./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 b5317dae 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-?-b5317da-m [2023-02-16 01:43:33,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:43:33,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:43:33,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:43:33,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:43:33,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:43:33,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:43:33,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:43:33,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:43:33,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:43:33,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:43:33,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:43:33,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:43:33,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:43:33,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:43:33,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:43:33,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:43:33,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:43:33,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:43:33,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:43:33,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:43:33,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:43:33,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:43:33,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:43:34,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:43:34,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:43:34,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:43:34,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:43:34,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:43:34,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:43:34,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:43:34,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:43:34,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:43:34,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:43:34,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:43:34,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:43:34,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:43:34,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:43:34,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:43:34,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:43:34,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:43:34,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:43:34,032 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:43:34,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:43:34,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:43:34,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:43:34,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:43:34,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:43:34,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:43:34,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:43:34,034 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:43:34,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:43:34,034 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:43:34,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:43:34,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:43:34,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:43:34,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:43:34,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:43:34,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:43:34,035 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:43:34,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:43:34,035 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:43:34,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:43:34,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:43:34,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:43:34,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:43:34,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:43:34,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:43:34,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:43:34,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:43:34,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:43:34,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:43:34,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:43:34,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:43:34,037 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:43:34,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:43:34,038 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:43:34,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8ee33f278cd93a3b1e0d551730c6407889b70e338ebc3c857541220d9b0f75f [2023-02-16 01:43:34,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:43:34,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:43:34,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:43:34,217 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:43:34,218 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:43:34,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2023-02-16 01:43:35,153 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:43:35,277 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:43:35,278 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2023-02-16 01:43:35,282 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16e622dd2/16a42eb350a5448ab7174188e1257a8a/FLAGbc6112b6b [2023-02-16 01:43:35,299 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16e622dd2/16a42eb350a5448ab7174188e1257a8a [2023-02-16 01:43:35,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:43:35,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:43:35,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:43:35,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:43:35,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:43:35,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302fc2ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35, skipping insertion in model container [2023-02-16 01:43:35,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:43:35,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:43:35,437 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] [2023-02-16 01:43:35,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:43:35,465 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:43:35,475 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] [2023-02-16 01:43:35,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:43:35,503 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:43:35,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35 WrapperNode [2023-02-16 01:43:35,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:43:35,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:43:35,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:43:35,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:43:35,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,528 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-02-16 01:43:35,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:43:35,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:43:35,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:43:35,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:43:35,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,553 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:43:35,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:43:35,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:43:35,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:43:35,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35" (1/1) ... [2023-02-16 01:43:35,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:43:35,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:43:35,583 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) [2023-02-16 01:43:35,585 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 [2023-02-16 01:43:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:43:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:43:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:43:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:43:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 01:43:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 01:43:35,664 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:43:35,665 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:43:35,808 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:43:35,828 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:43:35,828 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-16 01:43:35,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:43:35 BoogieIcfgContainer [2023-02-16 01:43:35,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:43:35,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:43:35,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:43:35,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:43:35,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:43:35" (1/3) ... [2023-02-16 01:43:35,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a66a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:43:35, skipping insertion in model container [2023-02-16 01:43:35,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:43:35" (2/3) ... [2023-02-16 01:43:35,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a66a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:43:35, skipping insertion in model container [2023-02-16 01:43:35,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:43:35" (3/3) ... [2023-02-16 01:43:35,835 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound10.c [2023-02-16 01:43:35,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:43:35,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 01:43:35,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:43:35,902 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;@25728a38, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:43:35,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 01:43:35,905 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) [2023-02-16 01:43:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-16 01:43:35,909 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:43:35,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:43:35,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:43:35,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:43:35,913 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2023-02-16 01:43:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:43:35,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069222331] [2023-02-16 01:43:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:35,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:43:35,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:43:35,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584565199] [2023-02-16 01:43:35,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:35,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:43:35,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:43:35,981 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) [2023-02-16 01:43:35,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:43:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:43:36,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-16 01:43:36,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:43:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:43:36,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:43:36,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:43:36,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069222331] [2023-02-16 01:43:36,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:43:36,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584565199] [2023-02-16 01:43:36,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584565199] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:43:36,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:43:36,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 01:43:36,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086619864] [2023-02-16 01:43:36,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:43:36,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 01:43:36,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:43:36,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 01:43:36,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:43:36,197 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) [2023-02-16 01:43:36,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:43:36,281 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2023-02-16 01:43:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 01:43:36,289 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 [2023-02-16 01:43:36,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:43:36,294 INFO L225 Difference]: With dead ends: 54 [2023-02-16 01:43:36,294 INFO L226 Difference]: Without dead ends: 25 [2023-02-16 01:43:36,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-16 01:43:36,299 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 [2023-02-16 01:43:36,302 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] [2023-02-16 01:43:36,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-16 01:43:36,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-02-16 01:43:36,333 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) [2023-02-16 01:43:36,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-16 01:43:36,334 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2023-02-16 01:43:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:43:36,335 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-16 01:43:36,335 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) [2023-02-16 01:43:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-16 01:43:36,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 01:43:36,336 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:43:36,336 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:43:36,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 01:43:36,540 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 [2023-02-16 01:43:36,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:43:36,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:43:36,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2023-02-16 01:43:36,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:43:36,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415399915] [2023-02-16 01:43:36,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:36,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:43:36,559 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:43:36,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53465220] [2023-02-16 01:43:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:36,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:43:36,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:43:36,565 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) [2023-02-16 01:43:36,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:43:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:43:36,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-16 01:43:36,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:43:36,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:43:36,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:43:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:43:37,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:43:37,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415399915] [2023-02-16 01:43:37,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:43:37,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53465220] [2023-02-16 01:43:37,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53465220] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:43:37,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:43:37,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-02-16 01:43:37,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880443924] [2023-02-16 01:43:37,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:43:37,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 01:43:37,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:43:37,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 01:43:37,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-02-16 01:43:37,055 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) [2023-02-16 01:43:37,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:43:37,352 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2023-02-16 01:43:37,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 01:43:37,355 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 [2023-02-16 01:43:37,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:43:37,355 INFO L225 Difference]: With dead ends: 41 [2023-02-16 01:43:37,355 INFO L226 Difference]: Without dead ends: 34 [2023-02-16 01:43:37,356 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 [2023-02-16 01:43:37,357 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:43:37,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 64 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 01:43:37,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-16 01:43:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2023-02-16 01:43:37,363 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) [2023-02-16 01:43:37,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-02-16 01:43:37,364 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2023-02-16 01:43:37,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:43:37,364 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-02-16 01:43:37,364 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) [2023-02-16 01:43:37,364 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-02-16 01:43:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 01:43:37,365 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:43:37,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:43:37,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 01:43:37,570 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 [2023-02-16 01:43:37,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:43:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:43:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2023-02-16 01:43:37,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:43:37,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141659535] [2023-02-16 01:43:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:37,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:43:37,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:43:37,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620054237] [2023-02-16 01:43:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:37,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:43:37,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:43:37,584 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) [2023-02-16 01:43:37,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 01:43:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:43:37,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 01:43:37,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:43:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:43:37,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:43:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:43:37,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:43:37,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141659535] [2023-02-16 01:43:37,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:43:37,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620054237] [2023-02-16 01:43:37,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620054237] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:43:37,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:43:37,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-16 01:43:37,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363673874] [2023-02-16 01:43:37,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:43:37,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 01:43:37,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:43:37,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 01:43:37,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-16 01:43:37,682 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) [2023-02-16 01:43:37,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:43:37,746 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2023-02-16 01:43:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 01:43:37,746 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 [2023-02-16 01:43:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:43:37,750 INFO L225 Difference]: With dead ends: 73 [2023-02-16 01:43:37,750 INFO L226 Difference]: Without dead ends: 67 [2023-02-16 01:43:37,752 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 [2023-02-16 01:43:37,755 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 [2023-02-16 01:43:37,761 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] [2023-02-16 01:43:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-16 01:43:37,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2023-02-16 01:43:37,769 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) [2023-02-16 01:43:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2023-02-16 01:43:37,769 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2023-02-16 01:43:37,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:43:37,770 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2023-02-16 01:43:37,770 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) [2023-02-16 01:43:37,770 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2023-02-16 01:43:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 01:43:37,770 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:43:37,770 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:43:37,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-16 01:43:37,985 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 [2023-02-16 01:43:37,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:43:37,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:43:37,985 INFO L85 PathProgramCache]: Analyzing trace with hash 713886481, now seen corresponding path program 1 times [2023-02-16 01:43:37,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:43:37,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807823302] [2023-02-16 01:43:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:37,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:43:37,995 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:43:37,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104021777] [2023-02-16 01:43:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:37,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:43:37,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:43:37,998 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) [2023-02-16 01:43:38,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 01:43:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:43:38,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-16 01:43:38,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:43:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:43:38,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:43:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:43:38,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:43:38,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807823302] [2023-02-16 01:43:38,448 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:43:38,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104021777] [2023-02-16 01:43:38,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104021777] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:43:38,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:43:38,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2023-02-16 01:43:38,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783434251] [2023-02-16 01:43:38,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:43:38,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-16 01:43:38,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:43:38,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-16 01:43:38,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-02-16 01:43:38,453 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) [2023-02-16 01:43:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:43:39,038 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2023-02-16 01:43:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-16 01:43:39,039 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 [2023-02-16 01:43:39,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:43:39,039 INFO L225 Difference]: With dead ends: 65 [2023-02-16 01:43:39,039 INFO L226 Difference]: Without dead ends: 57 [2023-02-16 01:43:39,040 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 [2023-02-16 01:43:39,040 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 57 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-02-16 01:43:39,041 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] [2023-02-16 01:43:39,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-16 01:43:39,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2023-02-16 01:43:39,048 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) [2023-02-16 01:43:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2023-02-16 01:43:39,049 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 25 [2023-02-16 01:43:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:43:39,049 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2023-02-16 01:43:39,049 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) [2023-02-16 01:43:39,049 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2023-02-16 01:43:39,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-16 01:43:39,050 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:43:39,050 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:43:39,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 01:43:39,254 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 [2023-02-16 01:43:39,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:43:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:43:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1582515168, now seen corresponding path program 1 times [2023-02-16 01:43:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:43:39,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51393864] [2023-02-16 01:43:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:39,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:43:39,272 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:43:39,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205965242] [2023-02-16 01:43:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:39,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:43:39,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:43:39,285 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) [2023-02-16 01:43:39,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 01:43:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:43:39,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 01:43:39,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:43:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:43:39,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:43:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 01:43:39,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:43:39,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51393864] [2023-02-16 01:43:39,459 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:43:39,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205965242] [2023-02-16 01:43:39,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205965242] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:43:39,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:43:39,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-02-16 01:43:39,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859482] [2023-02-16 01:43:39,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:43:39,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 01:43:39,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:43:39,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 01:43:39,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-16 01:43:39,461 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) [2023-02-16 01:43:39,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:43:39,588 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2023-02-16 01:43:39,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 01:43:39,589 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 [2023-02-16 01:43:39,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:43:39,592 INFO L225 Difference]: With dead ends: 116 [2023-02-16 01:43:39,592 INFO L226 Difference]: Without dead ends: 110 [2023-02-16 01:43:39,593 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 [2023-02-16 01:43:39,594 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 [2023-02-16 01:43:39,595 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] [2023-02-16 01:43:39,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-02-16 01:43:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-02-16 01:43:39,624 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) [2023-02-16 01:43:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2023-02-16 01:43:39,629 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 49 [2023-02-16 01:43:39,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:43:39,629 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2023-02-16 01:43:39,629 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) [2023-02-16 01:43:39,629 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2023-02-16 01:43:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-02-16 01:43:39,635 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:43:39,635 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:43:39,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-16 01:43:39,840 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 [2023-02-16 01:43:39,841 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:43:39,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:43:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash 297311502, now seen corresponding path program 2 times [2023-02-16 01:43:39,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:43:39,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277856245] [2023-02-16 01:43:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:39,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:43:39,852 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:43:39,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953498901] [2023-02-16 01:43:39,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 01:43:39,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:43:39,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:43:39,856 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) [2023-02-16 01:43:39,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 01:43:39,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 01:43:39,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:43:39,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 61 conjunts are in the unsatisfiable core [2023-02-16 01:43:39,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:43:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 46 proven. 291 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-16 01:43:40,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:43:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 46 proven. 291 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-16 01:43:44,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:43:44,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277856245] [2023-02-16 01:43:44,245 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:43:44,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953498901] [2023-02-16 01:43:44,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953498901] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:43:44,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:43:44,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2023-02-16 01:43:44,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237742346] [2023-02-16 01:43:44,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:43:44,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-02-16 01:43:44,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:43:44,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-02-16 01:43:44,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=2414, Unknown=0, NotChecked=0, Total=2756 [2023-02-16 01:43:44,248 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) [2023-02-16 01:43:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:43:46,145 INFO L93 Difference]: Finished difference Result 220 states and 244 transitions. [2023-02-16 01:43:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-16 01:43:46,145 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 [2023-02-16 01:43:46,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:43:46,147 INFO L225 Difference]: With dead ends: 220 [2023-02-16 01:43:46,147 INFO L226 Difference]: Without dead ends: 212 [2023-02-16 01:43:46,148 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 [2023-02-16 01:43:46,148 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 67 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:43:46,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 511 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-16 01:43:46,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-02-16 01:43:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 200. [2023-02-16 01:43:46,166 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) [2023-02-16 01:43:46,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 219 transitions. [2023-02-16 01:43:46,167 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 219 transitions. Word has length 109 [2023-02-16 01:43:46,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:43:46,167 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 219 transitions. [2023-02-16 01:43:46,168 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) [2023-02-16 01:43:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 219 transitions. [2023-02-16 01:43:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-02-16 01:43:46,169 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:43:46,169 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:43:46,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 01:43:46,372 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 [2023-02-16 01:43:46,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:43:46,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:43:46,373 INFO L85 PathProgramCache]: Analyzing trace with hash 977369872, now seen corresponding path program 1 times [2023-02-16 01:43:46,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:43:46,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658539067] [2023-02-16 01:43:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:46,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:43:46,385 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:43:46,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519079256] [2023-02-16 01:43:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:43:46,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:43:46,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:43:46,387 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) [2023-02-16 01:43:46,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 01:43:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 01:43:46,451 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 01:43:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 01:43:46,519 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 01:43:46,520 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-16 01:43:46,521 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 01:43:46,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 01:43:46,727 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 [2023-02-16 01:43:46,730 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-02-16 01:43:46,732 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 01:43:46,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 01:43:46 BoogieIcfgContainer [2023-02-16 01:43:46,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 01:43:46,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 01:43:46,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 01:43:46,774 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 01:43:46,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:43:35" (3/4) ... [2023-02-16 01:43:46,775 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-16 01:43:46,828 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 01:43:46,829 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 01:43:46,829 INFO L158 Benchmark]: Toolchain (without parser) took 11527.47ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 127.3MB in the beginning and 146.6MB in the end (delta: -19.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2023-02-16 01:43:46,829 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:43:46,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.18ms. Allocated memory is still 163.6MB. Free memory was 126.8MB in the beginning and 116.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 01:43:46,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.40ms. Allocated memory is still 163.6MB. Free memory was 116.2MB in the beginning and 114.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:43:46,830 INFO L158 Benchmark]: Boogie Preprocessor took 29.63ms. Allocated memory is still 163.6MB. Free memory was 114.7MB in the beginning and 113.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:43:46,830 INFO L158 Benchmark]: RCFGBuilder took 270.19ms. Allocated memory is still 163.6MB. Free memory was 113.5MB in the beginning and 103.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 01:43:46,830 INFO L158 Benchmark]: TraceAbstraction took 10942.57ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 102.6MB in the beginning and 151.8MB in the end (delta: -49.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:43:46,831 INFO L158 Benchmark]: Witness Printer took 54.99ms. Allocated memory is still 197.1MB. Free memory was 151.8MB in the beginning and 146.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-02-16 01:43:46,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.18ms. Allocated memory is still 163.6MB. Free memory was 126.8MB in the beginning and 116.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.40ms. Allocated memory is still 163.6MB. Free memory was 116.2MB in the beginning and 114.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.63ms. Allocated memory is still 163.6MB. Free memory was 114.7MB in the beginning and 113.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.19ms. Allocated memory is still 163.6MB. Free memory was 113.5MB in the beginning and 103.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10942.57ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 102.6MB in the beginning and 151.8MB in the end (delta: -49.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 54.99ms. Allocated memory is still 197.1MB. Free memory was 151.8MB in the beginning and 146.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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=0, X=37, Y=2, y=0] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=-33, 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=1, v=-33, x=0, X=37, x=0, x=0, 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=37, x=0, x=0, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=1, v=-33, x=0, x=0, x=0, X=37, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=1, v=-29, x=0, x=0, x=0, X=37, Y=2, y=0] [L45] x++ VAL [counter=1, v=-29, x=0, X=37, x=0, x=1, Y=2, y=0] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-29, x=0, X=37, x=0, x=1, 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=1, x=2, X=37, x=0, Y=2, y=0] [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=37, x=2, x=1, x=0, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=2, v=-29, x=1, X=37, x=0, x=2, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=2, v=-25, x=1, x=0, x=2, X=37, Y=2, y=0] [L45] x++ VAL [counter=2, v=-25, x=2, x=2, x=0, X=37, Y=2, y=0] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=-25, x=0, x=2, X=37, x=2, Y=2, y=0] [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=4, X=37, x=2, Y=2, y=0] [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=2, X=37, x=0, x=4, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=3, v=-25, x=2, X=37, x=4, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=3, v=-21, x=0, x=2, x=4, X=37, Y=2, y=0] [L45] x++ VAL [counter=3, v=-21, x=0, x=3, x=4, X=37, Y=2, y=0] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-21, X=37, x=3, x=0, x=4, 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=3, x=0, x=6, 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=0, x=3, X=37, x=6, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=4, v=-21, x=6, x=3, X=37, x=0, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=4, v=-17, x=0, x=6, X=37, x=3, y=0, Y=2] [L45] x++ VAL [counter=4, v=-17, X=37, x=0, x=6, x=4, y=0, Y=2] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=-17, x=4, 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=5, v=-17, X=37, x=4, x=0, x=8, y=0, Y=2] [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=8, X=37, x=4, x=0, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=5, v=-17, x=4, x=8, x=0, X=37, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=5, v=-13, X=37, x=4, x=8, x=0, y=0, Y=2] [L45] x++ VAL [counter=5, v=-13, x=0, x=8, X=37, x=5, y=0, Y=2] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-13, X=37, x=0, x=5, x=8, 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=0, X=37, x=10, x=5, Y=2, y=0] [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=37, x=10, x=5, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=6, v=-13, x=10, x=0, x=5, X=37, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=6, v=-9, x=10, X=37, x=5, x=0, y=0, Y=2] [L45] x++ VAL [counter=6, v=-9, X=37, x=0, x=10, x=6, y=0, Y=2] [L31] EXPR counter++ VAL [counter=7, counter++=6, v=-9, X=37, x=6, x=0, x=10, 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=37, x=0, x=12, x=6, y=0, Y=2] [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=6, X=37, x=0, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=7, v=-9, X=37, x=12, x=0, x=6, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=7, v=-5, x=0, x=6, x=12, X=37, Y=2, y=0] [L45] x++ VAL [counter=7, v=-5, x=7, X=37, x=0, x=12, Y=2, y=0] [L31] EXPR counter++ VAL [counter=8, counter++=7, v=-5, x=0, X=37, x=7, x=12, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=8, v=-5, X=37, x=7, x=14, x=0, Y=2, y=0] [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=0, x=7, x=14, X=37, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=8, v=-5, x=7, x=14, x=0, X=37, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=8, v=-1, x=0, X=37, x=7, x=14, Y=2, y=0] [L45] x++ VAL [counter=8, v=-1, x=8, X=37, x=0, x=14, Y=2, y=0] [L31] EXPR counter++ VAL [counter=9, counter++=8, v=-1, x=0, x=8, x=14, 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=9, v=-1, x=0, x=8, x=16, X=37, 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=0, X=37, x=8, x=16, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=9, v=-1, x=8, x=0, X=37, x=16, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=9, v=3, x=8, x=0, X=37, x=16, Y=2, y=0] [L45] x++ VAL [counter=9, v=3, x=16, x=9, x=0, X=37, y=0, Y=2] [L31] EXPR counter++ VAL [counter=10, counter++=9, v=3, x=16, x=0, X=37, x=9, 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=18, x=9, 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=9, X=37, x=0, x=18, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=10, v=3, X=37, x=0, x=9, x=18, Y=2, y=0] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=10, v=-67, x=9, x=0, x=18, X=37, Y=2, y=1] [L45] x++ VAL [counter=10, v=-67, x=0, x=10, x=18, X=37, y=1, Y=2] [L31] EXPR counter++ VAL [counter=11, counter++=10, v=-67, X=37, x=10, x=0, x=18, Y=2, y=1] [L31] COND FALSE !(counter++<10) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=11, v=-67, x=10, x=20, x=10, X=37, Y=2, y=1] [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: 10.8s, 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, 1.4s 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, 5.5s InterpolantComputationTime, 337 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 437 ConstructedInterpolants, 0 QuantifiedInterpolants, 3986 SizeOfPredicates, 34 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! [2023-02-16 01:43:46,855 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