./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/EvenOdd01-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/EvenOdd01-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 93e64a210ad8295ef3e6c8bf5a4996e01ec752ae44f5068490e5115d4dda29b5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:05:58,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:05:58,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:05:58,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:05:58,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:05:58,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:05:58,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:05:58,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:05:58,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:05:58,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:05:58,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:05:58,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:05:58,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:05:58,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:05:58,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:05:58,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:05:58,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:05:58,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:05:58,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:05:58,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:05:58,263 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:05:58,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:05:58,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:05:58,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:05:58,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:05:58,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:05:58,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:05:58,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:05:58,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:05:58,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:05:58,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:05:58,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:05:58,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:05:58,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:05:58,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:05:58,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:05:58,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:05:58,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:05:58,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:05:58,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:05:58,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:05:58,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:05:58,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-13 02:05:58,291 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:05:58,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:05:58,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:05:58,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:05:58,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:05:58,293 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:05:58,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:05:58,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:05:58,294 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:05:58,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:05:58,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:05:58,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:05:58,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:05:58,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:05:58,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:05:58,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:05:58,295 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:05:58,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:05:58,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:05:58,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:05:58,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:05:58,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:05:58,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:05:58,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:05:58,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:05:58,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:05:58,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:05:58,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:05:58,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:05:58,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:05:58,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93e64a210ad8295ef3e6c8bf5a4996e01ec752ae44f5068490e5115d4dda29b5 [2022-07-13 02:05:58,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:05:58,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:05:58,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:05:58,508 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:05:58,509 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:05:58,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/EvenOdd01-2.c [2022-07-13 02:05:58,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c73453d/c034ebeceef94fb7b683d28ae6a63e6c/FLAGe6bb1fbce [2022-07-13 02:05:58,874 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:05:58,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/EvenOdd01-2.c [2022-07-13 02:05:58,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c73453d/c034ebeceef94fb7b683d28ae6a63e6c/FLAGe6bb1fbce [2022-07-13 02:05:59,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c73453d/c034ebeceef94fb7b683d28ae6a63e6c [2022-07-13 02:05:59,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:05:59,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:05:59,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:05:59,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:05:59,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:05:59,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:05:59" (1/1) ... [2022-07-13 02:05:59,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c9b0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59, skipping insertion in model container [2022-07-13 02:05:59,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:05:59" (1/1) ... [2022-07-13 02:05:59,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:05:59,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:05:59,445 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/EvenOdd01-2.c[938,951] [2022-07-13 02:05:59,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:05:59,454 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:05:59,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/EvenOdd01-2.c[938,951] [2022-07-13 02:05:59,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:05:59,471 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:05:59,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59 WrapperNode [2022-07-13 02:05:59,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:05:59,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:05:59,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:05:59,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:05:59,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59" (1/1) ... [2022-07-13 02:05:59,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59" (1/1) ... [2022-07-13 02:05:59,490 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2022-07-13 02:05:59,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:05:59,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:05:59,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:05:59,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:05:59,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59" (1/1) ... [2022-07-13 02:05:59,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59" (1/1) ... [2022-07-13 02:05:59,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59" (1/1) ... [2022-07-13 02:05:59,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59" (1/1) ... [2022-07-13 02:05:59,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59" (1/1) ... [2022-07-13 02:05:59,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59" (1/1) ... [2022-07-13 02:05:59,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59" (1/1) ... [2022-07-13 02:05:59,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:05:59,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:05:59,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:05:59,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:05:59,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59" (1/1) ... [2022-07-13 02:05:59,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:05:59,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:59,530 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) [2022-07-13 02:05:59,531 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 [2022-07-13 02:05:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 02:05:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2022-07-13 02:05:59,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2022-07-13 02:05:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 02:05:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2022-07-13 02:05:59,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2022-07-13 02:05:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:05:59,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:05:59,593 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:05:59,594 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:05:59,668 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:05:59,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:05:59,673 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 02:05:59,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:05:59 BoogieIcfgContainer [2022-07-13 02:05:59,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:05:59,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:05:59,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:05:59,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:05:59,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:05:59" (1/3) ... [2022-07-13 02:05:59,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661dce5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:05:59, skipping insertion in model container [2022-07-13 02:05:59,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:59" (2/3) ... [2022-07-13 02:05:59,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661dce5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:05:59, skipping insertion in model container [2022-07-13 02:05:59,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:05:59" (3/3) ... [2022-07-13 02:05:59,679 INFO L111 eAbstractionObserver]: Analyzing ICFG EvenOdd01-2.c [2022-07-13 02:05:59,700 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:05:59,701 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-13 02:05:59,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:05:59,743 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78ee79ce, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@40272ba3 [2022-07-13 02:05:59,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 02:05:59,746 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) [2022-07-13 02:05:59,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 02:05:59,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:59,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:05:59,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:05:59,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:59,760 INFO L85 PathProgramCache]: Analyzing trace with hash -592993799, now seen corresponding path program 1 times [2022-07-13 02:05:59,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:59,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218086176] [2022-07-13 02:05:59,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:59,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:05:59,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:59,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218086176] [2022-07-13 02:05:59,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218086176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:59,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:59,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:05:59,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883455647] [2022-07-13 02:05:59,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:59,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:05:59,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:05:59,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:05:59,954 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, 4 states have (on average 1.75) 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) [2022-07-13 02:06:00,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:00,048 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2022-07-13 02:06:00,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:06:00,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) 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 [2022-07-13 02:06:00,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:00,054 INFO L225 Difference]: With dead ends: 48 [2022-07-13 02:06:00,054 INFO L226 Difference]: Without dead ends: 27 [2022-07-13 02:06:00,056 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 [2022-07-13 02:06:00,058 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:00,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 99 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:06:00,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-13 02:06:00,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-07-13 02:06:00,081 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) [2022-07-13 02:06:00,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-07-13 02:06:00,082 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2022-07-13 02:06:00,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:00,082 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-07-13 02:06:00,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) 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) [2022-07-13 02:06:00,083 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-07-13 02:06:00,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:06:00,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:00,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:06:00,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:06:00,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:06:00,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1202938527, now seen corresponding path program 1 times [2022-07-13 02:06:00,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:00,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112894206] [2022-07-13 02:06:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:00,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:00,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:00,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112894206] [2022-07-13 02:06:00,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112894206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:06:00,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:06:00,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:06:00,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609611361] [2022-07-13 02:06:00,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:06:00,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:06:00,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:00,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:06:00,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:06:00,129 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) 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) [2022-07-13 02:06:00,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:00,173 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-07-13 02:06:00,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:06:00,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) 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 [2022-07-13 02:06:00,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:00,174 INFO L225 Difference]: With dead ends: 27 [2022-07-13 02:06:00,174 INFO L226 Difference]: Without dead ends: 26 [2022-07-13 02:06:00,174 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 [2022-07-13 02:06:00,175 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:00,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:06:00,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-13 02:06:00,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-07-13 02:06:00,178 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) [2022-07-13 02:06:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-07-13 02:06:00,179 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 9 [2022-07-13 02:06:00,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:00,179 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-07-13 02:06:00,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) 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) [2022-07-13 02:06:00,179 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-07-13 02:06:00,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 02:06:00,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:00,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:06:00,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:06:00,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:06:00,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:00,180 INFO L85 PathProgramCache]: Analyzing trace with hash 708932889, now seen corresponding path program 1 times [2022-07-13 02:06:00,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:00,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347119674] [2022-07-13 02:06:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:00,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:00,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:00,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347119674] [2022-07-13 02:06:00,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347119674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:06:00,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:06:00,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 02:06:00,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748792553] [2022-07-13 02:06:00,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:06:00,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:06:00,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:00,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:06:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:06:00,276 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 7 states, 6 states have (on average 2.0) 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) [2022-07-13 02:06:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:00,349 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-07-13 02:06:00,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:06:00,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) 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 [2022-07-13 02:06:00,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:00,352 INFO L225 Difference]: With dead ends: 25 [2022-07-13 02:06:00,352 INFO L226 Difference]: Without dead ends: 23 [2022-07-13 02:06:00,353 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 [2022-07-13 02:06:00,357 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 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 [2022-07-13 02:06:00,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 14 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:06:00,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-13 02:06:00,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-13 02:06:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 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) [2022-07-13 02:06:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-07-13 02:06:00,364 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2022-07-13 02:06:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:00,364 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-07-13 02:06:00,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) 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) [2022-07-13 02:06:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-07-13 02:06:00,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 02:06:00,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:00,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:06:00,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 02:06:00,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:06:00,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash 502083121, now seen corresponding path program 1 times [2022-07-13 02:06:00,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:00,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348117937] [2022-07-13 02:06:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:00,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:00,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:00,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348117937] [2022-07-13 02:06:00,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348117937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:06:00,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:06:00,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 02:06:00,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255263358] [2022-07-13 02:06:00,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:06:00,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:06:00,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:00,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:06:00,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:06:00,420 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 7 states, 5 states have (on average 2.6) 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) [2022-07-13 02:06:00,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:00,465 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-07-13 02:06:00,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:06:00,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) 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 [2022-07-13 02:06:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:00,466 INFO L225 Difference]: With dead ends: 31 [2022-07-13 02:06:00,466 INFO L226 Difference]: Without dead ends: 30 [2022-07-13 02:06:00,466 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 [2022-07-13 02:06:00,467 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:00,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 37 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:06:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-13 02:06:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-07-13 02:06:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 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) [2022-07-13 02:06:00,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-07-13 02:06:00,472 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 15 [2022-07-13 02:06:00,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:00,472 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-07-13 02:06:00,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) 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) [2022-07-13 02:06:00,472 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-07-13 02:06:00,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-13 02:06:00,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:00,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:06:00,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 02:06:00,473 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:06:00,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:00,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1165045203, now seen corresponding path program 1 times [2022-07-13 02:06:00,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:00,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056684385] [2022-07-13 02:06:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:00,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:00,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:00,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056684385] [2022-07-13 02:06:00,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056684385] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:00,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110074883] [2022-07-13 02:06:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:00,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:00,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:00,541 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) [2022-07-13 02:06:00,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 02:06:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:00,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 02:06:00,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:00,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:00,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110074883] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:00,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:06:00,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-07-13 02:06:00,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183453039] [2022-07-13 02:06:00,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:00,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 02:06:00,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 02:06:00,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:06:00,800 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 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) [2022-07-13 02:06:00,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:00,920 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2022-07-13 02:06:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 02:06:00,921 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 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 21 [2022-07-13 02:06:00,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:00,925 INFO L225 Difference]: With dead ends: 50 [2022-07-13 02:06:00,926 INFO L226 Difference]: Without dead ends: 48 [2022-07-13 02:06:00,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-07-13 02:06:00,928 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 43 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:00,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 53 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:06:00,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-13 02:06:00,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-07-13 02:06:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 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) [2022-07-13 02:06:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2022-07-13 02:06:00,955 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 21 [2022-07-13 02:06:00,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:00,957 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2022-07-13 02:06:00,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 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) [2022-07-13 02:06:00,958 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2022-07-13 02:06:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 02:06:00,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:00,959 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:06:00,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 02:06:01,177 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 [2022-07-13 02:06:01,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:06:01,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:01,178 INFO L85 PathProgramCache]: Analyzing trace with hash -924042987, now seen corresponding path program 1 times [2022-07-13 02:06:01,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:01,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771553960] [2022-07-13 02:06:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:01,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:01,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:01,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771553960] [2022-07-13 02:06:01,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771553960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:01,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506524010] [2022-07-13 02:06:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:01,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:01,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:01,304 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) [2022-07-13 02:06:01,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 02:06:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:01,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 02:06:01,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:01,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:01,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506524010] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:01,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:06:01,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-07-13 02:06:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202225666] [2022-07-13 02:06:01,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:01,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-13 02:06:01,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:01,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-13 02:06:01,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2022-07-13 02:06:01,593 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 28 states, 25 states have (on average 2.56) internal successors, (64), 16 states have internal predecessors, (64), 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) [2022-07-13 02:06:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:01,850 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2022-07-13 02:06:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 02:06:01,851 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.56) internal successors, (64), 16 states have internal predecessors, (64), 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 39 [2022-07-13 02:06:01,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:01,852 INFO L225 Difference]: With dead ends: 92 [2022-07-13 02:06:01,852 INFO L226 Difference]: Without dead ends: 90 [2022-07-13 02:06:01,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2022-07-13 02:06:01,855 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 121 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:01,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 76 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:06:01,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-13 02:06:01,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-07-13 02:06:01,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 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) [2022-07-13 02:06:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2022-07-13 02:06:01,884 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 39 [2022-07-13 02:06:01,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:01,885 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2022-07-13 02:06:01,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.56) internal successors, (64), 16 states have internal predecessors, (64), 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) [2022-07-13 02:06:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2022-07-13 02:06:01,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-13 02:06:01,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:01,889 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2022-07-13 02:06:01,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:02,103 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 [2022-07-13 02:06:02,104 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:06:02,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:02,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1136694515, now seen corresponding path program 2 times [2022-07-13 02:06:02,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:02,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397438812] [2022-07-13 02:06:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:02,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:02,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:02,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397438812] [2022-07-13 02:06:02,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397438812] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:02,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117786743] [2022-07-13 02:06:02,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:06:02,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:02,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:02,440 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) [2022-07-13 02:06:02,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 02:06:02,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:06:02,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:02,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 02:06:02,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:02,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:03,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117786743] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:03,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:06:03,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2022-07-13 02:06:03,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738409052] [2022-07-13 02:06:03,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:03,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-13 02:06:03,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:03,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-13 02:06:03,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2022-07-13 02:06:03,161 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 56 states, 53 states have (on average 2.5283018867924527) internal successors, (134), 30 states have internal predecessors, (134), 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) [2022-07-13 02:06:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:03,730 INFO L93 Difference]: Finished difference Result 170 states and 181 transitions. [2022-07-13 02:06:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-13 02:06:03,731 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.5283018867924527) internal successors, (134), 30 states have internal predecessors, (134), 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 81 [2022-07-13 02:06:03,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:03,732 INFO L225 Difference]: With dead ends: 170 [2022-07-13 02:06:03,732 INFO L226 Difference]: Without dead ends: 168 [2022-07-13 02:06:03,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=970, Invalid=5510, Unknown=0, NotChecked=0, Total=6480 [2022-07-13 02:06:03,745 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 313 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:03,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 73 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:06:03,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-13 02:06:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2022-07-13 02:06:03,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 139 states have internal predecessors, (140), 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) [2022-07-13 02:06:03,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2022-07-13 02:06:03,765 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 81 [2022-07-13 02:06:03,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:03,766 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2022-07-13 02:06:03,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.5283018867924527) internal successors, (134), 30 states have internal predecessors, (134), 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) [2022-07-13 02:06:03,766 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2022-07-13 02:06:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 02:06:03,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:03,774 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1] [2022-07-13 02:06:03,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:03,987 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 [2022-07-13 02:06:03,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:06:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash -40232055, now seen corresponding path program 2 times [2022-07-13 02:06:03,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:03,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774810563] [2022-07-13 02:06:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:03,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:04,839 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:04,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:04,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774810563] [2022-07-13 02:06:04,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774810563] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:04,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471868175] [2022-07-13 02:06:04,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:06:04,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:04,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:04,841 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) [2022-07-13 02:06:04,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 02:06:04,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:06:04,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:04,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-13 02:06:04,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:05,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:06,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471868175] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:06,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:06:06,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2022-07-13 02:06:06,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764002382] [2022-07-13 02:06:06,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:06,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-07-13 02:06:06,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:06,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-07-13 02:06:06,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2022-07-13 02:06:06,796 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand has 108 states, 105 states have (on average 2.5142857142857142) internal successors, (264), 56 states have internal predecessors, (264), 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) [2022-07-13 02:06:08,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:08,406 INFO L93 Difference]: Finished difference Result 332 states and 357 transitions. [2022-07-13 02:06:08,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-07-13 02:06:08,407 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 105 states have (on average 2.5142857142857142) internal successors, (264), 56 states have internal predecessors, (264), 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 159 [2022-07-13 02:06:08,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:08,410 INFO L225 Difference]: With dead ends: 332 [2022-07-13 02:06:08,410 INFO L226 Difference]: Without dead ends: 330 [2022-07-13 02:06:08,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2022-07-13 02:06:08,415 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 771 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:08,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 87 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:06:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-07-13 02:06:08,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2022-07-13 02:06:08,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 273 states have (on average 1.0073260073260073) internal successors, (275), 274 states have internal predecessors, (275), 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) [2022-07-13 02:06:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2022-07-13 02:06:08,434 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 159 [2022-07-13 02:06:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:08,435 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2022-07-13 02:06:08,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 105 states have (on average 2.5142857142857142) internal successors, (264), 56 states have internal predecessors, (264), 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) [2022-07-13 02:06:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2022-07-13 02:06:08,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-07-13 02:06:08,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:08,439 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1] [2022-07-13 02:06:08,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:08,651 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 [2022-07-13 02:06:08,651 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:06:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash 339345909, now seen corresponding path program 3 times [2022-07-13 02:06:08,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:08,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548743281] [2022-07-13 02:06:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:08,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:11,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:11,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548743281] [2022-07-13 02:06:11,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548743281] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:11,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830049082] [2022-07-13 02:06:11,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:06:11,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:11,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:11,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:06:11,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 02:06:11,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2022-07-13 02:06:11,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:11,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 108 conjunts are in the unsatisfiable core [2022-07-13 02:06:11,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:11,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:17,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830049082] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:17,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:06:17,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 108] total 215 [2022-07-13 02:06:17,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126854633] [2022-07-13 02:06:17,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:17,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2022-07-13 02:06:17,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:17,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2022-07-13 02:06:17,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5944, Invalid=40496, Unknown=0, NotChecked=0, Total=46440 [2022-07-13 02:06:17,825 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand has 216 states, 213 states have (on average 2.507042253521127) internal successors, (534), 110 states have internal predecessors, (534), 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) [2022-07-13 02:06:23,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:23,785 INFO L93 Difference]: Finished difference Result 650 states and 701 transitions. [2022-07-13 02:06:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-07-13 02:06:23,786 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 213 states have (on average 2.507042253521127) internal successors, (534), 110 states have internal predecessors, (534), 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 321 [2022-07-13 02:06:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:23,788 INFO L225 Difference]: With dead ends: 650 [2022-07-13 02:06:23,788 INFO L226 Difference]: Without dead ends: 648 [2022-07-13 02:06:23,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 533 SyntacticMatches, 1 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32497 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=14530, Invalid=88190, Unknown=0, NotChecked=0, Total=102720 [2022-07-13 02:06:23,796 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1863 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:23,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 109 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 02:06:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-07-13 02:06:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 647. [2022-07-13 02:06:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 538 states have (on average 1.003717472118959) internal successors, (540), 539 states have internal predecessors, (540), 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) [2022-07-13 02:06:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 647 transitions. [2022-07-13 02:06:23,831 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 647 transitions. Word has length 321 [2022-07-13 02:06:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:23,831 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 647 transitions. [2022-07-13 02:06:23,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 213 states have (on average 2.507042253521127) internal successors, (534), 110 states have internal predecessors, (534), 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) [2022-07-13 02:06:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 647 transitions. [2022-07-13 02:06:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2022-07-13 02:06:23,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:23,845 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 52, 52, 1, 1, 1, 1, 1] [2022-07-13 02:06:23,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 02:06:24,059 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 [2022-07-13 02:06:24,060 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:06:24,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:24,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1573793113, now seen corresponding path program 3 times [2022-07-13 02:06:24,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:24,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564796125] [2022-07-13 02:06:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:24,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:33,157 INFO L134 CoverageAnalysis]: Checked inductivity of 16484 backedges. 0 proven. 16484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:33,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:33,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564796125] [2022-07-13 02:06:33,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564796125] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:33,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386442427] [2022-07-13 02:06:33,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:06:33,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:33,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:33,159 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) [2022-07-13 02:06:33,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 02:06:33,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2022-07-13 02:06:33,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:33,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 214 conjunts are in the unsatisfiable core [2022-07-13 02:06:33,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16484 backedges. 0 proven. 16484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:34,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 16484 backedges. 0 proven. 16484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:06:54,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386442427] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:54,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:06:54,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214, 214] total 427 [2022-07-13 02:06:54,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060082553] [2022-07-13 02:06:54,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:54,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 428 states [2022-07-13 02:06:54,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 428 interpolants. [2022-07-13 02:06:54,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23114, Invalid=159642, Unknown=0, NotChecked=0, Total=182756 [2022-07-13 02:06:54,515 INFO L87 Difference]: Start difference. First operand 647 states and 647 transitions. Second operand has 428 states, 425 states have (on average 2.503529411764706) internal successors, (1064), 216 states have internal predecessors, (1064), 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) [2022-07-13 02:07:17,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:17,015 INFO L93 Difference]: Finished difference Result 1292 states and 1397 transitions. [2022-07-13 02:07:17,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 428 states. [2022-07-13 02:07:17,017 INFO L78 Accepts]: Start accepts. Automaton has has 428 states, 425 states have (on average 2.503529411764706) internal successors, (1064), 216 states have internal predecessors, (1064), 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 639 [2022-07-13 02:07:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:17,020 INFO L225 Difference]: With dead ends: 1292 [2022-07-13 02:07:17,020 INFO L226 Difference]: Without dead ends: 1290 [2022-07-13 02:07:17,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1702 GetRequests, 1063 SyntacticMatches, 1 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132720 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=57352, Invalid=351608, Unknown=0, NotChecked=0, Total=408960 [2022-07-13 02:07:17,041 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5124 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5124 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:17,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5124 Valid, 105 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 02:07:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-07-13 02:07:17,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1289. [2022-07-13 02:07:17,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1073 states have (on average 1.0018639328984156) internal successors, (1075), 1074 states have internal predecessors, (1075), 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) [2022-07-13 02:07:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1289 transitions. [2022-07-13 02:07:17,090 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1289 transitions. Word has length 639 [2022-07-13 02:07:17,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:17,090 INFO L495 AbstractCegarLoop]: Abstraction has 1289 states and 1289 transitions. [2022-07-13 02:07:17,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 428 states, 425 states have (on average 2.503529411764706) internal successors, (1064), 216 states have internal predecessors, (1064), 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) [2022-07-13 02:07:17,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1289 transitions. [2022-07-13 02:07:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1282 [2022-07-13 02:07:17,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:17,122 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 107, 106, 106, 106, 106, 106, 106, 106, 106, 1, 1, 1, 1, 1] [2022-07-13 02:07:17,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:17,339 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 [2022-07-13 02:07:17,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:07:17,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:17,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1783726699, now seen corresponding path program 4 times [2022-07-13 02:07:17,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:17,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045138124] [2022-07-13 02:07:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:17,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 67310 backedges. 0 proven. 67310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:07:51,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:51,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045138124] [2022-07-13 02:07:51,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045138124] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:51,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108930673] [2022-07-13 02:07:51,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:07:51,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:51,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:51,648 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) [2022-07-13 02:07:51,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 02:07:52,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:07:52,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:52,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 428 conjunts are in the unsatisfiable core [2022-07-13 02:07:52,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 67310 backedges. 0 proven. 67310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:07:53,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 67310 backedges. 0 proven. 67310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:09:14,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108930673] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:14,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:09:14,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [428, 428, 428] total 855 [2022-07-13 02:09:14,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109203003] [2022-07-13 02:09:14,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:14,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 856 states [2022-07-13 02:09:14,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:14,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 856 interpolants. [2022-07-13 02:09:14,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92024, Invalid=639856, Unknown=0, NotChecked=0, Total=731880 [2022-07-13 02:09:14,995 INFO L87 Difference]: Start difference. First operand 1289 states and 1289 transitions. Second operand has 856 states, 853 states have (on average 2.5017584994138335) internal successors, (2134), 430 states have internal predecessors, (2134), 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)