./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 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-scaling/bresenham-ll_unwindbound10.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 d8ee33f278cd93a3b1e0d551730c6407889b70e338ebc3c857541220d9b0f75f --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 20:24:25,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 20:24:25,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 20:24:25,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 20:24:25,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 20:24:25,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 20:24:25,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 20:24:25,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 20:24:25,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 20:24:25,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 20:24:25,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 20:24:25,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 20:24:25,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 20:24:25,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 20:24:25,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 20:24:25,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 20:24:25,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 20:24:25,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 20:24:25,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 20:24:25,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 20:24:25,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 20:24:25,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 20:24:25,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 20:24:25,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 20:24:25,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 20:24:25,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 20:24:25,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 20:24:25,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 20:24:25,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 20:24:25,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 20:24:25,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 20:24:25,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 20:24:25,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 20:24:25,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 20:24:25,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 20:24:25,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 20:24:25,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 20:24:25,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 20:24:25,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 20:24:25,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 20:24:25,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 20:24:25,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 20:24:25,317 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 20:24:25,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 20:24:25,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 20:24:25,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 20:24:25,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 20:24:25,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 20:24:25,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 20:24:25,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 20:24:25,319 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 20:24:25,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 20:24:25,320 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 20:24:25,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 20:24:25,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 20:24:25,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 20:24:25,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 20:24:25,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 20:24:25,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 20:24:25,321 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 20:24:25,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 20:24:25,321 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 20:24:25,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 20:24:25,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 20:24:25,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 20:24:25,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 20:24:25,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:24:25,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 20:24:25,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 20:24:25,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 20:24:25,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 20:24:25,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 20:24:25,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 20:24:25,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 20:24:25,323 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 20:24:25,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 20:24:25,323 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 20:24:25,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8ee33f278cd93a3b1e0d551730c6407889b70e338ebc3c857541220d9b0f75f [2023-02-15 20:24:25,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 20:24:25,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 20:24:25,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 20:24:25,517 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 20:24:25,518 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 20:24:25,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2023-02-15 20:24:26,431 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 20:24:26,619 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 20:24:26,620 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2023-02-15 20:24:26,625 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dae4cb05/b21363033ff74c92b4d76e10f257ec48/FLAG650f927af [2023-02-15 20:24:27,031 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dae4cb05/b21363033ff74c92b4d76e10f257ec48 [2023-02-15 20:24:27,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 20:24:27,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 20:24:27,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 20:24:27,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 20:24:27,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 20:24:27,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227d9991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27, skipping insertion in model container [2023-02-15 20:24:27,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 20:24:27,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 20:24:27,161 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-scaling/bresenham-ll_unwindbound10.c[597,610] [2023-02-15 20:24:27,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:24:27,180 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 20:24:27,187 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-scaling/bresenham-ll_unwindbound10.c[597,610] [2023-02-15 20:24:27,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:24:27,200 INFO L208 MainTranslator]: Completed translation [2023-02-15 20:24:27,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27 WrapperNode [2023-02-15 20:24:27,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 20:24:27,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 20:24:27,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 20:24:27,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 20:24:27,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,219 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-02-15 20:24:27,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 20:24:27,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 20:24:27,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 20:24:27,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 20:24:27,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,230 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 20:24:27,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 20:24:27,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 20:24:27,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 20:24:27,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27" (1/1) ... [2023-02-15 20:24:27,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:24:27,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:24:27,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 20:24:27,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 20:24:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 20:24:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 20:24:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 20:24:27,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 20:24:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 20:24:27,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 20:24:27,357 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 20:24:27,359 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 20:24:27,461 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 20:24:27,468 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 20:24:27,468 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 20:24:27,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:24:27 BoogieIcfgContainer [2023-02-15 20:24:27,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 20:24:27,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 20:24:27,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 20:24:27,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 20:24:27,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 08:24:27" (1/3) ... [2023-02-15 20:24:27,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65feec62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:24:27, skipping insertion in model container [2023-02-15 20:24:27,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:24:27" (2/3) ... [2023-02-15 20:24:27,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65feec62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:24:27, skipping insertion in model container [2023-02-15 20:24:27,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:24:27" (3/3) ... [2023-02-15 20:24:27,490 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound10.c [2023-02-15 20:24:27,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 20:24:27,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 20:24:27,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 20:24:27,558 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;@4ea8d51e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 20:24:27,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 20:24:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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) [2023-02-15 20:24:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 20:24:27,566 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:24:27,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:24:27,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:24:27,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:24:27,570 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2023-02-15 20:24:27,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:24:27,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995936284] [2023-02-15 20:24:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:27,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:24:27,634 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:24:27,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263580929] [2023-02-15 20:24:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:27,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:24:27,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:24:27,637 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:24:27,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 20:24:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:24:27,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-15 20:24:27,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:24:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:24:27,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:24:27,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:24:27,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995936284] [2023-02-15 20:24:27,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:24:27,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263580929] [2023-02-15 20:24:27,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263580929] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:24:27,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:24:27,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 20:24:27,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903851345] [2023-02-15 20:24:27,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:24:27,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 20:24:27,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:24:27,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 20:24:27,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 20:24:27,916 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 20:24:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:24:27,989 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2023-02-15 20:24:27,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:24:27,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-15 20:24:27,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:24:27,995 INFO L225 Difference]: With dead ends: 54 [2023-02-15 20:24:27,995 INFO L226 Difference]: Without dead ends: 25 [2023-02-15 20:24:27,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 20:24:27,999 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:24:28,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:24:28,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-15 20:24:28,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-02-15 20:24:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 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) [2023-02-15 20:24:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-15 20:24:28,022 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2023-02-15 20:24:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:24:28,022 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-15 20:24:28,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 20:24:28,023 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-15 20:24:28,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 20:24:28,023 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:24:28,024 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:24:28,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 20:24:28,228 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 [2023-02-15 20:24:28,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:24:28,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:24:28,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2023-02-15 20:24:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:24:28,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96348158] [2023-02-15 20:24:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:28,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:24:28,245 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:24:28,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860324898] [2023-02-15 20:24:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:28,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:24:28,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:24:28,248 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:24:28,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 20:24:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:24:28,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 20:24:28,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:24:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:24:28,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:24:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:24:28,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:24:28,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96348158] [2023-02-15 20:24:28,736 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:24:28,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860324898] [2023-02-15 20:24:28,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860324898] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:24:28,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:24:28,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-02-15 20:24:28,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235165121] [2023-02-15 20:24:28,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:24:28,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 20:24:28,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:24:28,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 20:24:28,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-02-15 20:24:28,743 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 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) [2023-02-15 20:24:28,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:24:28,966 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2023-02-15 20:24:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 20:24:28,967 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 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 18 [2023-02-15 20:24:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:24:28,968 INFO L225 Difference]: With dead ends: 41 [2023-02-15 20:24:28,968 INFO L226 Difference]: Without dead ends: 34 [2023-02-15 20:24:28,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-02-15 20:24:28,969 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:24:28,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 64 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:24:28,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-15 20:24:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2023-02-15 20:24:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 20:24:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-02-15 20:24:28,978 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2023-02-15 20:24:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:24:28,979 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-02-15 20:24:28,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 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) [2023-02-15 20:24:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-02-15 20:24:28,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 20:24:28,981 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:24:28,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:24:28,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 20:24:29,194 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 [2023-02-15 20:24:29,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:24:29,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:24:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2023-02-15 20:24:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:24:29,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841895612] [2023-02-15 20:24:29,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:29,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:24:29,202 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:24:29,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644414964] [2023-02-15 20:24:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:29,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:24:29,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:24:29,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:24:29,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 20:24:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:24:29,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 20:24:29,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:24:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:24:29,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:24:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:24:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:24:29,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841895612] [2023-02-15 20:24:29,283 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:24:29,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644414964] [2023-02-15 20:24:29,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644414964] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:24:29,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:24:29,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-15 20:24:29,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510689699] [2023-02-15 20:24:29,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:24:29,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 20:24:29,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:24:29,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 20:24:29,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-15 20:24:29,285 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2023-02-15 20:24:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:24:29,324 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2023-02-15 20:24:29,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 20:24:29,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) Word has length 19 [2023-02-15 20:24:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:24:29,326 INFO L225 Difference]: With dead ends: 73 [2023-02-15 20:24:29,326 INFO L226 Difference]: Without dead ends: 67 [2023-02-15 20:24:29,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-15 20:24:29,327 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:24:29,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 106 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:24:29,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-15 20:24:29,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2023-02-15 20:24:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 20:24:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2023-02-15 20:24:29,335 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2023-02-15 20:24:29,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:24:29,335 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2023-02-15 20:24:29,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2023-02-15 20:24:29,336 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2023-02-15 20:24:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 20:24:29,336 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:24:29,336 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:24:29,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 20:24:29,541 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 [2023-02-15 20:24:29,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:24:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:24:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash 713886481, now seen corresponding path program 1 times [2023-02-15 20:24:29,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:24:29,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112311390] [2023-02-15 20:24:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:29,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:24:29,549 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:24:29,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975524556] [2023-02-15 20:24:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:29,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:24:29,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:24:29,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:24:29,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 20:24:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:24:29,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-15 20:24:29,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:24:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 20:24:29,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:24:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 20:24:30,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:24:30,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112311390] [2023-02-15 20:24:30,014 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:24:30,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975524556] [2023-02-15 20:24:30,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975524556] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:24:30,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:24:30,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2023-02-15 20:24:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843319868] [2023-02-15 20:24:30,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:24:30,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-15 20:24:30,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:24:30,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-15 20:24:30,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-02-15 20:24:30,018 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 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) [2023-02-15 20:24:30,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:24:30,622 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2023-02-15 20:24:30,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 20:24:30,622 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 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 25 [2023-02-15 20:24:30,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:24:30,623 INFO L225 Difference]: With dead ends: 65 [2023-02-15 20:24:30,623 INFO L226 Difference]: Without dead ends: 57 [2023-02-15 20:24:30,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2023-02-15 20:24:30,624 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 57 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 20:24:30,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 78 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 20:24:30,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-15 20:24:30,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2023-02-15 20:24:30,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 20:24:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2023-02-15 20:24:30,632 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 25 [2023-02-15 20:24:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:24:30,632 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2023-02-15 20:24:30,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 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) [2023-02-15 20:24:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2023-02-15 20:24:30,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-15 20:24:30,633 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:24:30,633 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:24:30,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 20:24:30,838 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 [2023-02-15 20:24:30,838 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:24:30,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:24:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1582515168, now seen corresponding path program 1 times [2023-02-15 20:24:30,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:24:30,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211036456] [2023-02-15 20:24:30,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:30,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:24:30,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:24:30,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207404500] [2023-02-15 20:24:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:30,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:24:30,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:24:30,851 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:24:30,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 20:24:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:24:30,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 20:24:30,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:24:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:24:30,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:24:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:24:31,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:24:31,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211036456] [2023-02-15 20:24:31,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:24:31,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207404500] [2023-02-15 20:24:31,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207404500] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:24:31,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:24:31,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-02-15 20:24:31,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555514960] [2023-02-15 20:24:31,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:24:31,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 20:24:31,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:24:31,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 20:24:31,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:24:31,027 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 20:24:31,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:24:31,144 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2023-02-15 20:24:31,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 20:24:31,145 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 49 [2023-02-15 20:24:31,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:24:31,148 INFO L225 Difference]: With dead ends: 116 [2023-02-15 20:24:31,149 INFO L226 Difference]: Without dead ends: 110 [2023-02-15 20:24:31,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2023-02-15 20:24:31,150 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:24:31,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 166 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:24:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-02-15 20:24:31,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-02-15 20:24:31,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-15 20:24:31,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2023-02-15 20:24:31,186 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 49 [2023-02-15 20:24:31,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:24:31,186 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2023-02-15 20:24:31,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 20:24:31,186 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2023-02-15 20:24:31,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-02-15 20:24:31,193 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:24:31,193 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:24:31,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 20:24:31,399 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 [2023-02-15 20:24:31,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:24:31,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:24:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash 297311502, now seen corresponding path program 2 times [2023-02-15 20:24:31,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:24:31,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700077708] [2023-02-15 20:24:31,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:31,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:24:31,413 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:24:31,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635580457] [2023-02-15 20:24:31,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 20:24:31,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:24:31,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:24:31,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:24:31,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 20:24:31,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 20:24:31,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 20:24:31,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 61 conjunts are in the unsatisfiable core [2023-02-15 20:24:31,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:24:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 46 proven. 291 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-15 20:24:32,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:24:35,563 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 46 proven. 291 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-15 20:24:35,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:24:35,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700077708] [2023-02-15 20:24:35,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:24:35,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635580457] [2023-02-15 20:24:35,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635580457] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:24:35,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:24:35,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2023-02-15 20:24:35,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653933773] [2023-02-15 20:24:35,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:24:35,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-02-15 20:24:35,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:24:35,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-02-15 20:24:35,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=2414, Unknown=0, NotChecked=0, Total=2756 [2023-02-15 20:24:35,569 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 53 states, 51 states have (on average 2.392156862745098) internal successors, (122), 52 states have internal predecessors, (122), 22 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-15 20:24:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:24:37,573 INFO L93 Difference]: Finished difference Result 220 states and 244 transitions. [2023-02-15 20:24:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-15 20:24:37,574 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 51 states have (on average 2.392156862745098) internal successors, (122), 52 states have internal predecessors, (122), 22 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 109 [2023-02-15 20:24:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:24:37,575 INFO L225 Difference]: With dead ends: 220 [2023-02-15 20:24:37,575 INFO L226 Difference]: Without dead ends: 212 [2023-02-15 20:24:37,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=619, Invalid=4073, Unknown=0, NotChecked=0, Total=4692 [2023-02-15 20:24:37,578 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 67 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-02-15 20:24:37,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 511 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-02-15 20:24:37,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-02-15 20:24:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 200. [2023-02-15 20:24:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 160 states have (on average 1.125) internal successors, (180), 160 states have internal predecessors, (180), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-02-15 20:24:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 219 transitions. [2023-02-15 20:24:37,607 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 219 transitions. Word has length 109 [2023-02-15 20:24:37,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:24:37,608 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 219 transitions. [2023-02-15 20:24:37,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 51 states have (on average 2.392156862745098) internal successors, (122), 52 states have internal predecessors, (122), 22 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-15 20:24:37,608 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 219 transitions. [2023-02-15 20:24:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-02-15 20:24:37,609 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:24:37,609 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:24:37,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 20:24:37,814 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 [2023-02-15 20:24:37,814 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:24:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:24:37,815 INFO L85 PathProgramCache]: Analyzing trace with hash 977369872, now seen corresponding path program 1 times [2023-02-15 20:24:37,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:24:37,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564608376] [2023-02-15 20:24:37,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:37,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:24:37,824 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:24:37,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976060406] [2023-02-15 20:24:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:24:37,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:24:37,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:24:37,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:24:37,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 20:24:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 20:24:37,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 20:24:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 20:24:37,976 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 20:24:37,976 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 20:24:37,977 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 20:24:37,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 20:24:38,182 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 [2023-02-15 20:24:38,185 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-02-15 20:24:38,188 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 20:24:38,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 08:24:38 BoogieIcfgContainer [2023-02-15 20:24:38,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 20:24:38,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 20:24:38,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 20:24:38,228 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 20:24:38,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:24:27" (3/4) ... [2023-02-15 20:24:38,230 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-15 20:24:38,281 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 20:24:38,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 20:24:38,282 INFO L158 Benchmark]: Toolchain (without parser) took 11247.77ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 116.2MB in the beginning and 104.4MB in the end (delta: 11.9MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2023-02-15 20:24:38,282 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:24:38,282 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.53ms. Allocated memory is still 151.0MB. Free memory was 116.2MB in the beginning and 105.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 20:24:38,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.25ms. Allocated memory is still 151.0MB. Free memory was 105.8MB in the beginning and 104.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:24:38,283 INFO L158 Benchmark]: Boogie Preprocessor took 11.58ms. Allocated memory is still 151.0MB. Free memory was 104.1MB in the beginning and 103.3MB in the end (delta: 764.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:24:38,283 INFO L158 Benchmark]: RCFGBuilder took 237.83ms. Allocated memory is still 151.0MB. Free memory was 103.2MB in the beginning and 92.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 20:24:38,283 INFO L158 Benchmark]: TraceAbstraction took 10741.81ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 91.9MB in the beginning and 109.6MB in the end (delta: -17.7MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2023-02-15 20:24:38,284 INFO L158 Benchmark]: Witness Printer took 53.69ms. Allocated memory is still 182.5MB. Free memory was 109.6MB in the beginning and 104.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 20:24:38,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.53ms. Allocated memory is still 151.0MB. Free memory was 116.2MB in the beginning and 105.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.25ms. Allocated memory is still 151.0MB. Free memory was 105.8MB in the beginning and 104.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.58ms. Allocated memory is still 151.0MB. Free memory was 104.1MB in the beginning and 103.3MB in the end (delta: 764.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 237.83ms. Allocated memory is still 151.0MB. Free memory was 103.2MB in the beginning and 92.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10741.81ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 91.9MB in the beginning and 109.6MB in the end (delta: -17.7MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * Witness Printer took 53.69ms. Allocated memory is still 182.5MB. Free memory was 109.6MB in the beginning and 104.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; VAL [counter=0] [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0, v=-33, X=37, x=0, Y=2, y=0] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=-33, x=0, X=37, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=-33, x=0, x=0, x=0, X=37, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=1, v=-33, x=0, x=0, x=0, X=37, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=1, v=-33, X=37, x=0, x=0, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=1, v=-29, X=37, x=0, x=0, x=0, Y=2, y=0] [L45] x++ VAL [counter=1, v=-29, x=1, x=0, x=0, X=37, Y=2, y=0] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-29, x=0, x=1, x=0, X=37, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=2, v=-29, x=2, x=1, X=37, x=0, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=2, v=-29, x=0, x=2, x=1, X=37, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=2, v=-29, x=2, X=37, x=0, x=1, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=2, v=-25, x=1, x=2, X=37, x=0, Y=2, y=0] [L45] x++ VAL [counter=2, v=-25, x=2, X=37, x=2, x=0, Y=2, y=0] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=-25, x=2, X=37, x=0, x=2, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=3, v=-25, x=0, x=2, X=37, x=4, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=3] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=3, v=-25, X=37, x=0, x=4, x=2, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=3, v=-25, x=2, X=37, x=0, x=4, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=3, v=-21, x=0, X=37, x=2, x=4, Y=2, y=0] [L45] x++ VAL [counter=3, v=-21, x=4, X=37, x=3, x=0, y=0, Y=2] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-21, X=37, x=4, x=3, x=0, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=-21, x=6, x=3, x=0, X=37, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=4] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=4, v=-21, x=3, x=6, x=0, X=37, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=4, v=-21, X=37, x=3, x=0, x=6, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=4, v=-17, X=37, x=3, x=6, x=0, Y=2, y=0] [L45] x++ VAL [counter=4, v=-17, X=37, x=0, x=4, x=6, y=0, Y=2] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=-17, x=6, X=37, x=4, x=0, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=5, v=-17, x=0, x=4, x=8, X=37, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=5] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=5, v=-17, x=4, X=37, x=8, x=0, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=5, v=-17, X=37, x=4, x=8, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=5, v=-13, x=0, X=37, x=4, x=8, y=0, Y=2] [L45] x++ VAL [counter=5, v=-13, x=8, x=0, x=5, X=37, y=0, Y=2] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-13, x=8, x=0, X=37, x=5, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=6, v=-13, x=5, x=10, X=37, x=0, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=6] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=6, v=-13, x=0, x=10, X=37, x=5, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=6, v=-13, x=10, X=37, x=0, x=5, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=6, v=-9, x=0, x=5, X=37, x=10, y=0, Y=2] [L45] x++ VAL [counter=6, v=-9, x=10, x=6, X=37, x=0, y=0, Y=2] [L31] EXPR counter++ VAL [counter=7, counter++=6, v=-9, x=10, x=0, x=6, X=37, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=7, v=-9, x=0, x=6, X=37, x=12, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=7] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=7, v=-9, x=12, x=0, x=6, X=37, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=7, v=-9, X=37, x=0, x=6, x=12, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=7, v=-5, X=37, x=12, x=0, x=6, y=0, Y=2] [L45] x++ VAL [counter=7, v=-5, X=37, x=12, x=0, x=7, y=0, Y=2] [L31] EXPR counter++ VAL [counter=8, counter++=7, v=-5, X=37, x=7, x=0, x=12, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=8, v=-5, x=0, X=37, x=14, x=7, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=8] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=8, v=-5, x=7, X=37, x=0, x=14, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=8, v=-5, x=7, x=14, x=0, X=37, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=8, v=-1, x=14, X=37, x=7, x=0, Y=2, y=0] [L45] x++ VAL [counter=8, v=-1, x=8, x=0, X=37, x=14, Y=2, y=0] [L31] EXPR counter++ VAL [counter=9, counter++=8, v=-1, X=37, x=8, x=0, x=14, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=9, v=-1, X=37, x=8, x=0, x=16, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=9] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=9, v=-1, x=8, x=0, x=16, X=37, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=9, v=-1, x=8, x=0, X=37, x=16, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=9, v=3, x=0, X=37, x=16, x=8, y=0, Y=2] [L45] x++ VAL [counter=9, v=3, x=0, x=16, X=37, x=9, Y=2, y=0] [L31] EXPR counter++ VAL [counter=10, counter++=9, v=3, X=37, x=0, x=9, x=16, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=10, v=3, X=37, x=0, x=9, x=18, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=10] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=10, v=3, x=18, x=0, x=9, X=37, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=10, v=3, x=0, X=37, x=9, x=18, y=0, Y=2] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=10, v=-67, X=37, x=9, x=18, x=0, y=1, Y=2] [L45] x++ VAL [counter=10, v=-67, x=10, X=37, x=0, x=18, Y=2, y=1] [L31] EXPR counter++ VAL [counter=11, counter++=10, v=-67, X=37, x=0, x=18, x=10, y=1, Y=2] [L31] COND FALSE !(counter++<10) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=11, v=-67, x=20, x=10, x=10, X=37, y=1, Y=2] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=11] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.7s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 249 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 989 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 881 mSDsCounter, 133 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3290 IncrementalHoareTripleChecker+Invalid, 3423 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 133 mSolverCounterUnsat, 108 mSDtfsCounter, 3290 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 489 GetRequests, 326 SyntacticMatches, 3 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=6, InterpolantAutomatonStates: 120, 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, 6 MinimizatonAttempts, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 337 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 437 ConstructedInterpolants, 0 QuantifiedInterpolants, 3986 SizeOfPredicates, 30 NumberOfNonLiveVariables, 756 ConjunctsInSsa, 147 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 464/1174 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! [2023-02-15 20:24:38,313 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