./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/bresenham-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/nla-digbench/bresenham-ll.c -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 68505a1040934ea3cdccf61a3fb1a3debf8c6c64330c175637d96b2737c92d5f --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 01:20:49,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 01:20:49,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 01:20:49,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 01:20:49,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 01:20:49,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 01:20:49,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 01:20:49,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 01:20:49,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 01:20:49,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 01:20:49,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 01:20:49,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 01:20:49,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 01:20:49,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 01:20:49,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 01:20:49,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 01:20:49,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 01:20:49,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 01:20:49,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 01:20:49,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 01:20:49,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 01:20:49,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 01:20:49,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 01:20:49,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 01:20:49,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 01:20:49,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 01:20:49,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 01:20:49,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 01:20:49,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 01:20:49,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 01:20:49,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 01:20:49,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 01:20:49,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 01:20:49,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 01:20:49,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 01:20:49,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 01:20:49,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 01:20:49,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 01:20:49,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 01:20:49,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 01:20:49,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 01:20:49,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 01:20:49,312 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 01:20:49,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 01:20:49,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 01:20:49,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 01:20:49,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 01:20:49,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 01:20:49,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 01:20:49,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 01:20:49,314 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 01:20:49,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 01:20:49,315 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 01:20:49,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 01:20:49,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 01:20:49,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 01:20:49,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 01:20:49,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 01:20:49,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 01:20:49,316 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 01:20:49,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 01:20:49,317 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 01:20:49,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 01:20:49,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 01:20:49,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 01:20:49,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 01:20:49,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:20:49,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 01:20:49,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 01:20:49,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 01:20:49,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 01:20:49,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 01:20:49,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 01:20:49,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 01:20:49,319 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 01:20:49,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 01:20:49,320 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 01:20:49,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68505a1040934ea3cdccf61a3fb1a3debf8c6c64330c175637d96b2737c92d5f [2023-02-17 01:20:49,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 01:20:49,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 01:20:49,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 01:20:49,608 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 01:20:49,608 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 01:20:49,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/bresenham-ll.c [2023-02-17 01:20:50,717 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 01:20:50,911 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 01:20:50,912 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/bresenham-ll.c [2023-02-17 01:20:50,918 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/873afeb4a/f09538775c2d4e6d950fb3c531b89f58/FLAG060879354 [2023-02-17 01:20:50,936 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/873afeb4a/f09538775c2d4e6d950fb3c531b89f58 [2023-02-17 01:20:50,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 01:20:50,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 01:20:50,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 01:20:50,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 01:20:50,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 01:20:50,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:20:50" (1/1) ... [2023-02-17 01:20:50,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617f11f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:50, skipping insertion in model container [2023-02-17 01:20:50,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:20:50" (1/1) ... [2023-02-17 01:20:50,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 01:20:50,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 01:20:51,159 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/nla-digbench/bresenham-ll.c[597,610] [2023-02-17 01:20:51,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:20:51,191 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 01:20:51,204 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/nla-digbench/bresenham-ll.c[597,610] [2023-02-17 01:20:51,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:20:51,235 INFO L208 MainTranslator]: Completed translation [2023-02-17 01:20:51,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51 WrapperNode [2023-02-17 01:20:51,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 01:20:51,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 01:20:51,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 01:20:51,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 01:20:51,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51" (1/1) ... [2023-02-17 01:20:51,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51" (1/1) ... [2023-02-17 01:20:51,269 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-02-17 01:20:51,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 01:20:51,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 01:20:51,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 01:20:51,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 01:20:51,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51" (1/1) ... [2023-02-17 01:20:51,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51" (1/1) ... [2023-02-17 01:20:51,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51" (1/1) ... [2023-02-17 01:20:51,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51" (1/1) ... [2023-02-17 01:20:51,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51" (1/1) ... [2023-02-17 01:20:51,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51" (1/1) ... [2023-02-17 01:20:51,302 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51" (1/1) ... [2023-02-17 01:20:51,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51" (1/1) ... [2023-02-17 01:20:51,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 01:20:51,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 01:20:51,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 01:20:51,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 01:20:51,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51" (1/1) ... [2023-02-17 01:20:51,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:20:51,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:20:51,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 01:20:51,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 01:20:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 01:20:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 01:20:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 01:20:51,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 01:20:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 01:20:51,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 01:20:51,423 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 01:20:51,425 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 01:20:51,514 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 01:20:51,519 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 01:20:51,519 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 01:20:51,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:20:51 BoogieIcfgContainer [2023-02-17 01:20:51,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 01:20:51,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 01:20:51,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 01:20:51,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 01:20:51,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 01:20:50" (1/3) ... [2023-02-17 01:20:51,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de35139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:20:51, skipping insertion in model container [2023-02-17 01:20:51,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:20:51" (2/3) ... [2023-02-17 01:20:51,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de35139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:20:51, skipping insertion in model container [2023-02-17 01:20:51,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:20:51" (3/3) ... [2023-02-17 01:20:51,528 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll.c [2023-02-17 01:20:51,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 01:20:51,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 01:20:51,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 01:20:51,607 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;@22616369, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 01:20:51,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 01:20:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 01:20:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 01:20:51,618 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:20:51,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:20:51,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:20:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:20:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1811601823, now seen corresponding path program 1 times [2023-02-17 01:20:51,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:20:51,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448654204] [2023-02-17 01:20:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:20:51,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:20:51,747 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:20:51,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931061190] [2023-02-17 01:20:51,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:20:51,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:20:51,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:20:51,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:20:51,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 01:20:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:20:51,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-17 01:20:51,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:20:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:20:51,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:20:51,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:20:51,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448654204] [2023-02-17 01:20:51,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:20:51,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931061190] [2023-02-17 01:20:51,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931061190] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:20:51,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:20:51,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 01:20:51,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598830178] [2023-02-17 01:20:51,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:20:51,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 01:20:51,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:20:51,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 01:20:51,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 01:20:51,986 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:20:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:20:52,173 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2023-02-17 01:20:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 01:20:52,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-17 01:20:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:20:52,183 INFO L225 Difference]: With dead ends: 50 [2023-02-17 01:20:52,183 INFO L226 Difference]: Without dead ends: 23 [2023-02-17 01:20:52,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-17 01:20:52,192 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:20:52,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 54 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:20:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-17 01:20:52,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-02-17 01:20:52,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 01:20:52,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-02-17 01:20:52,238 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2023-02-17 01:20:52,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:20:52,239 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-02-17 01:20:52,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:20:52,239 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-02-17 01:20:52,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 01:20:52,240 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:20:52,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:20:52,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 01:20:52,446 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 [2023-02-17 01:20:52,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:20:52,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:20:52,447 INFO L85 PathProgramCache]: Analyzing trace with hash -343010020, now seen corresponding path program 1 times [2023-02-17 01:20:52,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:20:52,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816835456] [2023-02-17 01:20:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:20:52,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:20:52,459 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:20:52,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779373] [2023-02-17 01:20:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:20:52,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:20:52,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:20:52,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:20:52,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 01:20:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:20:52,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-17 01:20:52,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:20:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:20:52,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:20:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:20:52,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:20:52,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816835456] [2023-02-17 01:20:52,954 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:20:52,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779373] [2023-02-17 01:20:52,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779373] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:20:52,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:20:52,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2023-02-17 01:20:52,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46263102] [2023-02-17 01:20:52,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:20:52,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-17 01:20:52,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:20:52,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-17 01:20:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-02-17 01:20:52,965 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 18 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 01:20:53,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:20:53,347 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-02-17 01:20:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 01:20:53,349 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-02-17 01:20:53,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:20:53,349 INFO L225 Difference]: With dead ends: 38 [2023-02-17 01:20:53,350 INFO L226 Difference]: Without dead ends: 34 [2023-02-17 01:20:53,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2023-02-17 01:20:53,351 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 01:20:53,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 41 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 01:20:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-17 01:20:53,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2023-02-17 01:20:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 01:20:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-02-17 01:20:53,370 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 16 [2023-02-17 01:20:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:20:53,371 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-02-17 01:20:53,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 01:20:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-02-17 01:20:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 01:20:53,372 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:20:53,372 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:20:53,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 01:20:53,581 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 [2023-02-17 01:20:53,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:20:53,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:20:53,582 INFO L85 PathProgramCache]: Analyzing trace with hash -145421932, now seen corresponding path program 1 times [2023-02-17 01:20:53,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:20:53,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121325261] [2023-02-17 01:20:53,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:20:53,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:20:53,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:20:53,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389183752] [2023-02-17 01:20:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:20:53,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:20:53,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:20:53,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:20:53,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 01:20:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:20:53,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-17 01:20:53,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:20:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 01:20:53,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:20:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 01:20:53,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:20:53,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121325261] [2023-02-17 01:20:53,908 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:20:53,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389183752] [2023-02-17 01:20:53,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389183752] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:20:53,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:20:53,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2023-02-17 01:20:53,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441960195] [2023-02-17 01:20:53,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:20:53,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-17 01:20:53,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:20:53,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-17 01:20:53,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-02-17 01:20:53,912 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 15 states, 11 states have (on average 2.272727272727273) internal successors, (25), 14 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-17 01:20:54,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:20:54,055 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-02-17 01:20:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 01:20:54,056 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.272727272727273) internal successors, (25), 14 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 23 [2023-02-17 01:20:54,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:20:54,058 INFO L225 Difference]: With dead ends: 35 [2023-02-17 01:20:54,058 INFO L226 Difference]: Without dead ends: 29 [2023-02-17 01:20:54,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-02-17 01:20:54,061 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:20:54,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 35 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:20:54,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-17 01:20:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-02-17 01:20:54,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 01:20:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-02-17 01:20:54,076 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2023-02-17 01:20:54,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:20:54,076 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-02-17 01:20:54,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.272727272727273) internal successors, (25), 14 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-17 01:20:54,077 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-02-17 01:20:54,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 01:20:54,078 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:20:54,078 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:20:54,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 01:20:54,289 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 [2023-02-17 01:20:54,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:20:54,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:20:54,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1156539182, now seen corresponding path program 1 times [2023-02-17 01:20:54,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:20:54,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582297453] [2023-02-17 01:20:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:20:54,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:20:54,299 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:20:54,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903859298] [2023-02-17 01:20:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:20:54,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:20:54,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:20:54,302 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:20:54,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 01:20:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:20:54,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-17 01:20:54,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:20:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:20:54,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:20:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 01:20:54,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:20:54,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582297453] [2023-02-17 01:20:54,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:20:54,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903859298] [2023-02-17 01:20:54,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903859298] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:20:54,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:20:54,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2023-02-17 01:20:54,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872888756] [2023-02-17 01:20:54,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:20:54,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-17 01:20:54,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:20:54,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-17 01:20:54,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-02-17 01:20:54,798 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 01:20:55,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:20:55,580 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2023-02-17 01:20:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-17 01:20:55,581 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2023-02-17 01:20:55,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:20:55,581 INFO L225 Difference]: With dead ends: 42 [2023-02-17 01:20:55,581 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 01:20:55,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2023-02-17 01:20:55,583 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 45 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 01:20:55,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 30 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 01:20:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 01:20:55,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 01:20:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:20:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 01:20:55,586 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2023-02-17 01:20:55,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:20:55,586 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 01:20:55,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 01:20:55,586 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 01:20:55,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 01:20:55,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 01:20:55,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-17 01:20:55,795 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 [2023-02-17 01:20:55,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 01:20:55,811 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (let ((.cse30 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse14 (- |ULTIMATE.start_main_~v~0#1|)) (.cse33 (* 2 |ULTIMATE.start_main_~yx~0#1|)) (.cse32 (* .cse23 2)) (.cse13 (- (* .cse30 2))) (.cse4 (- |ULTIMATE.start_main_~X~0#1|)) (.cse5 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (let ((.cse19 (- (* (- 1) |ULTIMATE.start_main_~X~0#1|))) (.cse21 (- .cse5)) (.cse29 (+ (+ (+ .cse32 .cse13) .cse4) .cse5)) (.cse11 (+ .cse14 (+ (+ .cse4 (+ .cse33 (- (* 2 |ULTIMATE.start_main_~xy~0#1|)))) .cse5)))) (let ((.cse6 (= .cse11 0)) (.cse8 (= (+ .cse29 .cse14) 0)) (.cse17 (= (+ (- 1) |ULTIMATE.start_main_~x~0#1|) 0)) (.cse9 (* |ULTIMATE.start_main_~Y~0#1| 0)) (.cse28 (+ (- (* (- 2) |ULTIMATE.start_main_~xy~0#1|)) .cse19 .cse21 (- .cse33))) (.cse31 (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|)) (.cse10 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse15 (+ (+ .cse4 (+ .cse32 (- (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))) .cse5)) (.cse20 (- (* (- 2) .cse30)))) (let ((.cse2 (or .cse31 (= (+ .cse10 (+ .cse15 (+ .cse19 .cse20 .cse21 (- .cse32)))) 0))) (.cse0 (or .cse31 (= (+ .cse10 (+ .cse28 .cse15)) 0))) (.cse3 (= .cse30 |ULTIMATE.start_main_~xy~0#1|)) (.cse1 (let ((.cse24 (= (+ .cse28 .cse29) 0))) (or (and .cse6 .cse8 .cse24) (let ((.cse25 (+ (- (* (- 2) |ULTIMATE.start_main_~Y~0#1|)) .cse14)) (.cse26 (* 2 .cse9))) (and (= (* |ULTIMATE.start_main_~Y~0#1| 1) |ULTIMATE.start_main_~yx~0#1|) .cse17 (= (+ .cse25 (+ (+ .cse4 (+ .cse26 .cse13)) .cse5)) 0) .cse24 (exists ((|ULTIMATE.start_main_~y~0#1| Int)) (let ((.cse27 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= .cse27 |ULTIMATE.start_main_~xy~0#1|) (= (+ .cse25 (+ (+ .cse4 (+ .cse26 (- (* .cse27 2)))) .cse5)) 0))))))))) (.cse7 (= |ULTIMATE.start_main_~y~0#1| 0)) (.cse16 (= .cse23 |ULTIMATE.start_main_~yx~0#1|))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 (= |ULTIMATE.start_main_~v~0#1| (+ .cse4 .cse5)) .cse6 .cse7 .cse8 (= |ULTIMATE.start_main_~yx~0#1| .cse9) (= (+ .cse10 .cse11) 0) (exists ((|ULTIMATE.start_main_~x~0#1| Int)) (let ((.cse12 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (+ (+ (+ (+ (* .cse12 2) .cse13) .cse4) .cse5) .cse14) 0) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= .cse12 |ULTIMATE.start_main_~yx~0#1|)))) (= |ULTIMATE.start_main_~x~0#1| 0) (= (+ .cse10 (+ .cse15 .cse14)) 0) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~X~0#1| 0)) .cse16) (and .cse0 .cse3 .cse1 .cse7 .cse2 .cse16) (and .cse3 .cse17 .cse1 (= |ULTIMATE.start_main_~y~0#1| (+ 0 1)) (<= 0 |ULTIMATE.start_main_~X~0#1|) .cse16) (and .cse0 (let ((.cse18 (+ |ULTIMATE.start_main_~x~0#1| 1))) (or (<= .cse18 |ULTIMATE.start_main_~X~0#1|) (= (+ .cse10 (let ((.cse22 (* 2 (* |ULTIMATE.start_main_~Y~0#1| .cse18)))) (+ (+ .cse19 .cse20 .cse21 (- .cse22)) (+ (+ .cse4 (+ (- (* (* |ULTIMATE.start_main_~y~0#1| .cse18) 2)) .cse22)) .cse5)))) 0))) .cse3 .cse1 .cse7 .cse16))))))) [2023-02-17 01:20:55,812 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 01:20:55,812 INFO L899 garLoopResultBuilder]: For program point L33-1(lines 30 45) no Hoare annotation was computed. [2023-02-17 01:20:55,812 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse11 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse16 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse12 (* .cse16 2)) (.cse5 (- (* .cse11 2))) (.cse6 (- |ULTIMATE.start_main_~X~0#1|)) (.cse7 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (.cse8 (- |ULTIMATE.start_main_~v~0#1|))) (let ((.cse2 (= (+ (- 1) |ULTIMATE.start_main_~x~0#1|) 0)) (.cse14 (* |ULTIMATE.start_main_~Y~0#1| 0)) (.cse3 (= (+ (+ (+ (+ .cse12 .cse5) .cse6) .cse7) .cse8) 0))) (let ((.cse4 (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|)) (.cse1 (or (and .cse2 (= (+ (+ (- (* (- 2) |ULTIMATE.start_main_~Y~0#1|)) .cse8) (+ (+ .cse6 (+ (* 2 .cse14) .cse5)) .cse7)) 0)) .cse3)) (.cse13 (= |ULTIMATE.start_main_~y~0#1| 0))) (or (let ((.cse0 (* |ULTIMATE.start_main_~Y~0#1| 1))) (and (= .cse0 |ULTIMATE.start_main_~yx~0#1|) .cse1 .cse2 (not (<= 1 |ULTIMATE.start_main_~X~0#1|)) (= |ULTIMATE.start_main_~y~0#1| (+ 0 1)) .cse3 (not .cse4) (= (+ (+ (+ (+ (* .cse0 2) .cse5) .cse6) .cse7) .cse8) 0) (<= 0 |ULTIMATE.start_main_~X~0#1|) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~y~0#1| 1)))) (let ((.cse9 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse10 (+ (+ .cse6 (+ .cse12 (- (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))) .cse7))) (and .cse1 (or .cse4 (= (+ .cse9 (+ .cse10 (+ (- (* (- 1) |ULTIMATE.start_main_~X~0#1|)) (- (* (- 2) .cse11)) (- .cse7) (- .cse12)))) 0)) (= (+ .cse9 (+ .cse8 (+ (+ .cse6 (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (- (* 2 |ULTIMATE.start_main_~xy~0#1|)))) .cse7))) 0) (= (+ .cse9 (+ .cse10 .cse8)) 0))) (and (= |ULTIMATE.start_main_~v~0#1| (+ .cse6 .cse7)) .cse13 (= |ULTIMATE.start_main_~yx~0#1| .cse14) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~X~0#1| 0))) (and (= .cse11 |ULTIMATE.start_main_~xy~0#1|) .cse1 .cse13 .cse3 (exists ((|ULTIMATE.start_main_~x~0#1| Int)) (let ((.cse15 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (+ (+ (+ (+ (* .cse15 2) .cse5) .cse6) .cse7) .cse8) 0) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= .cse15 |ULTIMATE.start_main_~yx~0#1|)))) (= .cse16 |ULTIMATE.start_main_~yx~0#1|))))))) [2023-02-17 01:20:55,812 INFO L899 garLoopResultBuilder]: For program point L48-1(line 48) no Hoare annotation was computed. [2023-02-17 01:20:55,813 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 01:20:55,813 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 21 51) the Hoare annotation is: true [2023-02-17 01:20:55,813 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2023-02-17 01:20:55,813 INFO L899 garLoopResultBuilder]: For program point L38-2(lines 38 43) no Hoare annotation was computed. [2023-02-17 01:20:55,813 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 01:20:55,813 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 01:20:55,814 INFO L895 garLoopResultBuilder]: At program point L30-2(lines 30 45) the Hoare annotation is: (let ((.cse17 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse16 (- (* .cse17 2))) (.cse6 (- |ULTIMATE.start_main_~v~0#1|)) (.cse0 (- |ULTIMATE.start_main_~X~0#1|)) (.cse15 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2)) (.cse1 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (let ((.cse4 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse5 (+ (+ .cse0 (+ .cse15 (- (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))) .cse1)) (.cse11 (- (* (- 1) |ULTIMATE.start_main_~X~0#1|))) (.cse12 (- (* (- 2) .cse17))) (.cse13 (- .cse1)) (.cse9 (= (+ (- 1) |ULTIMATE.start_main_~x~0#1|) 0)) (.cse3 (= (+ (+ (+ (+ .cse15 .cse16) .cse0) .cse1) .cse6) 0))) (let ((.cse7 (or (and .cse9 (= (+ (+ (- (* (- 2) |ULTIMATE.start_main_~Y~0#1|)) .cse6) (+ (+ .cse0 (+ (* 2 (* |ULTIMATE.start_main_~Y~0#1| 0)) .cse16)) .cse1)) 0)) .cse3)) (.cse2 (= |ULTIMATE.start_main_~y~0#1| 0)) (.cse8 (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (= (+ .cse4 (+ .cse5 (+ .cse11 .cse12 .cse13 (- .cse15)))) 0)))) (or (and (= |ULTIMATE.start_main_~v~0#1| (+ .cse0 .cse1)) .cse2 .cse3 (= |ULTIMATE.start_main_~x~0#1| 0) (= (+ .cse4 (+ .cse5 .cse6)) 0)) (and .cse7 .cse8) (and .cse7 .cse9 (= |ULTIMATE.start_main_~y~0#1| (+ 0 1)) (<= 0 |ULTIMATE.start_main_~X~0#1|)) (and (let ((.cse10 (+ |ULTIMATE.start_main_~x~0#1| 1))) (or (<= .cse10 |ULTIMATE.start_main_~X~0#1|) (= (+ .cse4 (let ((.cse14 (* 2 (* |ULTIMATE.start_main_~Y~0#1| .cse10)))) (+ (+ .cse11 .cse12 .cse13 (- .cse14)) (+ (+ .cse0 (+ (- (* (* |ULTIMATE.start_main_~y~0#1| .cse10) 2)) .cse14)) .cse1)))) 0))) .cse7 .cse2) (and .cse7 .cse2 .cse8)))))) [2023-02-17 01:20:55,814 INFO L899 garLoopResultBuilder]: For program point L30-3(lines 30 45) no Hoare annotation was computed. [2023-02-17 01:20:55,814 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2023-02-17 01:20:55,814 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2023-02-17 01:20:55,815 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2023-02-17 01:20:55,815 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2023-02-17 01:20:55,815 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 19) the Hoare annotation is: true [2023-02-17 01:20:55,815 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-02-17 01:20:55,818 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-02-17 01:20:55,820 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 01:20:55,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 01:20:55 BoogieIcfgContainer [2023-02-17 01:20:55,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 01:20:55,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 01:20:55,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 01:20:55,857 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 01:20:55,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:20:51" (3/4) ... [2023-02-17 01:20:55,860 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 01:20:55,865 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-17 01:20:55,869 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-02-17 01:20:55,870 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 01:20:55,870 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 01:20:55,870 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 01:20:55,902 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 01:20:55,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 01:20:55,903 INFO L158 Benchmark]: Toolchain (without parser) took 4962.70ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 101.5MB in the beginning and 70.4MB in the end (delta: 31.2MB). Peak memory consumption was 60.1MB. Max. memory is 16.1GB. [2023-02-17 01:20:55,904 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory was 79.7MB in the beginning and 79.6MB in the end (delta: 56.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 01:20:55,904 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.74ms. Allocated memory is still 144.7MB. Free memory was 101.2MB in the beginning and 110.8MB in the end (delta: -9.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-02-17 01:20:55,904 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.20ms. Allocated memory is still 144.7MB. Free memory was 110.8MB in the beginning and 109.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:20:55,904 INFO L158 Benchmark]: Boogie Preprocessor took 34.26ms. Allocated memory is still 144.7MB. Free memory was 109.2MB in the beginning and 108.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 01:20:55,905 INFO L158 Benchmark]: RCFGBuilder took 216.03ms. Allocated memory is still 144.7MB. Free memory was 108.2MB in the beginning and 97.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 01:20:55,905 INFO L158 Benchmark]: TraceAbstraction took 4333.30ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 97.5MB in the beginning and 72.4MB in the end (delta: 25.0MB). Peak memory consumption was 57.5MB. Max. memory is 16.1GB. [2023-02-17 01:20:55,905 INFO L158 Benchmark]: Witness Printer took 46.09ms. Allocated memory is still 174.1MB. Free memory was 72.4MB in the beginning and 70.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:20:55,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory was 79.7MB in the beginning and 79.6MB in the end (delta: 56.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.74ms. Allocated memory is still 144.7MB. Free memory was 101.2MB in the beginning and 110.8MB in the end (delta: -9.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.20ms. Allocated memory is still 144.7MB. Free memory was 110.8MB in the beginning and 109.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.26ms. Allocated memory is still 144.7MB. Free memory was 109.2MB in the beginning and 108.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 216.03ms. Allocated memory is still 144.7MB. Free memory was 108.2MB in the beginning and 97.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4333.30ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 97.5MB in the beginning and 72.4MB in the end (delta: 25.0MB). Peak memory consumption was 57.5MB. Max. memory is 16.1GB. * Witness Printer took 46.09ms. Allocated memory is still 174.1MB. Free memory was 72.4MB in the beginning and 70.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 135 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 160 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 128 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 634 IncrementalHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 32 mSDtfsCounter, 634 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, InterpolantAutomatonStates: 59, 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, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 15 PreInvPairs, 31 NumberOfFragments, 2328 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 124 ConstructedInterpolants, 2 QuantifiedInterpolants, 1352 SizeOfPredicates, 40 NumberOfNonLiveVariables, 279 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 36/52 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((((v == -X + 2 * Y && y == 0) && Y * x * 2 + -(X * y * 2) + -X + 2 * Y + -v == 0) && x == 0) && 2 * y + (-X + (Y * x * 2 + -(2 * (x * y))) + 2 * Y + -v) == 0) || (((-1 + x == 0 && -(-2 * Y) + -v + (-X + (2 * (Y * 0) + -(X * y * 2)) + 2 * Y) == 0) || Y * x * 2 + -(X * y * 2) + -X + 2 * Y + -v == 0) && (x <= X || 2 * y + (-X + (Y * x * 2 + -(2 * (x * y))) + 2 * Y + (-(-1 * X) + -(-2 * (X * y)) + -(2 * Y) + -(Y * x * 2))) == 0))) || (((((-1 + x == 0 && -(-2 * Y) + -v + (-X + (2 * (Y * 0) + -(X * y * 2)) + 2 * Y) == 0) || Y * x * 2 + -(X * y * 2) + -X + 2 * Y + -v == 0) && -1 + x == 0) && y == 0 + 1) && 0 <= X)) || (((x + 1 <= X || 2 * y + (-(-1 * X) + -(-2 * (X * y)) + -(2 * Y) + -(2 * (Y * (x + 1))) + (-X + (-(y * (x + 1) * 2) + 2 * (Y * (x + 1))) + 2 * Y)) == 0) && ((-1 + x == 0 && -(-2 * Y) + -v + (-X + (2 * (Y * 0) + -(X * y * 2)) + 2 * Y) == 0) || Y * x * 2 + -(X * y * 2) + -X + 2 * Y + -v == 0)) && y == 0)) || ((((-1 + x == 0 && -(-2 * Y) + -v + (-X + (2 * (Y * 0) + -(X * y * 2)) + 2 * Y) == 0) || Y * x * 2 + -(X * y * 2) + -X + 2 * Y + -v == 0) && y == 0) && (x <= X || 2 * y + (-X + (Y * x * 2 + -(2 * (x * y))) + 2 * Y + (-(-1 * X) + -(-2 * (X * y)) + -(2 * Y) + -(Y * x * 2))) == 0)) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-17 01:20:55,943 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 Result: TRUE