4976525821596245) internal successors, (532), 110 states have internal predecessors, (532), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:06:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 646 transitions. [2023-02-17 09:06:41,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-02-17 09:06:41,272 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:06:41,273 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 53, 52, 52, 52, 1, 1, 1, 1, 1] [2023-02-17 09:06:41,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 09:06:41,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:06:41,479 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:06:41,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:06:41,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1473253135, now seen corresponding path program 3 times [2023-02-17 09:06:41,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:06:41,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144438413] [2023-02-17 09:06:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:06:41,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:06:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:06:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:06:55,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:06:55,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144438413] [2023-02-17 09:06:55,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144438413] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:06:55,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494312757] [2023-02-17 09:06:55,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:06:55,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:06:55,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:06:55,672 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:06:55,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 09:06:55,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2023-02-17 09:06:55,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:06:55,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 214 conjunts are in the unsatisfiable core [2023-02-17 09:06:55,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:07:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:03,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:07:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:07:16,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494312757] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:07:16,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:07:16,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214, 214] total 427 [2023-02-17 09:07:16,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770955107] [2023-02-17 09:07:16,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:07:16,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 428 states [2023-02-17 09:07:16,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:07:16,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 428 interpolants. [2023-02-17 09:07:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23114, Invalid=159642, Unknown=0, NotChecked=0, Total=182756 [2023-02-17 09:07:16,665 INFO L87 Difference]: Start difference. First operand 646 states and 646 transitions. Second operand has 428 states, 425 states have (on average 2.498823529411765) internal successors, (1062), 216 states have internal predecessors, (1062), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:07:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:07:34,071 INFO L93 Difference]: Finished difference Result 1292 states and 1397 transitions. [2023-02-17 09:07:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 428 states. [2023-02-17 09:07:34,072 INFO L78 Accepts]: Start accepts. Automaton has has 428 states, 425 states have (on average 2.498823529411765) internal successors, (1062), 216 states have internal predecessors, (1062), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 638 [2023-02-17 09:07:34,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:07:34,075 INFO L225 Difference]: With dead ends: 1292 [2023-02-17 09:07:34,075 INFO L226 Difference]: Without dead ends: 1290 [2023-02-17 09:07:34,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1700 GetRequests, 852 SyntacticMatches, 210 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170680 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=57352, Invalid=351608, Unknown=0, NotChecked=0, Total=408960 [2023-02-17 09:07:34,091 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4445 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4445 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-17 09:07:34,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4445 Valid, 120 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-17 09:07:34,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2023-02-17 09:07:34,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1288. [2023-02-17 09:07:34,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1072 states have (on average 1.001865671641791) internal successors, (1074), 1073 states have internal predecessors, (1074), 214 states have call successors, (214), 214 states have call predecessors, (214), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:07:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1288 transitions. [2023-02-17 09:07:34,116 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1288 transitions. Word has length 638 [2023-02-17 09:07:34,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:07:34,117 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1288 transitions. [2023-02-17 09:07:34,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 428 states, 425 states have (on average 2.498823529411765) internal successors, (1062), 216 states have internal predecessors, (1062), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:07:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1288 transitions. [2023-02-17 09:07:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1281 [2023-02-17 09:07:34,146 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:07:34,147 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 106, 106, 106, 106, 106, 106, 106, 106, 106, 1, 1, 1, 1, 1] [2023-02-17 09:07:34,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-17 09:07:34,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:07:34,354 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:07:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:07:34,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1882123077, now seen corresponding path program 4 times [2023-02-17 09:07:34,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:07:34,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486707144] [2023-02-17 09:07:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:07:34,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:07:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:08:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 67204 backedges. 0 proven. 67204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:08:50,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:08:50,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486707144] [2023-02-17 09:08:50,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486707144] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:08:50,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063268064] [2023-02-17 09:08:50,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 09:08:50,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:08:50,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:08:50,529 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:08:50,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 09:08:50,777 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 09:08:50,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:08:50,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1920 conjuncts, 428 conjunts are in the unsatisfiable core [2023-02-17 09:08:50,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:09:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 67204 backedges. 0 proven. 67204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:09:14,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:10:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 67204 backedges. 0 proven. 67204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:10:07,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063268064] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:10:07,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:10:07,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [428, 428, 428] total 855 [2023-02-17 09:10:07,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863829070] [2023-02-17 09:10:07,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:10:07,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 856 states [2023-02-17 09:10:07,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:10:07,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 856 interpolants. [2023-02-17 09:10:07,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92024, Invalid=639856, Unknown=0, NotChecked=0, Total=731880 [2023-02-17 09:10:07,968 INFO L87 Difference]: Start difference. First operand 1288 states and 1288 transitions. Second operand has 856 states, 853 states have (on average 2.499413833528722) internal successors, (2132), 430 states have internal predecessors, (2132), 426 states have call successors, (426), 426 states have call predecessors, (426), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)