./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/matrix-2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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/loops/matrix-2-2.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 29c60028fe77c919c85938e022adc26e4c09a5802df35e9dae1aea434a543980 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-13 23:49:33,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-13 23:49:33,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-13 23:49:33,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-13 23:49:33,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-13 23:49:33,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-13 23:49:33,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-13 23:49:33,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-13 23:49:33,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-13 23:49:33,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-13 23:49:33,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-13 23:49:33,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-13 23:49:33,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-13 23:49:33,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-13 23:49:33,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-13 23:49:33,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-13 23:49:33,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-13 23:49:33,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-13 23:49:33,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-13 23:49:33,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-13 23:49:33,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-13 23:49:33,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-13 23:49:33,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-13 23:49:33,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-13 23:49:33,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-13 23:49:33,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-13 23:49:33,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-13 23:49:33,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-13 23:49:33,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-13 23:49:33,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-13 23:49:33,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-13 23:49:33,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-13 23:49:33,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-13 23:49:33,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-13 23:49:33,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-13 23:49:33,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-13 23:49:33,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-13 23:49:33,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-13 23:49:33,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-13 23:49:33,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-13 23:49:33,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-13 23:49:33,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-13 23:49:33,243 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-13 23:49:33,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-13 23:49:33,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-13 23:49:33,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-13 23:49:33,245 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-13 23:49:33,245 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-13 23:49:33,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-13 23:49:33,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-13 23:49:33,246 INFO L138 SettingsManager]: * Use SBE=true [2023-02-13 23:49:33,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-13 23:49:33,247 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-13 23:49:33,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-13 23:49:33,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-13 23:49:33,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-13 23:49:33,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-13 23:49:33,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-13 23:49:33,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-13 23:49:33,248 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-13 23:49:33,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-13 23:49:33,248 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-13 23:49:33,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-13 23:49:33,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-13 23:49:33,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-13 23:49:33,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-13 23:49:33,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 23:49:33,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-13 23:49:33,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-13 23:49:33,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-13 23:49:33,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-13 23:49:33,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-13 23:49:33,250 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-13 23:49:33,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-13 23:49:33,250 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-13 23:49:33,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-13 23:49:33,250 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-13 23:49:33,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29c60028fe77c919c85938e022adc26e4c09a5802df35e9dae1aea434a543980 [2023-02-13 23:49:33,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-13 23:49:33,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-13 23:49:33,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-13 23:49:33,426 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-13 23:49:33,427 INFO L275 PluginConnector]: CDTParser initialized [2023-02-13 23:49:33,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-2-2.c [2023-02-13 23:49:34,331 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-13 23:49:34,627 INFO L351 CDTParser]: Found 1 translation units. [2023-02-13 23:49:34,628 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-2-2.c [2023-02-13 23:49:34,633 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8933cbe88/2203e262c2bc4847b40e4957852e517e/FLAG62cc74415 [2023-02-13 23:49:34,649 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8933cbe88/2203e262c2bc4847b40e4957852e517e [2023-02-13 23:49:34,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-13 23:49:34,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-13 23:49:34,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-13 23:49:34,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-13 23:49:34,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-13 23:49:34,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28efd8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34, skipping insertion in model container [2023-02-13 23:49:34,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-13 23:49:34,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-13 23:49:34,777 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/loops/matrix-2-2.c[322,335] [2023-02-13 23:49:34,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:49:34,803 INFO L203 MainTranslator]: Completed pre-run [2023-02-13 23:49:34,811 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/loops/matrix-2-2.c[322,335] [2023-02-13 23:49:34,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:49:34,830 INFO L208 MainTranslator]: Completed translation [2023-02-13 23:49:34,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34 WrapperNode [2023-02-13 23:49:34,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-13 23:49:34,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-13 23:49:34,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-13 23:49:34,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-13 23:49:34,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,852 INFO L138 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-02-13 23:49:34,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-13 23:49:34,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-13 23:49:34,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-13 23:49:34,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-13 23:49:34,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,867 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-13 23:49:34,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-13 23:49:34,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-13 23:49:34,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-13 23:49:34,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34" (1/1) ... [2023-02-13 23:49:34,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 23:49:34,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:49:34,894 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) [2023-02-13 23:49:34,896 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 [2023-02-13 23:49:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-13 23:49:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-13 23:49:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-13 23:49:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-13 23:49:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-13 23:49:34,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-13 23:49:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-13 23:49:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-13 23:49:34,961 INFO L235 CfgBuilder]: Building ICFG [2023-02-13 23:49:34,962 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-13 23:49:35,074 INFO L276 CfgBuilder]: Performing block encoding [2023-02-13 23:49:35,078 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-13 23:49:35,078 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-13 23:49:35,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:49:35 BoogieIcfgContainer [2023-02-13 23:49:35,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-13 23:49:35,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-13 23:49:35,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-13 23:49:35,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-13 23:49:35,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.02 11:49:34" (1/3) ... [2023-02-13 23:49:35,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdb8ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 11:49:35, skipping insertion in model container [2023-02-13 23:49:35,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:49:34" (2/3) ... [2023-02-13 23:49:35,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdb8ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 11:49:35, skipping insertion in model container [2023-02-13 23:49:35,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:49:35" (3/3) ... [2023-02-13 23:49:35,086 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix-2-2.c [2023-02-13 23:49:35,097 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-13 23:49:35,097 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-13 23:49:35,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-13 23:49:35,131 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;@35be91f0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-13 23:49:35,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-13 23:49:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:49:35,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-13 23:49:35,138 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:49:35,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:49:35,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:49:35,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:49:35,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1978865680, now seen corresponding path program 1 times [2023-02-13 23:49:35,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:49:35,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229213651] [2023-02-13 23:49:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:49:35,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:49:35,212 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 23:49:35,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095190307] [2023-02-13 23:49:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:49:35,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:49:35,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:49:35,227 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) [2023-02-13 23:49:35,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-13 23:49:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:49:35,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-13 23:49:35,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:49:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:49:35,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 23:49:35,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:49:35,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229213651] [2023-02-13 23:49:35,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 23:49:35,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095190307] [2023-02-13 23:49:35,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095190307] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:49:35,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:49:35,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-13 23:49:35,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490277022] [2023-02-13 23:49:35,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:49:35,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-13 23:49:35,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:49:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-13 23:49:35,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-13 23:49:35,395 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:49:35,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:49:35,408 INFO L93 Difference]: Finished difference Result 39 states and 58 transitions. [2023-02-13 23:49:35,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-13 23:49:35,409 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-13 23:49:35,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:49:35,424 INFO L225 Difference]: With dead ends: 39 [2023-02-13 23:49:35,424 INFO L226 Difference]: Without dead ends: 17 [2023-02-13 23:49:35,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-13 23:49:35,432 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:49:35,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:49:35,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-13 23:49:35,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-13 23:49:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:49:35,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-02-13 23:49:35,456 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2023-02-13 23:49:35,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:49:35,456 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-02-13 23:49:35,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:49:35,457 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-02-13 23:49:35,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-13 23:49:35,458 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:49:35,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:49:35,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-13 23:49:35,662 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 [2023-02-13 23:49:35,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:49:35,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:49:35,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1320395207, now seen corresponding path program 1 times [2023-02-13 23:49:35,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:49:35,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117577606] [2023-02-13 23:49:35,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:49:35,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:49:35,675 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 23:49:35,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317465986] [2023-02-13 23:49:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:49:35,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:49:35,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:49:35,677 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) [2023-02-13 23:49:35,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-13 23:49:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:49:35,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-13 23:49:35,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:49:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:49:35,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 23:49:35,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:49:35,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117577606] [2023-02-13 23:49:35,794 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 23:49:35,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317465986] [2023-02-13 23:49:35,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317465986] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:49:35,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:49:35,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-13 23:49:35,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465759773] [2023-02-13 23:49:35,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:49:35,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-13 23:49:35,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:49:35,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-13 23:49:35,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-13 23:49:35,797 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:49:35,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:49:35,837 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-02-13 23:49:35,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-13 23:49:35,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-13 23:49:35,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:49:35,838 INFO L225 Difference]: With dead ends: 40 [2023-02-13 23:49:35,838 INFO L226 Difference]: Without dead ends: 30 [2023-02-13 23:49:35,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-13 23:49:35,840 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:49:35,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 34 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:49:35,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-13 23:49:35,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 18. [2023-02-13 23:49:35,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:49:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-02-13 23:49:35,844 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 9 [2023-02-13 23:49:35,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:49:35,844 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-02-13 23:49:35,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:49:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-02-13 23:49:35,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-13 23:49:35,845 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:49:35,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:49:35,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-13 23:49:36,049 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 [2023-02-13 23:49:36,050 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:49:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:49:36,050 INFO L85 PathProgramCache]: Analyzing trace with hash 448383483, now seen corresponding path program 1 times [2023-02-13 23:49:36,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:49:36,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444183272] [2023-02-13 23:49:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:49:36,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:49:36,066 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 23:49:36,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366544197] [2023-02-13 23:49:36,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:49:36,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:49:36,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:49:36,069 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) [2023-02-13 23:49:36,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-13 23:49:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:49:36,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-13 23:49:36,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:49:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:49:36,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 23:49:36,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:49:36,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444183272] [2023-02-13 23:49:36,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 23:49:36,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366544197] [2023-02-13 23:49:36,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366544197] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:49:36,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:49:36,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-13 23:49:36,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782392605] [2023-02-13 23:49:36,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:49:36,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-13 23:49:36,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:49:36,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-13 23:49:36,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-13 23:49:36,179 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:49:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:49:36,209 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2023-02-13 23:49:36,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-13 23:49:36,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-13 23:49:36,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:49:36,210 INFO L225 Difference]: With dead ends: 48 [2023-02-13 23:49:36,210 INFO L226 Difference]: Without dead ends: 27 [2023-02-13 23:49:36,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-13 23:49:36,212 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:49:36,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 37 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:49:36,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-13 23:49:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2023-02-13 23:49:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:49:36,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-02-13 23:49:36,215 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2023-02-13 23:49:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:49:36,215 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-02-13 23:49:36,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:49:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-02-13 23:49:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-13 23:49:36,216 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:49:36,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:49:36,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-13 23:49:36,421 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 [2023-02-13 23:49:36,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:49:36,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:49:36,422 INFO L85 PathProgramCache]: Analyzing trace with hash -759520544, now seen corresponding path program 1 times [2023-02-13 23:49:36,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:49:36,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283209849] [2023-02-13 23:49:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:49:36,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:49:36,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 23:49:36,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213299832] [2023-02-13 23:49:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:49:36,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:49:36,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:49:36,432 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) [2023-02-13 23:49:36,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-13 23:49:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 23:49:36,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 23:49:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 23:49:36,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 23:49:36,553 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-13 23:49:36,555 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-13 23:49:36,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-13 23:49:36,761 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 [2023-02-13 23:49:36,765 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-02-13 23:49:36,768 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-13 23:49:36,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.02 11:49:36 BoogieIcfgContainer [2023-02-13 23:49:36,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-13 23:49:36,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-13 23:49:36,795 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-13 23:49:36,795 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-13 23:49:36,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:49:35" (3/4) ... [2023-02-13 23:49:36,797 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-13 23:49:36,876 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-13 23:49:36,876 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-13 23:49:36,876 INFO L158 Benchmark]: Toolchain (without parser) took 2224.11ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 92.3MB in the beginning and 82.1MB in the end (delta: 10.2MB). Peak memory consumption was 35.4MB. Max. memory is 16.1GB. [2023-02-13 23:49:36,879 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 102.8MB. Free memory is still 54.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-13 23:49:36,879 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.54ms. Allocated memory is still 123.7MB. Free memory was 92.3MB in the beginning and 81.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-13 23:49:36,879 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.33ms. Allocated memory is still 123.7MB. Free memory was 81.8MB in the beginning and 80.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-13 23:49:36,879 INFO L158 Benchmark]: Boogie Preprocessor took 20.63ms. Allocated memory is still 123.7MB. Free memory was 80.1MB in the beginning and 78.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-13 23:49:36,880 INFO L158 Benchmark]: RCFGBuilder took 206.14ms. Allocated memory is still 123.7MB. Free memory was 78.9MB in the beginning and 67.2MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-13 23:49:36,880 INFO L158 Benchmark]: TraceAbstraction took 1711.46ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 66.3MB in the beginning and 84.2MB in the end (delta: -17.9MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2023-02-13 23:49:36,880 INFO L158 Benchmark]: Witness Printer took 81.34ms. Allocated memory is still 148.9MB. Free memory was 84.2MB in the beginning and 82.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-13 23:49:36,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 102.8MB. Free memory is still 54.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.54ms. Allocated memory is still 123.7MB. Free memory was 92.3MB in the beginning and 81.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.33ms. Allocated memory is still 123.7MB. Free memory was 81.8MB in the beginning and 80.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.63ms. Allocated memory is still 123.7MB. Free memory was 80.1MB in the beginning and 78.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 206.14ms. Allocated memory is still 123.7MB. Free memory was 78.9MB in the beginning and 67.2MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1711.46ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 66.3MB in the beginning and 84.2MB in the end (delta: -17.9MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Witness Printer took 81.34ms. Allocated memory is still 148.9MB. Free memory was 84.2MB in the beginning and 82.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L17] unsigned int N_COL=__VERIFIER_nondet_uint(); [L18] COND FALSE !(N_LIN >= 4000000000 / sizeof(int) || N_COL >= 4000000000 / sizeof(int)) [L21] unsigned int j,k; [L22] int matriz[N_COL][N_LIN], maior; [L24] maior = __VERIFIER_nondet_int() [L25] j=0 VAL [j=0, maior=-1, matriz={4:0}, N_COL=1, N_LIN=1] [L25] COND TRUE jmaior [L31] EXPR matriz[j][k] [L31] maior = matriz[j][k] [L26] k++ VAL [j=0, k=1, maior=0, matriz={4:0}, N_COL=1, N_LIN=1] [L26] COND FALSE !(k