./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/EvenOdd03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3dbbec33 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/EvenOdd03.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 eda92234de2991558d0fa68c10405194bf8879d4d71f81bbe5c79bf2cf318fe2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 14:07:38,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 14:07:38,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 14:07:38,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 14:07:38,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 14:07:38,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 14:07:38,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 14:07:38,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 14:07:38,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 14:07:38,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 14:07:38,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 14:07:38,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 14:07:38,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 14:07:38,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 14:07:38,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 14:07:38,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 14:07:38,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 14:07:38,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 14:07:38,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 14:07:38,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 14:07:38,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 14:07:38,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 14:07:38,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 14:07:38,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 14:07:38,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 14:07:38,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 14:07:38,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 14:07:38,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 14:07:38,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 14:07:38,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 14:07:38,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 14:07:38,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 14:07:38,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 14:07:38,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 14:07:38,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 14:07:38,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 14:07:38,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 14:07:38,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 14:07:38,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 14:07:38,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 14:07:38,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 14:07:38,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-02-14 14:07:38,428 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 14:07:38,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 14:07:38,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 14:07:38,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 14:07:38,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 14:07:38,430 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 14:07:38,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 14:07:38,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 14:07:38,431 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 14:07:38,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 14:07:38,432 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 14:07:38,432 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 14:07:38,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 14:07:38,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 14:07:38,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 14:07:38,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 14:07:38,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 14:07:38,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 14:07:38,433 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-14 14:07:38,433 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 14:07:38,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 14:07:38,433 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 14:07:38,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 14:07:38,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 14:07:38,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 14:07:38,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 14:07:38,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 14:07:38,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 14:07:38,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 14:07:38,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 14:07:38,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 14:07:38,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 14:07:38,435 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 14:07:38,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 14:07:38,435 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 14:07:38,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 14:07:38,436 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 14:07:38,436 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eda92234de2991558d0fa68c10405194bf8879d4d71f81bbe5c79bf2cf318fe2 [2023-02-14 14:07:38,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 14:07:38,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 14:07:38,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 14:07:38,633 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 14:07:38,633 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 14:07:38,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/EvenOdd03.c [2023-02-14 14:07:39,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 14:07:39,783 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 14:07:39,783 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd03.c [2023-02-14 14:07:39,787 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19637592/7e4ffd9111e840eeafce663906b3e8db/FLAG8b41f138f [2023-02-14 14:07:39,799 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19637592/7e4ffd9111e840eeafce663906b3e8db [2023-02-14 14:07:39,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 14:07:39,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 14:07:39,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 14:07:39,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 14:07:39,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 14:07:39,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@daf5a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39, skipping insertion in model container [2023-02-14 14:07:39,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 14:07:39,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 14:07:39,931 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/EvenOdd03.c[974,987] [2023-02-14 14:07:39,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:07:39,938 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 14:07:39,948 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/EvenOdd03.c[974,987] [2023-02-14 14:07:39,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:07:39,956 INFO L208 MainTranslator]: Completed translation [2023-02-14 14:07:39,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39 WrapperNode [2023-02-14 14:07:39,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 14:07:39,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 14:07:39,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 14:07:39,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 14:07:39,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,976 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2023-02-14 14:07:39,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 14:07:39,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 14:07:39,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 14:07:39,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 14:07:39,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,987 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 14:07:39,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 14:07:39,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 14:07:39,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 14:07:39,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39" (1/1) ... [2023-02-14 14:07:39,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 14:07:40,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:07:40,013 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) [2023-02-14 14:07:40,027 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 [2023-02-14 14:07:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 14:07:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2023-02-14 14:07:40,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2023-02-14 14:07:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 14:07:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2023-02-14 14:07:40,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2023-02-14 14:07:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 14:07:40,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 14:07:40,088 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 14:07:40,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 14:07:40,240 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 14:07:40,244 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 14:07:40,245 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-14 14:07:40,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:07:40 BoogieIcfgContainer [2023-02-14 14:07:40,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 14:07:40,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 14:07:40,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 14:07:40,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 14:07:40,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 02:07:39" (1/3) ... [2023-02-14 14:07:40,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ac2da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:07:40, skipping insertion in model container [2023-02-14 14:07:40,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:07:39" (2/3) ... [2023-02-14 14:07:40,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ac2da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:07:40, skipping insertion in model container [2023-02-14 14:07:40,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:07:40" (3/3) ... [2023-02-14 14:07:40,268 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd03.c [2023-02-14 14:07:40,280 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 14:07:40,281 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-14 14:07:40,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 14:07:40,350 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;@156a9bc7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 14:07:40,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-14 14:07:40,354 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) [2023-02-14 14:07:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 14:07:40,360 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:07:40,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:07:40,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-14 14:07:40,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:07:40,365 INFO L85 PathProgramCache]: Analyzing trace with hash -593486343, now seen corresponding path program 1 times [2023-02-14 14:07:40,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:07:40,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015435624] [2023-02-14 14:07:40,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:07:40,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:07:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:07:40,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:40,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:07:40,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015435624] [2023-02-14 14:07:40,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015435624] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:07:40,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:07:40,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:07:40,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435653087] [2023-02-14 14:07:40,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:07:40,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:07:40,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:07:40,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:07:40,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:07:40,540 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) [2023-02-14 14:07:40,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:07:40,614 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2023-02-14 14:07:40,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 14:07:40,615 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 [2023-02-14 14:07:40,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:07:40,623 INFO L225 Difference]: With dead ends: 51 [2023-02-14 14:07:40,625 INFO L226 Difference]: Without dead ends: 27 [2023-02-14 14:07:40,629 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 [2023-02-14 14:07:40,631 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, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:07:40,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 110 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:07:40,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-14 14:07:40,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2023-02-14 14:07:40,655 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) [2023-02-14 14:07:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2023-02-14 14:07:40,656 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2023-02-14 14:07:40,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:07:40,657 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2023-02-14 14:07:40,657 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) [2023-02-14 14:07:40,657 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2023-02-14 14:07:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-14 14:07:40,658 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:07:40,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:07:40,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 14:07:40,658 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-14 14:07:40,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:07:40,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1218207407, now seen corresponding path program 1 times [2023-02-14 14:07:40,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:07:40,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329243043] [2023-02-14 14:07:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:07:40,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:07:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:07:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:40,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:07:40,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329243043] [2023-02-14 14:07:40,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329243043] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:07:40,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:07:40,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:07:40,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647894500] [2023-02-14 14:07:40,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:07:40,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:07:40,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:07:40,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:07:40,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:07:40,752 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) [2023-02-14 14:07:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:07:40,810 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2023-02-14 14:07:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 14:07:40,810 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 [2023-02-14 14:07:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:07:40,811 INFO L225 Difference]: With dead ends: 27 [2023-02-14 14:07:40,811 INFO L226 Difference]: Without dead ends: 26 [2023-02-14 14:07:40,811 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 [2023-02-14 14:07:40,812 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 [2023-02-14 14:07:40,813 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] [2023-02-14 14:07:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-14 14:07:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2023-02-14 14:07:40,815 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) [2023-02-14 14:07:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2023-02-14 14:07:40,816 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 9 [2023-02-14 14:07:40,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:07:40,816 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2023-02-14 14:07:40,816 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) [2023-02-14 14:07:40,817 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2023-02-14 14:07:40,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 14:07:40,817 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:07:40,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:07:40,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 14:07:40,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-14 14:07:40,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:07:40,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1182090201, now seen corresponding path program 1 times [2023-02-14 14:07:40,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:07:40,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607770793] [2023-02-14 14:07:40,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:07:40,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:07:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:07:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:40,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:07:40,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607770793] [2023-02-14 14:07:40,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607770793] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:07:40,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:07:40,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 14:07:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724327594] [2023-02-14 14:07:40,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:07:40,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 14:07:40,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:07:40,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 14:07:40,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-14 14:07:40,908 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) [2023-02-14 14:07:40,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:07:40,998 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2023-02-14 14:07:40,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 14:07:40,999 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 [2023-02-14 14:07:40,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:07:41,000 INFO L225 Difference]: With dead ends: 34 [2023-02-14 14:07:41,000 INFO L226 Difference]: Without dead ends: 33 [2023-02-14 14:07:41,000 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 [2023-02-14 14:07:41,001 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 14:07:41,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 43 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 14:07:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-14 14:07:41,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2023-02-14 14:07:41,005 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) [2023-02-14 14:07:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2023-02-14 14:07:41,005 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 14 [2023-02-14 14:07:41,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:07:41,006 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2023-02-14 14:07:41,006 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) [2023-02-14 14:07:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2023-02-14 14:07:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 14:07:41,007 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:07:41,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:07:41,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 14:07:41,007 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-14 14:07:41,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:07:41,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2009909491, now seen corresponding path program 1 times [2023-02-14 14:07:41,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:07:41,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86859780] [2023-02-14 14:07:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:07:41,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:07:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:07:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:41,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:07:41,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86859780] [2023-02-14 14:07:41,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86859780] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:07:41,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:07:41,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 14:07:41,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599945397] [2023-02-14 14:07:41,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:07:41,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 14:07:41,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:07:41,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 14:07:41,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-14 14:07:41,077 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) [2023-02-14 14:07:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:07:41,121 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2023-02-14 14:07:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 14:07:41,122 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 [2023-02-14 14:07:41,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:07:41,122 INFO L225 Difference]: With dead ends: 30 [2023-02-14 14:07:41,122 INFO L226 Difference]: Without dead ends: 28 [2023-02-14 14:07:41,123 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 [2023-02-14 14:07:41,123 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 [2023-02-14 14:07:41,124 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] [2023-02-14 14:07:41,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-14 14:07:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-14 14:07:41,127 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) [2023-02-14 14:07:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2023-02-14 14:07:41,128 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15 [2023-02-14 14:07:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:07:41,128 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2023-02-14 14:07:41,128 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) [2023-02-14 14:07:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2023-02-14 14:07:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 14:07:41,129 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:07:41,129 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:07:41,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 14:07:41,129 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-14 14:07:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:07:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1950856391, now seen corresponding path program 1 times [2023-02-14 14:07:41,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:07:41,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056776721] [2023-02-14 14:07:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:07:41,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:07:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:07:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:41,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:07:41,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056776721] [2023-02-14 14:07:41,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056776721] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:07:41,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457820684] [2023-02-14 14:07:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:07:41,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:07:41,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:07:41,215 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) [2023-02-14 14:07:41,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 14:07:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:07:41,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 14:07:41,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:07:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:41,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:07:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:41,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457820684] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:07:41,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:07:41,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-14 14:07:41,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394512426] [2023-02-14 14:07:41,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:07:41,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-14 14:07:41,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:07:41,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-14 14:07:41,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-02-14 14:07:41,505 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) [2023-02-14 14:07:41,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:07:41,602 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2023-02-14 14:07:41,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-14 14:07:41,602 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 [2023-02-14 14:07:41,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:07:41,603 INFO L225 Difference]: With dead ends: 50 [2023-02-14 14:07:41,603 INFO L226 Difference]: Without dead ends: 48 [2023-02-14 14:07:41,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-02-14 14:07:41,605 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 [2023-02-14 14:07:41,605 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] [2023-02-14 14:07:41,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-14 14:07:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2023-02-14 14:07:41,609 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) [2023-02-14 14:07:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2023-02-14 14:07:41,610 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 20 [2023-02-14 14:07:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:07:41,610 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2023-02-14 14:07:41,611 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) [2023-02-14 14:07:41,611 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2023-02-14 14:07:41,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-14 14:07:41,611 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:07:41,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-14 14:07:41,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-14 14:07:41,816 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 [2023-02-14 14:07:41,817 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-14 14:07:41,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:07:41,818 INFO L85 PathProgramCache]: Analyzing trace with hash 540426179, now seen corresponding path program 1 times [2023-02-14 14:07:41,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:07:41,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269604162] [2023-02-14 14:07:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:07:41,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:07:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:07:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:42,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:07:42,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269604162] [2023-02-14 14:07:42,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269604162] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:07:42,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695735465] [2023-02-14 14:07:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:07:42,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:07:42,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:07:42,064 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) [2023-02-14 14:07:42,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 14:07:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:07:42,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 14:07:42,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:07:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:42,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:07:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:42,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695735465] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:07:42,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:07:42,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-02-14 14:07:42,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633422578] [2023-02-14 14:07:42,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:07:42,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-14 14:07:42,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:07:42,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-14 14:07:42,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-02-14 14:07:42,404 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) [2023-02-14 14:07:42,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:07:42,634 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2023-02-14 14:07:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-14 14:07:42,635 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 [2023-02-14 14:07:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:07:42,636 INFO L225 Difference]: With dead ends: 92 [2023-02-14 14:07:42,636 INFO L226 Difference]: Without dead ends: 90 [2023-02-14 14:07:42,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2023-02-14 14:07:42,638 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 [2023-02-14 14:07:42,638 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] [2023-02-14 14:07:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-14 14:07:42,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2023-02-14 14:07:42,661 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) [2023-02-14 14:07:42,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2023-02-14 14:07:42,661 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 38 [2023-02-14 14:07:42,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:07:42,662 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2023-02-14 14:07:42,662 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) [2023-02-14 14:07:42,662 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2023-02-14 14:07:42,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-14 14:07:42,664 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:07:42,664 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2023-02-14 14:07:42,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 14:07:42,868 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 [2023-02-14 14:07:42,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-14 14:07:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:07:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1122573261, now seen corresponding path program 2 times [2023-02-14 14:07:42,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:07:42,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440444040] [2023-02-14 14:07:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:07:42,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:07:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:07:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:43,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:07:43,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440444040] [2023-02-14 14:07:43,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440444040] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:07:43,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668599682] [2023-02-14 14:07:43,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 14:07:43,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:07:43,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:07:43,301 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) [2023-02-14 14:07:43,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 14:07:43,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 14:07:43,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:07:43,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-14 14:07:43,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:07:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:43,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:07:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:44,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668599682] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:07:44,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:07:44,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2023-02-14 14:07:44,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541106442] [2023-02-14 14:07:44,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:07:44,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-14 14:07:44,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:07:44,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-14 14:07:44,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2023-02-14 14:07:44,017 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) [2023-02-14 14:07:44,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:07:44,567 INFO L93 Difference]: Finished difference Result 170 states and 181 transitions. [2023-02-14 14:07:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-02-14 14:07:44,567 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 [2023-02-14 14:07:44,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:07:44,569 INFO L225 Difference]: With dead ends: 170 [2023-02-14 14:07:44,569 INFO L226 Difference]: Without dead ends: 168 [2023-02-14 14:07:44,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=970, Invalid=5510, Unknown=0, NotChecked=0, Total=6480 [2023-02-14 14:07:44,571 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 280 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-02-14 14:07:44,572 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] [2023-02-14 14:07:44,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-02-14 14:07:44,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2023-02-14 14:07:44,582 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) [2023-02-14 14:07:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2023-02-14 14:07:44,583 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 80 [2023-02-14 14:07:44,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:07:44,584 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2023-02-14 14:07:44,584 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) [2023-02-14 14:07:44,584 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2023-02-14 14:07:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-02-14 14:07:44,585 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:07:44,585 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2023-02-14 14:07:44,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-14 14:07:44,790 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 [2023-02-14 14:07:44,791 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-14 14:07:44,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:07:44,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2127078863, now seen corresponding path program 2 times [2023-02-14 14:07:44,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:07:44,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048263971] [2023-02-14 14:07:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:07:44,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:07:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:07:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:46,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:07:46,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048263971] [2023-02-14 14:07:46,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048263971] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:07:46,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021338200] [2023-02-14 14:07:46,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 14:07:46,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:07:46,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:07:46,180 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) [2023-02-14 14:07:46,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 14:07:46,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 14:07:46,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:07:46,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 54 conjunts are in the unsatisfiable core [2023-02-14 14:07:46,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:07:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:46,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:07:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:48,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021338200] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:07:48,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:07:48,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2023-02-14 14:07:48,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415422649] [2023-02-14 14:07:48,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:07:48,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2023-02-14 14:07:48,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:07:48,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2023-02-14 14:07:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2023-02-14 14:07:48,039 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) [2023-02-14 14:07:49,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:07:49,663 INFO L93 Difference]: Finished difference Result 332 states and 357 transitions. [2023-02-14 14:07:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-02-14 14:07:49,664 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 [2023-02-14 14:07:49,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:07:49,665 INFO L225 Difference]: With dead ends: 332 [2023-02-14 14:07:49,666 INFO L226 Difference]: Without dead ends: 330 [2023-02-14 14:07:49,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2023-02-14 14:07:49,671 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 [2023-02-14 14:07:49,671 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] [2023-02-14 14:07:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-02-14 14:07:49,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2023-02-14 14:07:49,704 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) [2023-02-14 14:07:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2023-02-14 14:07:49,706 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 158 [2023-02-14 14:07:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:07:49,707 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2023-02-14 14:07:49,707 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) [2023-02-14 14:07:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2023-02-14 14:07:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-02-14 14:07:49,713 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:07:49,713 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1] [2023-02-14 14:07:49,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-14 14:07:49,914 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 [2023-02-14 14:07:49,914 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-14 14:07:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:07:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1888638437, now seen corresponding path program 3 times [2023-02-14 14:07:49,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:07:49,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365946916] [2023-02-14 14:07:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:07:49,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:07:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:07:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:54,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:07:54,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365946916] [2023-02-14 14:07:54,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365946916] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:07:54,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502583222] [2023-02-14 14:07:54,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 14:07:54,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:07:54,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:07:54,325 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) [2023-02-14 14:07:54,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 14:07:54,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-02-14 14:07:54,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:07:54,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 108 conjunts are in the unsatisfiable core [2023-02-14 14:07:54,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:07:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:07:54,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:08:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:08:00,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502583222] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:08:00,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:08:00,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 108] total 215 [2023-02-14 14:08:00,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776752164] [2023-02-14 14:08:00,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:08:00,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2023-02-14 14:08:00,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:08:00,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2023-02-14 14:08:00,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5944, Invalid=40496, Unknown=0, NotChecked=0, Total=46440 [2023-02-14 14:08:00,218 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) [2023-02-14 14:08:04,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:08:04,927 INFO L93 Difference]: Finished difference Result 650 states and 701 transitions. [2023-02-14 14:08:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2023-02-14 14:08:04,928 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 [2023-02-14 14:08:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:08:04,930 INFO L225 Difference]: With dead ends: 650 [2023-02-14 14:08:04,930 INFO L226 Difference]: Without dead ends: 648 [2023-02-14 14:08:04,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 531 SyntacticMatches, 1 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32497 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=14530, Invalid=88190, Unknown=0, NotChecked=0, Total=102720 [2023-02-14 14:08:04,935 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1505 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-02-14 14:08:04,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 119 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-14 14:08:04,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-02-14 14:08:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 646. [2023-02-14 14:08:04,953 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) [2023-02-14 14:08:04,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 646 transitions. [2023-02-14 14:08:04,954 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 646 transitions. Word has length 320 [2023-02-14 14:08:04,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:08:04,955 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 646 transitions. [2023-02-14 14:08:04,955 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) [2023-02-14 14:08:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 646 transitions. [2023-02-14 14:08:04,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-02-14 14:08:04,962 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:08:04,962 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 53, 52, 52, 52, 1, 1, 1, 1, 1] [2023-02-14 14:08:04,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 14:08:05,167 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 [2023-02-14 14:08:05,168 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-14 14:08:05,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:08:05,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1424668159, now seen corresponding path program 3 times [2023-02-14 14:08:05,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:08:05,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134075869] [2023-02-14 14:08:05,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:08:05,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:08:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:08:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:08:20,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:08:20,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134075869] [2023-02-14 14:08:20,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134075869] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:08:20,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889379420] [2023-02-14 14:08:20,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 14:08:20,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:08:20,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:08:20,567 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) [2023-02-14 14:08:20,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 14:08:20,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2023-02-14 14:08:20,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:08:20,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 214 conjunts are in the unsatisfiable core [2023-02-14 14:08:20,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:08:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:08:21,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:08:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:08:37,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889379420] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:08:37,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:08:37,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214, 214] total 427 [2023-02-14 14:08:37,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450984857] [2023-02-14 14:08:37,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:08:37,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 428 states [2023-02-14 14:08:37,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:08:37,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 428 interpolants. [2023-02-14 14:08:37,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23114, Invalid=159642, Unknown=0, NotChecked=0, Total=182756 [2023-02-14 14:08:37,431 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) [2023-02-14 14:08:55,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:08:55,767 INFO L93 Difference]: Finished difference Result 1292 states and 1397 transitions. [2023-02-14 14:08:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 428 states. [2023-02-14 14:08:55,768 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 [2023-02-14 14:08:55,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:08:55,774 INFO L225 Difference]: With dead ends: 1292 [2023-02-14 14:08:55,774 INFO L226 Difference]: Without dead ends: 1290 [2023-02-14 14:08:55,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1700 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132720 ImplicationChecksByTransitivity, 35.2s TimeCoverageRelationStatistics Valid=57352, Invalid=351608, Unknown=0, NotChecked=0, Total=408960 [2023-02-14 14:08:55,793 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, 1.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:08:55,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4445 Valid, 120 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-14 14:08:55,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2023-02-14 14:08:55,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1288. [2023-02-14 14:08:55,838 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) [2023-02-14 14:08:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1288 transitions. [2023-02-14 14:08:55,843 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1288 transitions. Word has length 638 [2023-02-14 14:08:55,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:08:55,844 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1288 transitions. [2023-02-14 14:08:55,845 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) [2023-02-14 14:08:55,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1288 transitions. [2023-02-14 14:08:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1281 [2023-02-14 14:08:55,876 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:08:55,876 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 106, 106, 106, 106, 106, 106, 106, 106, 106, 1, 1, 1, 1, 1] [2023-02-14 14:08:55,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-14 14:08:56,083 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 [2023-02-14 14:08:56,084 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-14 14:08:56,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:08:56,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1778458181, now seen corresponding path program 4 times [2023-02-14 14:08:56,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:08:56,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134223464] [2023-02-14 14:08:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:08:56,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:08:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:10:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 67204 backedges. 0 proven. 67204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:10:17,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:10:17,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134223464] [2023-02-14 14:10:17,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134223464] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:10:17,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229664210] [2023-02-14 14:10:17,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 14:10:17,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:10:17,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:10:17,090 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) [2023-02-14 14:10:17,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 14:10:17,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 14:10:17,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:10:17,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2157 conjuncts, 428 conjunts are in the unsatisfiable core [2023-02-14 14:10:17,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:10:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 67204 backedges. 0 proven. 67204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:10:18,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:11:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 67204 backedges. 0 proven. 67204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:11:17,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229664210] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:11:17,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:11:17,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [428, 428, 428] total 855 [2023-02-14 14:11:17,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323236985] [2023-02-14 14:11:17,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:11:17,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 856 states [2023-02-14 14:11:17,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:11:17,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 856 interpolants. [2023-02-14 14:11:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92024, Invalid=639856, Unknown=0, NotChecked=0, Total=731880 [2023-02-14 14:11:17,534 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)