./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eba94063d18105b44b9503ed48a138d00b9b850cd51aae19571aab60c15e268e --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 01:38:47,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 01:38:47,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 01:38:47,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 01:38:47,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 01:38:47,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 01:38:47,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 01:38:47,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 01:38:47,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 01:38:47,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 01:38:47,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 01:38:47,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 01:38:47,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 01:38:47,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 01:38:47,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 01:38:47,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 01:38:47,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 01:38:47,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 01:38:47,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 01:38:47,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 01:38:47,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 01:38:47,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 01:38:47,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 01:38:47,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 01:38:47,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 01:38:47,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 01:38:47,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 01:38:47,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 01:38:47,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 01:38:47,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 01:38:47,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 01:38:47,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 01:38:47,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 01:38:47,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 01:38:47,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 01:38:47,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 01:38:47,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 01:38:47,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 01:38:47,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 01:38:47,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 01:38:47,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 01:38:47,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-14 01:38:47,298 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 01:38:47,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 01:38:47,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 01:38:47,299 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 01:38:47,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 01:38:47,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 01:38:47,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 01:38:47,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 01:38:47,301 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 01:38:47,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 01:38:47,302 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 01:38:47,302 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 01:38:47,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 01:38:47,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 01:38:47,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 01:38:47,303 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 01:38:47,303 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 01:38:47,303 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 01:38:47,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 01:38:47,304 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 01:38:47,304 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 01:38:47,304 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 01:38:47,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 01:38:47,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 01:38:47,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 01:38:47,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 01:38:47,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 01:38:47,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 01:38:47,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 01:38:47,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 01:38:47,306 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 01:38:47,306 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 01:38:47,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 01:38:47,312 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 01:38:47,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eba94063d18105b44b9503ed48a138d00b9b850cd51aae19571aab60c15e268e [2023-02-14 01:38:47,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 01:38:47,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 01:38:47,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 01:38:47,546 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 01:38:47,546 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 01:38:47,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2023-02-14 01:38:48,722 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 01:38:48,938 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 01:38:48,939 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2023-02-14 01:38:48,949 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228e0e2fc/b19dcc00e5cf40e49f0c994e9804ecd9/FLAG3b7dd4fe8 [2023-02-14 01:38:48,965 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228e0e2fc/b19dcc00e5cf40e49f0c994e9804ecd9 [2023-02-14 01:38:48,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 01:38:48,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 01:38:48,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 01:38:48,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 01:38:48,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 01:38:48,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:38:48" (1/1) ... [2023-02-14 01:38:48,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348d0a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:48, skipping insertion in model container [2023-02-14 01:38:48,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:38:48" (1/1) ... [2023-02-14 01:38:48,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 01:38:49,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 01:38:49,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 01:38:49,272 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 01:38:49,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 01:38:49,335 INFO L208 MainTranslator]: Completed translation [2023-02-14 01:38:49,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49 WrapperNode [2023-02-14 01:38:49,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 01:38:49,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 01:38:49,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 01:38:49,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 01:38:49,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49" (1/1) ... [2023-02-14 01:38:49,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49" (1/1) ... [2023-02-14 01:38:49,376 INFO L138 Inliner]: procedures = 116, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2023-02-14 01:38:49,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 01:38:49,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 01:38:49,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 01:38:49,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 01:38:49,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49" (1/1) ... [2023-02-14 01:38:49,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49" (1/1) ... [2023-02-14 01:38:49,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49" (1/1) ... [2023-02-14 01:38:49,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49" (1/1) ... [2023-02-14 01:38:49,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49" (1/1) ... [2023-02-14 01:38:49,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49" (1/1) ... [2023-02-14 01:38:49,418 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49" (1/1) ... [2023-02-14 01:38:49,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49" (1/1) ... [2023-02-14 01:38:49,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 01:38:49,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 01:38:49,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 01:38:49,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 01:38:49,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49" (1/1) ... [2023-02-14 01:38:49,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 01:38:49,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:38:49,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-14 01:38:49,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-14 01:38:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 01:38:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 01:38:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 01:38:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 01:38:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 01:38:49,623 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 01:38:49,625 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 01:38:49,791 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 01:38:49,796 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 01:38:49,799 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 01:38:49,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:38:49 BoogieIcfgContainer [2023-02-14 01:38:49,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 01:38:49,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 01:38:49,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 01:38:49,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 01:38:49,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 01:38:48" (1/3) ... [2023-02-14 01:38:49,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77731527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:38:49, skipping insertion in model container [2023-02-14 01:38:49,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:38:49" (2/3) ... [2023-02-14 01:38:49,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77731527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:38:49, skipping insertion in model container [2023-02-14 01:38:49,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:38:49" (3/3) ... [2023-02-14 01:38:49,811 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemset-alloca-1.i [2023-02-14 01:38:49,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 01:38:49,829 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-14 01:38:49,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 01:38:49,884 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@77515801, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 01:38:49,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-14 01:38:49,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 18 states have internal predecessors, (23), 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) [2023-02-14 01:38:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 01:38:49,895 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:38:49,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 01:38:49,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 01:38:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:38:49,926 INFO L85 PathProgramCache]: Analyzing trace with hash 121322254, now seen corresponding path program 1 times [2023-02-14 01:38:49,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:38:49,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004519050] [2023-02-14 01:38:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:38:49,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:38:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:38:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:50,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:38:50,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004519050] [2023-02-14 01:38:50,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004519050] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 01:38:50,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 01:38:50,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 01:38:50,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050043645] [2023-02-14 01:38:50,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 01:38:50,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 01:38:50,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:38:50,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 01:38:50,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-14 01:38:50,509 INFO L87 Difference]: Start difference. First operand has 19 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 18 states have internal predecessors, (23), 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 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-02-14 01:38:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:38:50,645 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2023-02-14 01:38:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 01:38:50,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2023-02-14 01:38:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:38:50,657 INFO L225 Difference]: With dead ends: 36 [2023-02-14 01:38:50,672 INFO L226 Difference]: Without dead ends: 32 [2023-02-14 01:38:50,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-14 01:38:50,678 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 53 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 01:38:50,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 45 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 01:38:50,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-14 01:38:50,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 16. [2023-02-14 01:38:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 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) [2023-02-14 01:38:50,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-02-14 01:38:50,725 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2023-02-14 01:38:50,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:38:50,726 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-02-14 01:38:50,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-02-14 01:38:50,726 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-02-14 01:38:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 01:38:50,732 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:38:50,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 01:38:50,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 01:38:50,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 01:38:50,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:38:50,733 INFO L85 PathProgramCache]: Analyzing trace with hash 121322255, now seen corresponding path program 1 times [2023-02-14 01:38:50,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:38:50,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876899082] [2023-02-14 01:38:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:38:50,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:38:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:38:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:51,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:38:51,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876899082] [2023-02-14 01:38:51,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876899082] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 01:38:51,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 01:38:51,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 01:38:51,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871159786] [2023-02-14 01:38:51,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 01:38:51,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 01:38:51,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:38:51,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 01:38:51,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-14 01:38:51,060 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-02-14 01:38:51,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:38:51,146 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2023-02-14 01:38:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 01:38:51,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2023-02-14 01:38:51,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:38:51,147 INFO L225 Difference]: With dead ends: 31 [2023-02-14 01:38:51,147 INFO L226 Difference]: Without dead ends: 31 [2023-02-14 01:38:51,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-02-14 01:38:51,149 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 01:38:51,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 68 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 01:38:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-14 01:38:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2023-02-14 01:38:51,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.3333333333333333) 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) [2023-02-14 01:38:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-02-14 01:38:51,153 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 8 [2023-02-14 01:38:51,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:38:51,154 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-02-14 01:38:51,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-02-14 01:38:51,154 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-02-14 01:38:51,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 01:38:51,155 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:38:51,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 01:38:51,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 01:38:51,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 01:38:51,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:38:51,156 INFO L85 PathProgramCache]: Analyzing trace with hash 123169297, now seen corresponding path program 1 times [2023-02-14 01:38:51,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:38:51,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550403589] [2023-02-14 01:38:51,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:38:51,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:38:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:38:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:51,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:38:51,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550403589] [2023-02-14 01:38:51,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550403589] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 01:38:51,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 01:38:51,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 01:38:51,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681000883] [2023-02-14 01:38:51,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 01:38:51,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 01:38:51,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:38:51,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 01:38:51,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-14 01:38:51,392 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) [2023-02-14 01:38:51,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:38:51,477 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2023-02-14 01:38:51,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 01:38:51,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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 8 [2023-02-14 01:38:51,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:38:51,479 INFO L225 Difference]: With dead ends: 23 [2023-02-14 01:38:51,479 INFO L226 Difference]: Without dead ends: 23 [2023-02-14 01:38:51,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-02-14 01:38:51,484 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 01:38:51,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 40 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 01:38:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-14 01:38:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2023-02-14 01:38:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.3125) internal successors, (21), 17 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) [2023-02-14 01:38:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-02-14 01:38:51,489 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 8 [2023-02-14 01:38:51,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:38:51,489 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-02-14 01:38:51,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) [2023-02-14 01:38:51,490 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-02-14 01:38:51,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-14 01:38:51,490 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:38:51,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 01:38:51,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 01:38:51,491 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 01:38:51,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:38:51,492 INFO L85 PathProgramCache]: Analyzing trace with hash -533363702, now seen corresponding path program 1 times [2023-02-14 01:38:51,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:38:51,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534751840] [2023-02-14 01:38:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:38:51,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:38:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:38:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:51,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:38:51,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534751840] [2023-02-14 01:38:51,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534751840] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 01:38:51,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 01:38:51,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 01:38:51,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251621477] [2023-02-14 01:38:51,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 01:38:51,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 01:38:51,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:38:51,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 01:38:51,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 01:38:51,572 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2023-02-14 01:38:51,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:38:51,607 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2023-02-14 01:38:51,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 01:38:51,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2023-02-14 01:38:51,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:38:51,609 INFO L225 Difference]: With dead ends: 34 [2023-02-14 01:38:51,609 INFO L226 Difference]: Without dead ends: 34 [2023-02-14 01:38:51,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 01:38:51,618 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 01:38:51,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 55 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 01:38:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-14 01:38:51,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 20. [2023-02-14 01:38:51,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 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) [2023-02-14 01:38:51,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-14 01:38:51,630 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2023-02-14 01:38:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:38:51,631 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-14 01:38:51,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2023-02-14 01:38:51,632 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-14 01:38:51,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-14 01:38:51,633 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:38:51,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 01:38:51,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 01:38:51,633 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 01:38:51,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:38:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash -476105400, now seen corresponding path program 1 times [2023-02-14 01:38:51,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:38:51,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296668832] [2023-02-14 01:38:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:38:51,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:38:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:38:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:51,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:38:51,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296668832] [2023-02-14 01:38:51,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296668832] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 01:38:51,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 01:38:51,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 01:38:51,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903969684] [2023-02-14 01:38:51,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 01:38:51,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 01:38:51,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:38:51,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 01:38:51,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 01:38:51,710 INFO L87 Difference]: Start difference. First operand 20 states and 23 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) [2023-02-14 01:38:51,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:38:51,734 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-02-14 01:38:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 01:38:51,735 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 [2023-02-14 01:38:51,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:38:51,738 INFO L225 Difference]: With dead ends: 22 [2023-02-14 01:38:51,738 INFO L226 Difference]: Without dead ends: 22 [2023-02-14 01:38:51,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-14 01:38:51,741 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 01:38:51,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 29 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 01:38:51,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-14 01:38:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2023-02-14 01:38:51,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 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) [2023-02-14 01:38:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-02-14 01:38:51,747 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2023-02-14 01:38:51,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:38:51,748 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-02-14 01:38:51,749 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) [2023-02-14 01:38:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-02-14 01:38:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-14 01:38:51,752 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:38:51,752 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 01:38:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-14 01:38:51,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 01:38:51,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:38:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash 188498229, now seen corresponding path program 1 times [2023-02-14 01:38:51,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:38:51,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413488957] [2023-02-14 01:38:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:38:51,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:38:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:38:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:51,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:38:51,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413488957] [2023-02-14 01:38:51,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413488957] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 01:38:51,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 01:38:51,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 01:38:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471804412] [2023-02-14 01:38:51,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 01:38:51,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 01:38:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:38:51,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 01:38:51,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 01:38:51,922 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-02-14 01:38:51,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:38:51,961 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2023-02-14 01:38:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 01:38:51,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2023-02-14 01:38:51,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:38:51,962 INFO L225 Difference]: With dead ends: 29 [2023-02-14 01:38:51,963 INFO L226 Difference]: Without dead ends: 29 [2023-02-14 01:38:51,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-14 01:38:51,964 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 01:38:51,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 55 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 01:38:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-14 01:38:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2023-02-14 01:38:51,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 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) [2023-02-14 01:38:51,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-02-14 01:38:51,970 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2023-02-14 01:38:51,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:38:51,971 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-02-14 01:38:51,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-02-14 01:38:51,971 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-02-14 01:38:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-14 01:38:51,972 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:38:51,972 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 01:38:51,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-14 01:38:51,973 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 01:38:51,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:38:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash -204528781, now seen corresponding path program 1 times [2023-02-14 01:38:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:38:51,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243080008] [2023-02-14 01:38:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:38:51,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:38:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:38:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:52,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:38:52,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243080008] [2023-02-14 01:38:52,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243080008] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:38:52,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323738944] [2023-02-14 01:38:52,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:38:52,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:38:52,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:38:52,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 01:38:52,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 01:38:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:38:52,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-14 01:38:52,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:38:52,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 01:38:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:52,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:38:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:53,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323738944] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:38:53,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:38:53,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 24 [2023-02-14 01:38:53,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062415886] [2023-02-14 01:38:53,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:38:53,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-14 01:38:53,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:38:53,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-14 01:38:53,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2023-02-14 01:38:53,272 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 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) [2023-02-14 01:38:53,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:38:53,796 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2023-02-14 01:38:53,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-14 01:38:53,797 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 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 13 [2023-02-14 01:38:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:38:53,797 INFO L225 Difference]: With dead ends: 36 [2023-02-14 01:38:53,797 INFO L226 Difference]: Without dead ends: 36 [2023-02-14 01:38:53,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2023-02-14 01:38:53,798 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 01:38:53,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 125 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 01:38:53,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-14 01:38:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2023-02-14 01:38:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 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) [2023-02-14 01:38:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-02-14 01:38:53,804 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2023-02-14 01:38:53,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:38:53,805 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-02-14 01:38:53,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 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) [2023-02-14 01:38:53,805 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-02-14 01:38:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 01:38:53,806 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:38:53,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 01:38:53,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-14 01:38:54,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:38:54,013 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 01:38:54,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:38:54,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1548436090, now seen corresponding path program 1 times [2023-02-14 01:38:54,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:38:54,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992400153] [2023-02-14 01:38:54,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:38:54,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:38:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:38:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:54,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:38:54,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992400153] [2023-02-14 01:38:54,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992400153] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 01:38:54,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 01:38:54,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 01:38:54,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546290685] [2023-02-14 01:38:54,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 01:38:54,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 01:38:54,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:38:54,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 01:38:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 01:38:54,091 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-02-14 01:38:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:38:54,102 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-02-14 01:38:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 01:38:54,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2023-02-14 01:38:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:38:54,104 INFO L225 Difference]: With dead ends: 29 [2023-02-14 01:38:54,104 INFO L226 Difference]: Without dead ends: 19 [2023-02-14 01:38:54,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 01:38:54,106 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 01:38:54,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 01:38:54,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-14 01:38:54,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-14 01:38:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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) [2023-02-14 01:38:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-02-14 01:38:54,111 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2023-02-14 01:38:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:38:54,112 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-02-14 01:38:54,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-02-14 01:38:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-02-14 01:38:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 01:38:54,113 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:38:54,113 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 01:38:54,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-14 01:38:54,114 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-02-14 01:38:54,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:38:54,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1854015663, now seen corresponding path program 2 times [2023-02-14 01:38:54,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:38:54,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020140511] [2023-02-14 01:38:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:38:54,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:38:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:38:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:54,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:38:54,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020140511] [2023-02-14 01:38:54,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020140511] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:38:54,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770032908] [2023-02-14 01:38:54,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 01:38:54,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:38:54,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:38:54,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 01:38:54,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 01:38:54,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 01:38:54,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 01:38:54,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-14 01:38:54,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:38:54,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-14 01:38:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:54,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:38:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:38:55,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770032908] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:38:55,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:38:55,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-02-14 01:38:55,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598948463] [2023-02-14 01:38:55,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:38:55,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-14 01:38:55,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:38:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-14 01:38:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2023-02-14 01:38:55,384 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 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) [2023-02-14 01:38:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:38:56,011 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2023-02-14 01:38:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-14 01:38:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 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 18 [2023-02-14 01:38:56,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:38:56,012 INFO L225 Difference]: With dead ends: 24 [2023-02-14 01:38:56,012 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 01:38:56,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=266, Invalid=1714, Unknown=0, NotChecked=0, Total=1980 [2023-02-14 01:38:56,014 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 01:38:56,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 116 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 01:38:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 01:38:56,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 01:38:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 01:38:56,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 01:38:56,015 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2023-02-14 01:38:56,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:38:56,015 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 01:38:56,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 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) [2023-02-14 01:38:56,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 01:38:56,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 01:38:56,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2023-02-14 01:38:56,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-02-14 01:38:56,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2023-02-14 01:38:56,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 01:38:56,218 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,SelfDestructingSolverStorable8 [2023-02-14 01:38:56,221 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 01:38:56,223 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 01:38:56,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 01:38:56 BoogieIcfgContainer [2023-02-14 01:38:56,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 01:38:56,230 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 01:38:56,230 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 01:38:56,230 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 01:38:56,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:38:49" (3/4) ... [2023-02-14 01:38:56,233 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 01:38:56,243 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-14 01:38:56,243 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 01:38:56,243 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 01:38:56,244 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 01:38:56,289 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 01:38:56,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 01:38:56,290 INFO L158 Benchmark]: Toolchain (without parser) took 7320.93ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 79.9MB in the beginning and 75.7MB in the end (delta: 4.1MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. [2023-02-14 01:38:56,290 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 127.9MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 01:38:56,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.45ms. Allocated memory is still 127.9MB. Free memory was 79.9MB in the beginning and 64.2MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-14 01:38:56,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.89ms. Allocated memory is still 127.9MB. Free memory was 64.2MB in the beginning and 62.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 01:38:56,291 INFO L158 Benchmark]: Boogie Preprocessor took 50.27ms. Allocated memory is still 127.9MB. Free memory was 62.1MB in the beginning and 61.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 01:38:56,291 INFO L158 Benchmark]: RCFGBuilder took 374.24ms. Allocated memory is still 127.9MB. Free memory was 61.0MB in the beginning and 50.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 01:38:56,291 INFO L158 Benchmark]: TraceAbstraction took 6425.15ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 49.5MB in the beginning and 78.9MB in the end (delta: -29.4MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2023-02-14 01:38:56,292 INFO L158 Benchmark]: Witness Printer took 59.42ms. Allocated memory is still 188.7MB. Free memory was 78.9MB in the beginning and 75.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-14 01:38:56,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 127.9MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.45ms. Allocated memory is still 127.9MB. Free memory was 79.9MB in the beginning and 64.2MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.89ms. Allocated memory is still 127.9MB. Free memory was 64.2MB in the beginning and 62.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.27ms. Allocated memory is still 127.9MB. Free memory was 62.1MB in the beginning and 61.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 374.24ms. Allocated memory is still 127.9MB. Free memory was 61.0MB in the beginning and 50.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6425.15ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 49.5MB in the beginning and 78.9MB in the end (delta: -29.4MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * Witness Printer took 59.42ms. Allocated memory is still 188.7MB. Free memory was 78.9MB in the beginning and 75.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 258 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 258 mSDsluCounter, 559 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 442 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 496 IncrementalHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 117 mSDtfsCounter, 496 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=7, InterpolantAutomatonStates: 70, 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, 9 MinimizatonAttempts, 60 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 1578 SizeOfPredicates, 28 NumberOfNonLiveVariables, 198 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 2/35 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-02-14 01:38:56,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE