./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/rangesum10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/rangesum10.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43671c88cb28f81a53d6c7fbea907e55b0f99c68f8a522c4103c0a12ddf9f652 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-14 21:32:16,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 21:32:16,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 21:32:16,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 21:32:16,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 21:32:16,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 21:32:16,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 21:32:16,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 21:32:16,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 21:32:16,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 21:32:16,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 21:32:16,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 21:32:16,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 21:32:16,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 21:32:16,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 21:32:16,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 21:32:16,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 21:32:16,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 21:32:16,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 21:32:16,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 21:32:16,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 21:32:16,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 21:32:16,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 21:32:16,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 21:32:16,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 21:32:16,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 21:32:16,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 21:32:16,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 21:32:16,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 21:32:16,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 21:32:16,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 21:32:16,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 21:32:16,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 21:32:16,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 21:32:16,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 21:32:16,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 21:32:16,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 21:32:16,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 21:32:16,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 21:32:16,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 21:32:16,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 21:32:16,267 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 21:32:16,304 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 21:32:16,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 21:32:16,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 21:32:16,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 21:32:16,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 21:32:16,306 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 21:32:16,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 21:32:16,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 21:32:16,307 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 21:32:16,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 21:32:16,308 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 21:32:16,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 21:32:16,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 21:32:16,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 21:32:16,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 21:32:16,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 21:32:16,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 21:32:16,309 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 21:32:16,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 21:32:16,309 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 21:32:16,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 21:32:16,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 21:32:16,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 21:32:16,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 21:32:16,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 21:32:16,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 21:32:16,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 21:32:16,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 21:32:16,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 21:32:16,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 21:32:16,312 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 21:32:16,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 21:32:16,312 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 21:32:16,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 21:32:16,312 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 21:32:16,312 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43671c88cb28f81a53d6c7fbea907e55b0f99c68f8a522c4103c0a12ddf9f652 [2023-02-14 21:32:16,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 21:32:16,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 21:32:16,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 21:32:16,605 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 21:32:16,605 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 21:32:16,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/rangesum10.i [2023-02-14 21:32:17,833 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 21:32:18,012 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 21:32:18,013 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum10.i [2023-02-14 21:32:18,021 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa30e13b5/a0ab7d39622d461a9e606765b0b14bf0/FLAGa73a03720 [2023-02-14 21:32:18,041 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa30e13b5/a0ab7d39622d461a9e606765b0b14bf0 [2023-02-14 21:32:18,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 21:32:18,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 21:32:18,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 21:32:18,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 21:32:18,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 21:32:18,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70291dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18, skipping insertion in model container [2023-02-14 21:32:18,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 21:32:18,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 21:32:18,221 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum10.i[1465,1478] [2023-02-14 21:32:18,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 21:32:18,240 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 21:32:18,260 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum10.i[1465,1478] [2023-02-14 21:32:18,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 21:32:18,273 INFO L208 MainTranslator]: Completed translation [2023-02-14 21:32:18,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18 WrapperNode [2023-02-14 21:32:18,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 21:32:18,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 21:32:18,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 21:32:18,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 21:32:18,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,303 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-02-14 21:32:18,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 21:32:18,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 21:32:18,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 21:32:18,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 21:32:18,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,346 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 21:32:18,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 21:32:18,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 21:32:18,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 21:32:18,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18" (1/1) ... [2023-02-14 21:32:18,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 21:32:18,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:18,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-14 21:32:18,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-14 21:32:18,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 21:32:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 21:32:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 21:32:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 21:32:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 21:32:18,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 21:32:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 21:32:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2023-02-14 21:32:18,414 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2023-02-14 21:32:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 21:32:18,506 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 21:32:18,509 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 21:32:18,658 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 21:32:18,663 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 21:32:18,663 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-14 21:32:18,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:32:18 BoogieIcfgContainer [2023-02-14 21:32:18,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 21:32:18,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 21:32:18,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 21:32:18,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 21:32:18,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 09:32:18" (1/3) ... [2023-02-14 21:32:18,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf65e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:32:18, skipping insertion in model container [2023-02-14 21:32:18,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:32:18" (2/3) ... [2023-02-14 21:32:18,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf65e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:32:18, skipping insertion in model container [2023-02-14 21:32:18,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:32:18" (3/3) ... [2023-02-14 21:32:18,672 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum10.i [2023-02-14 21:32:18,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 21:32:18,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 21:32:18,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 21:32:18,784 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@34d5dcae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 21:32:18,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 21:32:18,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:32:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-14 21:32:18,797 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:32:18,798 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:32:18,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:32:18,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:32:18,804 INFO L85 PathProgramCache]: Analyzing trace with hash -275565944, now seen corresponding path program 1 times [2023-02-14 21:32:18,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:32:18,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816875250] [2023-02-14 21:32:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:18,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:32:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:18,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:32:18,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816875250] [2023-02-14 21:32:18,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-14 21:32:18,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522664220] [2023-02-14 21:32:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:18,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:18,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:18,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 21:32:18,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 21:32:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:19,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-14 21:32:19,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:32:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-14 21:32:19,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 21:32:19,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522664220] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 21:32:19,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 21:32:19,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 21:32:19,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322072344] [2023-02-14 21:32:19,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 21:32:19,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 21:32:19,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:32:19,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 21:32:19,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 21:32:19,198 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 21:32:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:32:19,213 INFO L93 Difference]: Finished difference Result 52 states and 73 transitions. [2023-02-14 21:32:19,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 21:32:19,215 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-02-14 21:32:19,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:32:19,219 INFO L225 Difference]: With dead ends: 52 [2023-02-14 21:32:19,219 INFO L226 Difference]: Without dead ends: 24 [2023-02-14 21:32:19,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 21:32:19,225 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:32:19,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:32:19,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-14 21:32:19,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-02-14 21:32:19,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:32:19,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-02-14 21:32:19,257 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 29 [2023-02-14 21:32:19,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:32:19,258 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-02-14 21:32:19,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 21:32:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-02-14 21:32:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-14 21:32:19,260 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:32:19,260 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:32:19,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 21:32:19,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-14 21:32:19,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:32:19,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:32:19,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1257002967, now seen corresponding path program 1 times [2023-02-14 21:32:19,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:32:19,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784460071] [2023-02-14 21:32:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:19,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:32:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:19,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:32:19,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784460071] [2023-02-14 21:32:19,505 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-14 21:32:19,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731835641] [2023-02-14 21:32:19,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:19,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:19,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:19,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 21:32:19,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 21:32:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:19,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 21:32:19,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:32:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-14 21:32:19,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 21:32:19,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731835641] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 21:32:19,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 21:32:19,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 21:32:19,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45280212] [2023-02-14 21:32:19,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 21:32:19,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 21:32:19,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:32:19,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 21:32:19,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 21:32:19,622 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-14 21:32:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:32:19,641 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2023-02-14 21:32:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 21:32:19,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2023-02-14 21:32:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:32:19,643 INFO L225 Difference]: With dead ends: 46 [2023-02-14 21:32:19,643 INFO L226 Difference]: Without dead ends: 26 [2023-02-14 21:32:19,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 21:32:19,646 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:32:19,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:32:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-14 21:32:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2023-02-14 21:32:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:32:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-02-14 21:32:19,660 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 29 [2023-02-14 21:32:19,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:32:19,660 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-02-14 21:32:19,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-14 21:32:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-02-14 21:32:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-14 21:32:19,661 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:32:19,661 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:32:19,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 21:32:19,865 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,SelfDestructingSolverStorable1 [2023-02-14 21:32:19,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:32:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:32:19,866 INFO L85 PathProgramCache]: Analyzing trace with hash -653100523, now seen corresponding path program 1 times [2023-02-14 21:32:19,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:32:19,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926221232] [2023-02-14 21:32:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:19,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:32:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:19,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:32:19,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926221232] [2023-02-14 21:32:19,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-14 21:32:19,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251668771] [2023-02-14 21:32:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:19,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:19,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:19,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 21:32:19,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 21:32:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:19,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 21:32:19,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:32:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-14 21:32:20,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 21:32:20,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251668771] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 21:32:20,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 21:32:20,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 21:32:20,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324456162] [2023-02-14 21:32:20,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 21:32:20,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 21:32:20,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:32:20,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 21:32:20,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 21:32:20,019 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 21:32:20,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:32:20,041 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2023-02-14 21:32:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 21:32:20,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-02-14 21:32:20,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:32:20,043 INFO L225 Difference]: With dead ends: 46 [2023-02-14 21:32:20,044 INFO L226 Difference]: Without dead ends: 28 [2023-02-14 21:32:20,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 21:32:20,049 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:32:20,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:32:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-14 21:32:20,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-02-14 21:32:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:32:20,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-02-14 21:32:20,060 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 31 [2023-02-14 21:32:20,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:32:20,061 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-02-14 21:32:20,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 21:32:20,061 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-02-14 21:32:20,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-14 21:32:20,064 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:32:20,064 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:32:20,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 21:32:20,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:20,271 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:32:20,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:32:20,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1081404920, now seen corresponding path program 1 times [2023-02-14 21:32:20,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:32:20,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023537017] [2023-02-14 21:32:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:20,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:32:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:20,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:32:20,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023537017] [2023-02-14 21:32:20,320 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-14 21:32:20,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845687620] [2023-02-14 21:32:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:20,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:20,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:20,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 21:32:20,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 21:32:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:20,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 21:32:20,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:32:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-14 21:32:20,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 21:32:20,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845687620] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 21:32:20,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 21:32:20,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 21:32:20,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171119250] [2023-02-14 21:32:20,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 21:32:20,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 21:32:20,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:32:20,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 21:32:20,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 21:32:20,466 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 21:32:20,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:32:20,480 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-02-14 21:32:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 21:32:20,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2023-02-14 21:32:20,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:32:20,482 INFO L225 Difference]: With dead ends: 44 [2023-02-14 21:32:20,483 INFO L226 Difference]: Without dead ends: 29 [2023-02-14 21:32:20,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 21:32:20,487 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:32:20,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:32:20,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-14 21:32:20,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-02-14 21:32:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:32:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-02-14 21:32:20,499 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 40 [2023-02-14 21:32:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:32:20,502 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-02-14 21:32:20,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 21:32:20,503 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-02-14 21:32:20,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-14 21:32:20,503 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:32:20,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:32:20,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 21:32:20,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:20,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:32:20,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:32:20,717 INFO L85 PathProgramCache]: Analyzing trace with hash -673301430, now seen corresponding path program 1 times [2023-02-14 21:32:20,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:32:20,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361356528] [2023-02-14 21:32:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:20,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:32:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:20,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:32:20,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361356528] [2023-02-14 21:32:20,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-14 21:32:20,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5177669] [2023-02-14 21:32:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:20,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:20,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:20,763 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 21:32:20,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 21:32:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:20,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 21:32:20,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:32:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-14 21:32:20,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 21:32:20,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5177669] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 21:32:20,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 21:32:20,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 21:32:20,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482605398] [2023-02-14 21:32:20,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 21:32:20,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 21:32:20,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:32:20,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 21:32:20,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 21:32:20,847 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 21:32:20,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:32:20,857 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2023-02-14 21:32:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 21:32:20,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2023-02-14 21:32:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:32:20,860 INFO L225 Difference]: With dead ends: 55 [2023-02-14 21:32:20,860 INFO L226 Difference]: Without dead ends: 34 [2023-02-14 21:32:20,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 21:32:20,861 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:32:20,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:32:20,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-14 21:32:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2023-02-14 21:32:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:32:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-02-14 21:32:20,866 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 42 [2023-02-14 21:32:20,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:32:20,866 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-02-14 21:32:20,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 21:32:20,867 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-02-14 21:32:20,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-14 21:32:20,868 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:32:20,868 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:32:20,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 21:32:21,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:21,074 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:32:21,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:32:21,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1042180377, now seen corresponding path program 1 times [2023-02-14 21:32:21,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:32:21,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128819023] [2023-02-14 21:32:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:21,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:32:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:21,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-02-14 21:32:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:21,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-14 21:32:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:21,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-02-14 21:32:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-14 21:32:21,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:32:21,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128819023] [2023-02-14 21:32:21,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128819023] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 21:32:21,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837393932] [2023-02-14 21:32:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:21,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:21,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:21,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 21:32:21,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 21:32:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:21,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 21:32:21,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:32:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-14 21:32:21,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:32:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-14 21:32:21,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837393932] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:32:21,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 21:32:21,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2023-02-14 21:32:21,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752422211] [2023-02-14 21:32:21,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 21:32:21,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 21:32:21,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:32:21,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 21:32:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-14 21:32:21,431 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-14 21:32:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:32:21,480 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2023-02-14 21:32:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 21:32:21,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2023-02-14 21:32:21,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:32:21,484 INFO L225 Difference]: With dead ends: 69 [2023-02-14 21:32:21,484 INFO L226 Difference]: Without dead ends: 42 [2023-02-14 21:32:21,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-14 21:32:21,486 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:32:21,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:32:21,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-14 21:32:21,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-02-14 21:32:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:32:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-02-14 21:32:21,502 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2023-02-14 21:32:21,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:32:21,505 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-02-14 21:32:21,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-14 21:32:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-02-14 21:32:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-14 21:32:21,509 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:32:21,509 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:32:21,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-14 21:32:21,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:21,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:32:21,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:32:21,719 INFO L85 PathProgramCache]: Analyzing trace with hash -604386836, now seen corresponding path program 2 times [2023-02-14 21:32:21,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:32:21,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442454142] [2023-02-14 21:32:21,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:21,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:32:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:21,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 21:32:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:21,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-14 21:32:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:21,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-14 21:32:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-02-14 21:32:21,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:32:21,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442454142] [2023-02-14 21:32:21,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442454142] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 21:32:21,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652947263] [2023-02-14 21:32:21,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 21:32:21,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:21,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:21,859 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 21:32:21,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 21:32:21,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 21:32:21,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 21:32:21,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 21:32:21,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:32:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-02-14 21:32:21,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:32:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-02-14 21:32:22,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652947263] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:32:22,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 21:32:22,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2023-02-14 21:32:22,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019235114] [2023-02-14 21:32:22,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 21:32:22,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-14 21:32:22,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:32:22,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-14 21:32:22,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-14 21:32:22,076 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-14 21:32:22,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:32:22,142 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2023-02-14 21:32:22,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-14 21:32:22,143 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2023-02-14 21:32:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:32:22,146 INFO L225 Difference]: With dead ends: 86 [2023-02-14 21:32:22,146 INFO L226 Difference]: Without dead ends: 56 [2023-02-14 21:32:22,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-14 21:32:22,150 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:32:22,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 112 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:32:22,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-14 21:32:22,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2023-02-14 21:32:22,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:32:22,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2023-02-14 21:32:22,156 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 57 [2023-02-14 21:32:22,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:32:22,156 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2023-02-14 21:32:22,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-14 21:32:22,157 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2023-02-14 21:32:22,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-02-14 21:32:22,158 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:32:22,158 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:32:22,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-14 21:32:22,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:22,364 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:32:22,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:32:22,365 INFO L85 PathProgramCache]: Analyzing trace with hash 948362870, now seen corresponding path program 1 times [2023-02-14 21:32:22,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:32:22,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413197259] [2023-02-14 21:32:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:32:22,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 21:32:22,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183282446] [2023-02-14 21:32:22,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:22,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:22,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:22,402 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 21:32:22,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-14 21:32:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:32:22,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 21:32:22,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:32:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-02-14 21:32:22,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:32:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 5 proven. 81 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-02-14 21:32:22,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:32:22,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413197259] [2023-02-14 21:32:22,585 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 21:32:22,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183282446] [2023-02-14 21:32:22,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183282446] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:32:22,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 21:32:22,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-14 21:32:22,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138625040] [2023-02-14 21:32:22,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 21:32:22,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 21:32:22,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:32:22,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 21:32:22,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-14 21:32:22,588 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-14 21:32:22,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:32:22,621 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2023-02-14 21:32:22,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 21:32:22,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2023-02-14 21:32:22,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:32:22,623 INFO L225 Difference]: With dead ends: 89 [2023-02-14 21:32:22,623 INFO L226 Difference]: Without dead ends: 63 [2023-02-14 21:32:22,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-14 21:32:22,626 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:32:22,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:32:22,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-02-14 21:32:22,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-02-14 21:32:22,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:32:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2023-02-14 21:32:22,632 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 78 [2023-02-14 21:32:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:32:22,633 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2023-02-14 21:32:22,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-14 21:32:22,633 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2023-02-14 21:32:22,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-02-14 21:32:22,634 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:32:22,634 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 18, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:32:22,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-14 21:32:22,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-14 21:32:22,840 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:32:22,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:32:22,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1285665462, now seen corresponding path program 2 times [2023-02-14 21:32:22,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:32:22,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817807133] [2023-02-14 21:32:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:22,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:32:22,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 21:32:22,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478575180] [2023-02-14 21:32:22,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 21:32:22,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:22,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:22,884 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 21:32:22,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-14 21:32:22,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 21:32:22,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 21:32:22,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-14 21:32:22,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:32:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 326 proven. 70 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2023-02-14 21:32:23,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:32:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2023-02-14 21:32:23,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:32:23,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817807133] [2023-02-14 21:32:23,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 21:32:23,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478575180] [2023-02-14 21:32:23,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478575180] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:32:23,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 21:32:23,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2023-02-14 21:32:23,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165553358] [2023-02-14 21:32:23,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 21:32:23,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 21:32:23,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:32:23,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 21:32:23,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-14 21:32:23,178 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-14 21:32:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:32:23,241 INFO L93 Difference]: Finished difference Result 110 states and 129 transitions. [2023-02-14 21:32:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 21:32:23,242 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 114 [2023-02-14 21:32:23,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:32:23,243 INFO L225 Difference]: With dead ends: 110 [2023-02-14 21:32:23,243 INFO L226 Difference]: Without dead ends: 72 [2023-02-14 21:32:23,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 210 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-14 21:32:23,244 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 21:32:23,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 122 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 21:32:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-02-14 21:32:23,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-02-14 21:32:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 67 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:32:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2023-02-14 21:32:23,251 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 114 [2023-02-14 21:32:23,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:32:23,251 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2023-02-14 21:32:23,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-14 21:32:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2023-02-14 21:32:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-02-14 21:32:23,253 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:32:23,253 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:32:23,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-14 21:32:23,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:23,459 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:32:23,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:32:23,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1864872287, now seen corresponding path program 3 times [2023-02-14 21:32:23,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:32:23,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567554491] [2023-02-14 21:32:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:23,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:32:23,480 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 21:32:23,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924171092] [2023-02-14 21:32:23,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 21:32:23,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:23,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:23,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 21:32:23,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-14 21:32:23,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-14 21:32:23,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 21:32:23,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 21:32:23,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:32:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 650 proven. 1 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2023-02-14 21:32:23,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:32:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2023-02-14 21:32:23,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:32:23,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567554491] [2023-02-14 21:32:23,634 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 21:32:23,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924171092] [2023-02-14 21:32:23,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924171092] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:32:23,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 21:32:23,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-02-14 21:32:23,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686313680] [2023-02-14 21:32:23,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 21:32:23,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 21:32:23,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:32:23,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 21:32:23,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-14 21:32:23,638 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-14 21:32:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:32:23,658 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2023-02-14 21:32:23,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 21:32:23,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 141 [2023-02-14 21:32:23,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:32:23,660 INFO L225 Difference]: With dead ends: 119 [2023-02-14 21:32:23,660 INFO L226 Difference]: Without dead ends: 78 [2023-02-14 21:32:23,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-14 21:32:23,661 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:32:23,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 103 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:32:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-02-14 21:32:23,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-02-14 21:32:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 73 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:32:23,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2023-02-14 21:32:23,671 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 141 [2023-02-14 21:32:23,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:32:23,671 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2023-02-14 21:32:23,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-14 21:32:23,672 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2023-02-14 21:32:23,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-02-14 21:32:23,673 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:32:23,673 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:32:23,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-14 21:32:23,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-14 21:32:23,881 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:32:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:32:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash -105377125, now seen corresponding path program 4 times [2023-02-14 21:32:23,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:32:23,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566311054] [2023-02-14 21:32:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:23,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:32:23,900 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 21:32:23,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204622979] [2023-02-14 21:32:23,901 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 21:32:23,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:23,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:23,902 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 21:32:23,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-14 21:32:24,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 21:32:24,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 21:32:24,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 21:32:24,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:32:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1526 backedges. 650 proven. 16 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2023-02-14 21:32:24,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:32:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1526 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2023-02-14 21:32:24,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:32:24,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566311054] [2023-02-14 21:32:24,143 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 21:32:24,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204622979] [2023-02-14 21:32:24,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204622979] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:32:24,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 21:32:24,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-14 21:32:24,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933958418] [2023-02-14 21:32:24,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 21:32:24,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-14 21:32:24,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:32:24,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-14 21:32:24,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2023-02-14 21:32:24,146 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-14 21:32:24,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:32:24,173 INFO L93 Difference]: Finished difference Result 129 states and 148 transitions. [2023-02-14 21:32:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 21:32:24,173 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 147 [2023-02-14 21:32:24,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:32:24,175 INFO L225 Difference]: With dead ends: 129 [2023-02-14 21:32:24,176 INFO L226 Difference]: Without dead ends: 88 [2023-02-14 21:32:24,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2023-02-14 21:32:24,177 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:32:24,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 78 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:32:24,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-14 21:32:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-02-14 21:32:24,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 83 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:32:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2023-02-14 21:32:24,184 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 147 [2023-02-14 21:32:24,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:32:24,185 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2023-02-14 21:32:24,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-14 21:32:24,185 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2023-02-14 21:32:24,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-02-14 21:32:24,186 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:32:24,186 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:32:24,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-14 21:32:24,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-14 21:32:24,393 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:32:24,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:32:24,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1925080943, now seen corresponding path program 5 times [2023-02-14 21:32:24,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:32:24,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459482729] [2023-02-14 21:32:24,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:32:24,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:32:24,414 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 21:32:24,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025227943] [2023-02-14 21:32:24,414 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 21:32:24,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:32:24,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:32:24,416 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 21:32:24,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-14 21:32:28,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-02-14 21:32:28,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-02-14 21:32:28,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 21:32:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 21:32:28,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 21:32:28,877 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-14 21:32:28,878 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 21:32:28,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-14 21:32:29,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-14 21:32:29,083 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1] [2023-02-14 21:32:29,086 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 21:32:29,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 09:32:29 BoogieIcfgContainer [2023-02-14 21:32:29,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 21:32:29,183 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 21:32:29,183 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 21:32:29,183 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 21:32:29,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:32:18" (3/4) ... [2023-02-14 21:32:29,185 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-14 21:32:29,251 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 21:32:29,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 21:32:29,252 INFO L158 Benchmark]: Toolchain (without parser) took 11206.23ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 102.9MB in the beginning and 67.5MB in the end (delta: 35.4MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. [2023-02-14 21:32:29,252 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 21:32:29,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.74ms. Allocated memory is still 130.0MB. Free memory was 102.5MB in the beginning and 92.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 21:32:29,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.77ms. Allocated memory is still 130.0MB. Free memory was 92.0MB in the beginning and 90.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 21:32:29,253 INFO L158 Benchmark]: Boogie Preprocessor took 44.53ms. Allocated memory is still 130.0MB. Free memory was 90.3MB in the beginning and 88.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 21:32:29,253 INFO L158 Benchmark]: RCFGBuilder took 315.70ms. Allocated memory is still 130.0MB. Free memory was 88.9MB in the beginning and 77.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-14 21:32:29,254 INFO L158 Benchmark]: TraceAbstraction took 10515.22ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 76.4MB in the beginning and 75.9MB in the end (delta: 517.4kB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2023-02-14 21:32:29,254 INFO L158 Benchmark]: Witness Printer took 68.74ms. Allocated memory is still 161.5MB. Free memory was 75.9MB in the beginning and 67.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 21:32:29,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.74ms. Allocated memory is still 130.0MB. Free memory was 102.5MB in the beginning and 92.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.77ms. Allocated memory is still 130.0MB. Free memory was 92.0MB in the beginning and 90.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.53ms. Allocated memory is still 130.0MB. Free memory was 90.3MB in the beginning and 88.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 315.70ms. Allocated memory is still 130.0MB. Free memory was 88.9MB in the beginning and 77.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10515.22ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 76.4MB in the beginning and 75.9MB in the end (delta: 517.4kB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * Witness Printer took 68.74ms. Allocated memory is still 161.5MB. Free memory was 75.9MB in the beginning and 67.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int x[10]; [L43] CALL init_nondet(x) [L16] int i; [L17] i = 0 VAL [i=0, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=1, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=2, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=3, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=4, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=5, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=6, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=7, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=8, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=9, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=10, x={3:0}, x={3:0}] [L17] COND FALSE !(i < 10) VAL [i=10, x={3:0}, x={3:0}] [L43] RET init_nondet(x) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; VAL [x={3:0}] [L49] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483637, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=1, i=7, ret=-2147483637, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483637, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-4294967274, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=2, i=8, ret=-4294967274, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-4294967274, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-2147483632, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=3, i=9, ret=-2147483632, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-2147483632, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=4, i=9, ret=8, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=4, i=10, ret=8, x={3:0}, x={3:0}] [L28] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=8, x={3:0}, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=2, cnt=4, i=10, ret=8, x={3:0}, x={3:0}] [L49] RET, EXPR rangesum(x) VAL [rangesum(x)=2, x={3:0}] [L49] ret = rangesum(x) [L51] EXPR x[0] [L51] temp=x[0] [L51] EXPR x[1] [L51] x[0] = x[1] [L51] x[1] = temp VAL [ret=2, temp=2147483647, x={3:0}] [L52] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483637, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=1, i=7, ret=-2147483637, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483637, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-4294967274, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=2, i=8, ret=-4294967274, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-4294967274, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-2147483632, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=3, i=9, ret=-2147483632, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-2147483632, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=4, i=9, ret=8, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=4, i=10, ret=8, x={3:0}, x={3:0}] [L28] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=8, x={3:0}, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=2, cnt=4, i=10, ret=8, x={3:0}, x={3:0}] [L52] RET, EXPR rangesum(x) VAL [rangesum(x)=2, ret=2, temp=2147483647, x={3:0}] [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; VAL [i=0, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=1, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=2, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=3, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=4, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=5, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=6, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=7, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=8, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=9, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND FALSE !(i<10 -1) VAL [i=9, ret=2, ret2=2, temp=2147483646, x={3:0}] [L57] x[10 -1] = temp VAL [i=9, ret=2, ret2=2, temp=2147483646, x={3:0}] [L58] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483637, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=1, i=7, ret=-2147483637, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483637, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=7, ret=5, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=2, i=8, ret=5, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=2, i=8, ret=5, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=3, i=8, ret=2147483645, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=3, i=9, ret=2147483645, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=3, i=9, ret=2147483645, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=4, i=9, ret=4294967291, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=4, i=10, ret=4294967291, x={3:0}, x={3:0}] [L28] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=4294967291, x={3:0}, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=1073741822, cnt=4, i=10, ret=4294967291, x={3:0}, x={3:0}] [L58] RET, EXPR rangesum(x) VAL [i=9, rangesum(x)=1073741822, ret=2, ret2=2, temp=2147483646, x={3:0}] [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 VAL [i=9, ret=2, ret2=2, ret5=1073741822, temp=2147483646, x={3:0}] [L61] reach_error() VAL [i=9, ret=2, ret2=2, ret5=1073741822, temp=2147483646, x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.3s, OverallIterations: 12, TraceHistogramMax: 30, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 806 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 503 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 200 IncrementalHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 303 mSDtfsCounter, 200 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1335 GetRequests, 1276 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=11, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 11 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1177 NumberOfCodeBlocks, 1073 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 1409 ConstructedInterpolants, 0 QuantifiedInterpolants, 1661 SizeOfPredicates, 9 NumberOfNonLiveVariables, 2388 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 8037/8699 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-14 21:32:29,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE