./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 7e1ff0e6 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-?-7e1ff0e [2023-02-15 01:48:40,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 01:48:40,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 01:48:40,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 01:48:40,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 01:48:40,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 01:48:40,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 01:48:40,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 01:48:40,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 01:48:40,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 01:48:40,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 01:48:40,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 01:48:40,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 01:48:40,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 01:48:40,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 01:48:40,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 01:48:40,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 01:48:40,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 01:48:40,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 01:48:40,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 01:48:40,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 01:48:40,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 01:48:40,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 01:48:40,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 01:48:40,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 01:48:40,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 01:48:40,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 01:48:40,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 01:48:40,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 01:48:40,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 01:48:40,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 01:48:40,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 01:48:40,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 01:48:40,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 01:48:40,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 01:48:40,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 01:48:40,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 01:48:40,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 01:48:40,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 01:48:40,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 01:48:40,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 01:48:40,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-02-15 01:48:40,469 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 01:48:40,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 01:48:40,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 01:48:40,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 01:48:40,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 01:48:40,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 01:48:40,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 01:48:40,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 01:48:40,474 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 01:48:40,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 01:48:40,475 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 01:48:40,475 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 01:48:40,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 01:48:40,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 01:48:40,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 01:48:40,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 01:48:40,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 01:48:40,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 01:48:40,476 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 01:48:40,476 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 01:48:40,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 01:48:40,477 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 01:48:40,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 01:48:40,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 01:48:40,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 01:48:40,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 01:48:40,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 01:48:40,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 01:48:40,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 01:48:40,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 01:48:40,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 01:48:40,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 01:48:40,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 01:48:40,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 01:48:40,479 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 01:48:40,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 01:48:40,479 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 01:48:40,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eda92234de2991558d0fa68c10405194bf8879d4d71f81bbe5c79bf2cf318fe2 [2023-02-15 01:48:40,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 01:48:40,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 01:48:40,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 01:48:40,728 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 01:48:40,728 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 01:48:40,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/EvenOdd03.c [2023-02-15 01:48:41,927 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 01:48:42,111 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 01:48:42,112 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd03.c [2023-02-15 01:48:42,117 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6b7d3c86/00cbf936aaf247c18c67653c73acf216/FLAG15cd40029 [2023-02-15 01:48:42,131 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6b7d3c86/00cbf936aaf247c18c67653c73acf216 [2023-02-15 01:48:42,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 01:48:42,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 01:48:42,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 01:48:42,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 01:48:42,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 01:48:42,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b48482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42, skipping insertion in model container [2023-02-15 01:48:42,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 01:48:42,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 01:48:42,289 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] [2023-02-15 01:48:42,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 01:48:42,298 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 01:48:42,312 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] [2023-02-15 01:48:42,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 01:48:42,325 INFO L208 MainTranslator]: Completed translation [2023-02-15 01:48:42,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42 WrapperNode [2023-02-15 01:48:42,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 01:48:42,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 01:48:42,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 01:48:42,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 01:48:42,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,349 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2023-02-15 01:48:42,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 01:48:42,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 01:48:42,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 01:48:42,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 01:48:42,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,373 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 01:48:42,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 01:48:42,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 01:48:42,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 01:48:42,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42" (1/1) ... [2023-02-15 01:48:42,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 01:48:42,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:48:42,407 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) [2023-02-15 01:48:42,413 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 [2023-02-15 01:48:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 01:48:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2023-02-15 01:48:42,439 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2023-02-15 01:48:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 01:48:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2023-02-15 01:48:42,439 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2023-02-15 01:48:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 01:48:42,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 01:48:42,489 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 01:48:42,491 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 01:48:42,611 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 01:48:42,629 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 01:48:42,629 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 01:48:42,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:48:42 BoogieIcfgContainer [2023-02-15 01:48:42,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 01:48:42,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 01:48:42,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 01:48:42,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 01:48:42,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:48:42" (1/3) ... [2023-02-15 01:48:42,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a099fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:48:42, skipping insertion in model container [2023-02-15 01:48:42,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:48:42" (2/3) ... [2023-02-15 01:48:42,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a099fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:48:42, skipping insertion in model container [2023-02-15 01:48:42,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:48:42" (3/3) ... [2023-02-15 01:48:42,651 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd03.c [2023-02-15 01:48:42,677 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 01:48:42,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-15 01:48:42,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 01:48:42,726 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;@8388057, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 01:48:42,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-15 01:48:42,730 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) [2023-02-15 01:48:42,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 01:48:42,735 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:48:42,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:48:42,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 01:48:42,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:48:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash -593486343, now seen corresponding path program 1 times [2023-02-15 01:48:42,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:48:42,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624564118] [2023-02-15 01:48:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:48:42,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:48:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:48:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:42,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:48:42,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624564118] [2023-02-15 01:48:42,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624564118] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:48:42,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:48:42,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 01:48:42,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659043293] [2023-02-15 01:48:42,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:48:42,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 01:48:42,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:48:42,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 01:48:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:48:42,906 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) [2023-02-15 01:48:42,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:48:42,972 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2023-02-15 01:48:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 01:48:42,973 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 [2023-02-15 01:48:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:48:42,978 INFO L225 Difference]: With dead ends: 51 [2023-02-15 01:48:42,978 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 01:48:42,980 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 [2023-02-15 01:48:42,982 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 [2023-02-15 01:48:42,983 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] [2023-02-15 01:48:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 01:48:43,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2023-02-15 01:48:43,003 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) [2023-02-15 01:48:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2023-02-15 01:48:43,005 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2023-02-15 01:48:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:48:43,005 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2023-02-15 01:48:43,005 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) [2023-02-15 01:48:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2023-02-15 01:48:43,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 01:48:43,006 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:48:43,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:48:43,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 01:48:43,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 01:48:43,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:48:43,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1218207407, now seen corresponding path program 1 times [2023-02-15 01:48:43,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:48:43,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671790739] [2023-02-15 01:48:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:48:43,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:48:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:48:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:43,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:48:43,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671790739] [2023-02-15 01:48:43,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671790739] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:48:43,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:48:43,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 01:48:43,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443841827] [2023-02-15 01:48:43,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:48:43,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 01:48:43,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:48:43,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 01:48:43,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:48:43,079 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) [2023-02-15 01:48:43,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:48:43,107 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2023-02-15 01:48:43,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 01:48:43,108 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 [2023-02-15 01:48:43,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:48:43,109 INFO L225 Difference]: With dead ends: 27 [2023-02-15 01:48:43,109 INFO L226 Difference]: Without dead ends: 26 [2023-02-15 01:48:43,109 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 [2023-02-15 01:48:43,110 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 [2023-02-15 01:48:43,110 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] [2023-02-15 01:48:43,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-15 01:48:43,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2023-02-15 01:48:43,114 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) [2023-02-15 01:48:43,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2023-02-15 01:48:43,114 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 9 [2023-02-15 01:48:43,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:48:43,115 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2023-02-15 01:48:43,115 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) [2023-02-15 01:48:43,115 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2023-02-15 01:48:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 01:48:43,116 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:48:43,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:48:43,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 01:48:43,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 01:48:43,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:48:43,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1182090201, now seen corresponding path program 1 times [2023-02-15 01:48:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:48:43,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407106655] [2023-02-15 01:48:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:48:43,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:48:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:48:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:43,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:48:43,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407106655] [2023-02-15 01:48:43,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407106655] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:48:43,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:48:43,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 01:48:43,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444709571] [2023-02-15 01:48:43,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:48:43,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 01:48:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:48:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 01:48:43,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 01:48:43,263 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) [2023-02-15 01:48:43,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:48:43,382 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2023-02-15 01:48:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 01:48:43,383 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 [2023-02-15 01:48:43,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:48:43,383 INFO L225 Difference]: With dead ends: 34 [2023-02-15 01:48:43,383 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 01:48:43,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-15 01:48:43,385 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 [2023-02-15 01:48:43,385 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] [2023-02-15 01:48:43,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 01:48:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2023-02-15 01:48:43,388 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) [2023-02-15 01:48:43,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2023-02-15 01:48:43,389 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 14 [2023-02-15 01:48:43,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:48:43,389 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2023-02-15 01:48:43,390 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) [2023-02-15 01:48:43,390 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2023-02-15 01:48:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 01:48:43,390 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:48:43,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:48:43,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 01:48:43,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 01:48:43,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:48:43,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2009909491, now seen corresponding path program 1 times [2023-02-15 01:48:43,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:48:43,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527300567] [2023-02-15 01:48:43,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:48:43,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:48:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:48:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:43,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:48:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527300567] [2023-02-15 01:48:43,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527300567] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:48:43,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:48:43,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 01:48:43,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869460219] [2023-02-15 01:48:43,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:48:43,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 01:48:43,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:48:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 01:48:43,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 01:48:43,490 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) [2023-02-15 01:48:43,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:48:43,553 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2023-02-15 01:48:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 01:48:43,554 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 [2023-02-15 01:48:43,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:48:43,555 INFO L225 Difference]: With dead ends: 30 [2023-02-15 01:48:43,555 INFO L226 Difference]: Without dead ends: 28 [2023-02-15 01:48:43,556 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 [2023-02-15 01:48:43,557 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 [2023-02-15 01:48:43,557 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] [2023-02-15 01:48:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-15 01:48:43,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-15 01:48:43,567 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) [2023-02-15 01:48:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2023-02-15 01:48:43,570 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15 [2023-02-15 01:48:43,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:48:43,571 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2023-02-15 01:48:43,571 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) [2023-02-15 01:48:43,572 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2023-02-15 01:48:43,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 01:48:43,574 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:48:43,574 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:48:43,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 01:48:43,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 01:48:43,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:48:43,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1950856391, now seen corresponding path program 1 times [2023-02-15 01:48:43,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:48:43,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384126394] [2023-02-15 01:48:43,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:48:43,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:48:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:48:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:43,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:48:43,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384126394] [2023-02-15 01:48:43,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384126394] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:48:43,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889839336] [2023-02-15 01:48:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:48:43,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:48:43,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:48:43,723 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) [2023-02-15 01:48:43,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 01:48:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:48:43,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 01:48:43,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:48:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:43,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:48:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:44,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889839336] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:48:44,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:48:44,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-15 01:48:44,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612022585] [2023-02-15 01:48:44,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:48:44,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 01:48:44,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:48:44,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 01:48:44,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-02-15 01:48:44,006 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) [2023-02-15 01:48:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:48:44,120 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2023-02-15 01:48:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 01:48:44,121 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 [2023-02-15 01:48:44,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:48:44,122 INFO L225 Difference]: With dead ends: 50 [2023-02-15 01:48:44,122 INFO L226 Difference]: Without dead ends: 48 [2023-02-15 01:48:44,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-02-15 01:48:44,123 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-02-15 01:48:44,124 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] [2023-02-15 01:48:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-15 01:48:44,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2023-02-15 01:48:44,128 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) [2023-02-15 01:48:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2023-02-15 01:48:44,129 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 20 [2023-02-15 01:48:44,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:48:44,129 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2023-02-15 01:48:44,130 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) [2023-02-15 01:48:44,130 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2023-02-15 01:48:44,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 01:48:44,130 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:48:44,131 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-15 01:48:44,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 01:48:44,335 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 [2023-02-15 01:48:44,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 01:48:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:48:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash 540426179, now seen corresponding path program 1 times [2023-02-15 01:48:44,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:48:44,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674562641] [2023-02-15 01:48:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:48:44,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:48:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:48:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:44,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:48:44,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674562641] [2023-02-15 01:48:44,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674562641] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:48:44,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916115403] [2023-02-15 01:48:44,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:48:44,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:48:44,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:48:44,583 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) [2023-02-15 01:48:44,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 01:48:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:48:44,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 01:48:44,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:48:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:44,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:48:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:44,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916115403] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:48:44,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:48:44,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-02-15 01:48:44,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294578193] [2023-02-15 01:48:44,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:48:44,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 01:48:44,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:48:44,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 01:48:44,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-02-15 01:48:44,893 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) [2023-02-15 01:48:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:48:45,152 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2023-02-15 01:48:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-15 01:48:45,153 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 [2023-02-15 01:48:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:48:45,154 INFO L225 Difference]: With dead ends: 92 [2023-02-15 01:48:45,154 INFO L226 Difference]: Without dead ends: 90 [2023-02-15 01:48:45,155 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 [2023-02-15 01:48:45,155 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 [2023-02-15 01:48:45,156 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] [2023-02-15 01:48:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-15 01:48:45,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2023-02-15 01:48:45,162 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) [2023-02-15 01:48:45,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2023-02-15 01:48:45,163 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 38 [2023-02-15 01:48:45,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:48:45,163 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2023-02-15 01:48:45,164 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) [2023-02-15 01:48:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2023-02-15 01:48:45,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-15 01:48:45,165 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:48:45,165 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2023-02-15 01:48:45,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 01:48:45,370 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 [2023-02-15 01:48:45,371 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 01:48:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:48:45,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1122573261, now seen corresponding path program 2 times [2023-02-15 01:48:45,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:48:45,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334110087] [2023-02-15 01:48:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:48:45,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:48:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:48:45,797 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:45,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:48:45,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334110087] [2023-02-15 01:48:45,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334110087] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:48:45,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060661954] [2023-02-15 01:48:45,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 01:48:45,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:48:45,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:48:45,799 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) [2023-02-15 01:48:45,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 01:48:45,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 01:48:45,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:48:45,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-15 01:48:45,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:48:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:45,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:48:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:46,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060661954] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:48:46,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:48:46,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2023-02-15 01:48:46,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046346807] [2023-02-15 01:48:46,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:48:46,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-15 01:48:46,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:48:46,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-15 01:48:46,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2023-02-15 01:48:46,457 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) [2023-02-15 01:48:47,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:48:47,059 INFO L93 Difference]: Finished difference Result 170 states and 181 transitions. [2023-02-15 01:48:47,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-02-15 01:48:47,061 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 [2023-02-15 01:48:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:48:47,062 INFO L225 Difference]: With dead ends: 170 [2023-02-15 01:48:47,062 INFO L226 Difference]: Without dead ends: 168 [2023-02-15 01:48:47,064 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 [2023-02-15 01:48:47,064 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 280 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 01:48:47,067 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] [2023-02-15 01:48:47,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-02-15 01:48:47,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2023-02-15 01:48:47,090 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) [2023-02-15 01:48:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2023-02-15 01:48:47,093 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 80 [2023-02-15 01:48:47,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:48:47,093 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2023-02-15 01:48:47,094 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) [2023-02-15 01:48:47,095 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2023-02-15 01:48:47,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-02-15 01:48:47,100 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:48:47,100 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2023-02-15 01:48:47,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 01:48:47,306 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 [2023-02-15 01:48:47,306 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 01:48:47,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:48:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2127078863, now seen corresponding path program 2 times [2023-02-15 01:48:47,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:48:47,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596980715] [2023-02-15 01:48:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:48:47,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:48:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:48:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:48,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:48:48,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596980715] [2023-02-15 01:48:48,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596980715] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:48:48,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763074348] [2023-02-15 01:48:48,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 01:48:48,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:48:48,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:48:48,522 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) [2023-02-15 01:48:48,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 01:48:48,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 01:48:48,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:48:48,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 54 conjunts are in the unsatisfiable core [2023-02-15 01:48:48,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:48:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:48,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:48:50,489 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:50,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763074348] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:48:50,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:48:50,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2023-02-15 01:48:50,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457652551] [2023-02-15 01:48:50,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:48:50,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2023-02-15 01:48:50,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:48:50,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2023-02-15 01:48:50,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2023-02-15 01:48:50,496 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) [2023-02-15 01:48:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:48:51,940 INFO L93 Difference]: Finished difference Result 332 states and 357 transitions. [2023-02-15 01:48:51,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-02-15 01:48:51,941 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 [2023-02-15 01:48:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:48:51,945 INFO L225 Difference]: With dead ends: 332 [2023-02-15 01:48:51,946 INFO L226 Difference]: Without dead ends: 330 [2023-02-15 01:48:51,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2023-02-15 01:48:51,952 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 970 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-02-15 01:48:51,952 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] [2023-02-15 01:48:51,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-02-15 01:48:51,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2023-02-15 01:48:51,982 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) [2023-02-15 01:48:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2023-02-15 01:48:51,985 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 158 [2023-02-15 01:48:51,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:48:51,986 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2023-02-15 01:48:51,986 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) [2023-02-15 01:48:51,986 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2023-02-15 01:48:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-02-15 01:48:51,993 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:48:51,993 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1] [2023-02-15 01:48:52,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 01:48:52,198 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 [2023-02-15 01:48:52,198 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 01:48:52,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:48:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1888638437, now seen corresponding path program 3 times [2023-02-15 01:48:52,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:48:52,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827649887] [2023-02-15 01:48:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:48:52,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:48:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:48:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:56,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:48:56,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827649887] [2023-02-15 01:48:56,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827649887] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:48:56,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220505453] [2023-02-15 01:48:56,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 01:48:56,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:48:56,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:48:56,456 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) [2023-02-15 01:48:56,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 01:48:56,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-02-15 01:48:56,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:48:56,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 108 conjunts are in the unsatisfiable core [2023-02-15 01:48:56,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:48:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:48:57,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:49:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:49:01,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220505453] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:49:01,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:49:01,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 108] total 215 [2023-02-15 01:49:01,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020388636] [2023-02-15 01:49:01,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:49:01,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2023-02-15 01:49:01,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:49:01,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2023-02-15 01:49:01,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5944, Invalid=40496, Unknown=0, NotChecked=0, Total=46440 [2023-02-15 01:49:01,262 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) [2023-02-15 01:49:05,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:49:05,507 INFO L93 Difference]: Finished difference Result 650 states and 701 transitions. [2023-02-15 01:49:05,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2023-02-15 01:49:05,508 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 [2023-02-15 01:49:05,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:49:05,514 INFO L225 Difference]: With dead ends: 650 [2023-02-15 01:49:05,514 INFO L226 Difference]: Without dead ends: 648 [2023-02-15 01:49:05,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 531 SyntacticMatches, 1 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32497 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=14530, Invalid=88190, Unknown=0, NotChecked=0, Total=102720 [2023-02-15 01:49:05,539 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, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 01:49:05,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 119 Invalid, 1375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 01:49:05,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-02-15 01:49:05,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 646. [2023-02-15 01:49:05,580 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) [2023-02-15 01:49:05,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 646 transitions. [2023-02-15 01:49:05,583 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 646 transitions. Word has length 320 [2023-02-15 01:49:05,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:49:05,584 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 646 transitions. [2023-02-15 01:49:05,584 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) [2023-02-15 01:49:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 646 transitions. [2023-02-15 01:49:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-02-15 01:49:05,593 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:49:05,593 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 53, 52, 52, 52, 1, 1, 1, 1, 1] [2023-02-15 01:49:05,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 01:49:05,798 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 [2023-02-15 01:49:05,799 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 01:49:05,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:49:05,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1424668159, now seen corresponding path program 3 times [2023-02-15 01:49:05,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:49:05,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42288512] [2023-02-15 01:49:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:49:05,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:49:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:49:20,911 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:49:20,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:49:20,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42288512] [2023-02-15 01:49:20,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42288512] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:49:20,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543230198] [2023-02-15 01:49:20,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 01:49:20,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:49:20,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:49:20,913 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) [2023-02-15 01:49:20,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 01:49:21,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2023-02-15 01:49:21,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:49:21,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 214 conjunts are in the unsatisfiable core [2023-02-15 01:49:21,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:49:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:49:21,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:49:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:49:37,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543230198] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:49:37,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:49:37,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214, 214] total 427 [2023-02-15 01:49:37,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973484558] [2023-02-15 01:49:37,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:49:37,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 428 states [2023-02-15 01:49:37,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:49:37,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 428 interpolants. [2023-02-15 01:49:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23114, Invalid=159642, Unknown=0, NotChecked=0, Total=182756 [2023-02-15 01:49:37,953 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) [2023-02-15 01:49:55,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:49:55,717 INFO L93 Difference]: Finished difference Result 1292 states and 1397 transitions. [2023-02-15 01:49:55,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 428 states. [2023-02-15 01:49:55,724 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 [2023-02-15 01:49:55,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:49:55,730 INFO L225 Difference]: With dead ends: 1292 [2023-02-15 01:49:55,730 INFO L226 Difference]: Without dead ends: 1290 [2023-02-15 01:49:55,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1700 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132720 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=57352, Invalid=351608, Unknown=0, NotChecked=0, Total=408960 [2023-02-15 01:49:55,748 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4445 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4445 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 01:49:55,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4445 Valid, 120 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 01:49:55,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2023-02-15 01:49:55,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1288. [2023-02-15 01:49:55,796 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) [2023-02-15 01:49:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1288 transitions. [2023-02-15 01:49:55,800 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1288 transitions. Word has length 638 [2023-02-15 01:49:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:49:55,802 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1288 transitions. [2023-02-15 01:49:55,803 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) [2023-02-15 01:49:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1288 transitions. [2023-02-15 01:49:55,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1281 [2023-02-15 01:49:55,819 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:49:55,820 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 106, 106, 106, 106, 106, 106, 106, 106, 106, 1, 1, 1, 1, 1] [2023-02-15 01:49:55,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-15 01:49:56,024 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 [2023-02-15 01:49:56,025 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 01:49:56,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:49:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1778458181, now seen corresponding path program 4 times [2023-02-15 01:49:56,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 01:49:56,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172931029] [2023-02-15 01:49:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:49:56,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 01:49:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:51:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 67204 backedges. 0 proven. 67204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:51:25,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 01:51:25,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172931029] [2023-02-15 01:51:25,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172931029] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 01:51:25,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025583752] [2023-02-15 01:51:25,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 01:51:25,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 01:51:25,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:51:25,807 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) [2023-02-15 01:51:25,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 01:51:26,378 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 01:51:26,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:51:26,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 2157 conjuncts, 428 conjunts are in the unsatisfiable core [2023-02-15 01:51:26,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:51:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 67204 backedges. 0 proven. 67204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:51:27,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:52:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 67204 backedges. 0 proven. 67204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:52:25,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025583752] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:52:25,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 01:52:25,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [428, 428, 428] total 855 [2023-02-15 01:52:25,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004761973] [2023-02-15 01:52:25,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 01:52:25,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 856 states [2023-02-15 01:52:25,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 01:52:25,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 856 interpolants. [2023-02-15 01:52:25,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92024, Invalid=639856, Unknown=0, NotChecked=0, Total=731880 [2023-02-15 01:52:25,595 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)