./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.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 8627cbce136f39d723fc0eaadf7d8371bf261a07ec5ac59da2e79df34069083d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:25:31,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:25:31,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:25:31,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:25:31,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:25:31,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:25:31,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:25:31,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:25:31,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:25:31,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:25:31,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:25:31,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:25:31,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:25:31,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:25:31,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:25:31,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:25:31,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:25:31,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:25:31,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:25:31,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:25:31,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:25:31,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:25:31,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:25:31,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:25:31,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:25:31,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:25:31,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:25:31,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:25:31,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:25:31,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:25:31,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:25:31,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:25:31,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:25:31,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:25:31,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:25:31,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:25:31,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:25:31,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:25:31,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:25:31,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:25:31,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:25:31,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:25:31,513 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:25:31,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:25:31,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:25:31,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:25:31,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:25:31,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:25:31,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:25:31,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:25:31,517 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:25:31,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:25:31,518 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:25:31,518 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:25:31,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:25:31,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:25:31,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:25:31,519 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:25:31,519 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:25:31,519 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:25:31,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:25:31,519 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:25:31,520 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:25:31,520 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:25:31,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:25:31,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:25:31,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:25:31,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:25:31,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:25:31,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:25:31,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:25:31,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:25:31,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:25:31,522 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:25:31,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:25:31,522 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:25:31,523 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8627cbce136f39d723fc0eaadf7d8371bf261a07ec5ac59da2e79df34069083d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:25:31,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:25:31,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:25:31,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:25:31,847 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:25:31,847 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:25:31,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2023-09-01 00:25:33,062 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:25:33,350 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:25:33,351 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2023-09-01 00:25:33,362 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eca5197b2/0e5a673882bb40198f3a5a1b95778a5d/FLAGc6db0bcc3 [2023-09-01 00:25:33,380 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eca5197b2/0e5a673882bb40198f3a5a1b95778a5d [2023-09-01 00:25:33,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:25:33,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:25:33,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:25:33,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:25:33,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:25:33,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ecf598e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33, skipping insertion in model container [2023-09-01 00:25:33,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:25:33,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:25:33,610 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i[1105,1118] [2023-09-01 00:25:33,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:25:33,784 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:25:33,795 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i[1105,1118] [2023-09-01 00:25:33,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:25:33,883 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:25:33,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33 WrapperNode [2023-09-01 00:25:33,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:25:33,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:25:33,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:25:33,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:25:33,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,943 INFO L138 Inliner]: procedures = 162, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2023-09-01 00:25:33,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:25:33,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:25:33,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:25:33,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:25:33,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,974 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:25:33,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:25:33,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:25:33,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:25:33,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33" (1/1) ... [2023-09-01 00:25:33,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:25:34,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:25:34,014 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) [2023-09-01 00:25:34,032 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 [2023-09-01 00:25:34,046 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-09-01 00:25:34,046 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-09-01 00:25:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:25:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:25:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:25:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:25:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:25:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:25:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:25:34,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:25:34,048 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:25:34,159 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:25:34,161 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:25:34,358 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:25:34,366 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:25:34,366 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-09-01 00:25:34,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:25:34 BoogieIcfgContainer [2023-09-01 00:25:34,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:25:34,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:25:34,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:25:34,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:25:34,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:25:33" (1/3) ... [2023-09-01 00:25:34,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a6d4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:25:34, skipping insertion in model container [2023-09-01 00:25:34,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:33" (2/3) ... [2023-09-01 00:25:34,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a6d4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:25:34, skipping insertion in model container [2023-09-01 00:25:34,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:25:34" (3/3) ... [2023-09-01 00:25:34,379 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_52-refine-protected-loop2-small_true.i [2023-09-01 00:25:34,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:25:34,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-09-01 00:25:34,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:25:34,451 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:25:34,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 73 transitions, 151 flow [2023-09-01 00:25:34,509 INFO L130 PetriNetUnfolder]: 4/72 cut-off events. [2023-09-01 00:25:34,510 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:25:34,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 72 events. 4/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-09-01 00:25:34,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 73 transitions, 151 flow [2023-09-01 00:25:34,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 72 transitions, 147 flow [2023-09-01 00:25:34,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:25:34,527 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 72 transitions, 147 flow [2023-09-01 00:25:34,530 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 72 transitions, 147 flow [2023-09-01 00:25:34,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 72 transitions, 147 flow [2023-09-01 00:25:34,546 INFO L130 PetriNetUnfolder]: 4/72 cut-off events. [2023-09-01 00:25:34,546 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:25:34,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 72 events. 4/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-09-01 00:25:34,547 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-09-01 00:25:37,692 INFO L134 LiptonReduction]: Checked pairs total: 398 [2023-09-01 00:25:37,692 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-09-01 00:25:37,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 00:25:37,709 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;@2d05b037, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:25:37,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-09-01 00:25:37,711 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-09-01 00:25:37,711 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:25:37,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:25:37,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 00:25:37,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-09-01 00:25:37,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:25:37,716 INFO L85 PathProgramCache]: Analyzing trace with hash 300, now seen corresponding path program 1 times [2023-09-01 00:25:37,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:25:37,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729816117] [2023-09-01 00:25:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:25:37,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:25:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:25:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:25:37,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:25:37,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729816117] [2023-09-01 00:25:37,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729816117] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:25:37,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:25:37,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 00:25:37,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178488090] [2023-09-01 00:25:37,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:25:37,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 00:25:37,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:25:37,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 00:25:37,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 00:25:37,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 152 [2023-09-01 00:25:37,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 10 transitions, 23 flow. Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 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) [2023-09-01 00:25:37,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:25:37,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 152 [2023-09-01 00:25:37,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:25:37,867 INFO L130 PetriNetUnfolder]: 3/10 cut-off events. [2023-09-01 00:25:37,868 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:25:37,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 10 events. 3/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 15. Up to 10 conditions per place. [2023-09-01 00:25:37,869 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 4 selfloop transitions, 0 changer transitions 1/6 dead transitions. [2023-09-01 00:25:37,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 25 flow [2023-09-01 00:25:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 00:25:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 00:25:37,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 145 transitions. [2023-09-01 00:25:37,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2023-09-01 00:25:37,881 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 145 transitions. [2023-09-01 00:25:37,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 145 transitions. [2023-09-01 00:25:37,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:25:37,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 145 transitions. [2023-09-01 00:25:37,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 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) [2023-09-01 00:25:37,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2023-09-01 00:25:37,891 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2023-09-01 00:25:37,893 INFO L175 Difference]: Start difference. First operand has 13 places, 10 transitions, 23 flow. Second operand 2 states and 145 transitions. [2023-09-01 00:25:37,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 25 flow [2023-09-01 00:25:37,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 6 transitions, 24 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:25:37,896 INFO L231 Difference]: Finished difference. Result has 9 places, 5 transitions, 12 flow [2023-09-01 00:25:37,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=12, PETRI_PLACES=9, PETRI_TRANSITIONS=5} [2023-09-01 00:25:37,901 INFO L281 CegarLoopForPetriNet]: 13 programPoint places, -4 predicate places. [2023-09-01 00:25:37,901 INFO L495 AbstractCegarLoop]: Abstraction has has 9 places, 5 transitions, 12 flow [2023-09-01 00:25:37,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 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) [2023-09-01 00:25:37,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:25:37,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:25:37,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:25:37,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-09-01 00:25:37,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:25:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash 295465, now seen corresponding path program 1 times [2023-09-01 00:25:37,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:25:37,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15915725] [2023-09-01 00:25:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:25:37,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:25:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:25:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:25:38,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:25:38,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15915725] [2023-09-01 00:25:38,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15915725] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:25:38,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:25:38,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:25:38,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680804102] [2023-09-01 00:25:38,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:25:38,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:25:38,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:25:38,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:25:38,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:25:38,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 152 [2023-09-01 00:25:38,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 5 transitions, 12 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2023-09-01 00:25:38,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:25:38,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 152 [2023-09-01 00:25:38,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:25:38,171 INFO L130 PetriNetUnfolder]: 1/4 cut-off events. [2023-09-01 00:25:38,172 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:25:38,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12 conditions, 4 events. 1/4 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/5 useless extension candidates. Maximal degree in co-relation 9. Up to 3 conditions per place. [2023-09-01 00:25:38,172 INFO L137 encePairwiseOnDemand]: 150/152 looper letters, 0 selfloop transitions, 0 changer transitions 4/4 dead transitions. [2023-09-01 00:25:38,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 4 transitions, 16 flow [2023-09-01 00:25:38,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:25:38,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:25:38,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2023-09-01 00:25:38,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2023-09-01 00:25:38,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2023-09-01 00:25:38,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2023-09-01 00:25:38,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:25:38,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2023-09-01 00:25:38,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2023-09-01 00:25:38,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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) [2023-09-01 00:25:38,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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) [2023-09-01 00:25:38,179 INFO L175 Difference]: Start difference. First operand has 9 places, 5 transitions, 12 flow. Second operand 3 states and 196 transitions. [2023-09-01 00:25:38,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 4 transitions, 16 flow [2023-09-01 00:25:38,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 4 transitions, 16 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 00:25:38,180 INFO L231 Difference]: Finished difference. Result has 9 places, 0 transitions, 0 flow [2023-09-01 00:25:38,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=10, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=9, PETRI_TRANSITIONS=0} [2023-09-01 00:25:38,181 INFO L281 CegarLoopForPetriNet]: 13 programPoint places, -4 predicate places. [2023-09-01 00:25:38,181 INFO L495 AbstractCegarLoop]: Abstraction has has 9 places, 0 transitions, 0 flow [2023-09-01 00:25:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2023-09-01 00:25:38,183 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-09-01 00:25:38,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-09-01 00:25:38,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2023-09-01 00:25:38,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-09-01 00:25:38,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-09-01 00:25:38,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-09-01 00:25:38,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:25:38,185 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-09-01 00:25:38,190 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 00:25:38,190 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 00:25:38,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:25:38 BasicIcfg [2023-09-01 00:25:38,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 00:25:38,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 00:25:38,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 00:25:38,195 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 00:25:38,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:25:34" (3/4) ... [2023-09-01 00:25:38,198 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 00:25:38,202 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2023-09-01 00:25:38,205 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 00:25:38,206 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-09-01 00:25:38,206 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 00:25:38,206 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 00:25:38,232 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 00:25:38,232 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 00:25:38,233 INFO L158 Benchmark]: Toolchain (without parser) took 4848.52ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 44.0MB in the beginning and 50.0MB in the end (delta: -6.0MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2023-09-01 00:25:38,233 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory is still 32.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:25:38,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.67ms. Allocated memory is still 67.1MB. Free memory was 43.8MB in the beginning and 41.5MB in the end (delta: 2.2MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2023-09-01 00:25:38,234 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.14ms. Allocated memory is still 67.1MB. Free memory was 41.5MB in the beginning and 39.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:25:38,234 INFO L158 Benchmark]: Boogie Preprocessor took 39.91ms. Allocated memory is still 67.1MB. Free memory was 39.5MB in the beginning and 37.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:25:38,234 INFO L158 Benchmark]: RCFGBuilder took 385.78ms. Allocated memory is still 67.1MB. Free memory was 37.9MB in the beginning and 43.1MB in the end (delta: -5.2MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2023-09-01 00:25:38,235 INFO L158 Benchmark]: TraceAbstraction took 3821.72ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.5MB in the beginning and 52.7MB in the end (delta: -10.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 00:25:38,235 INFO L158 Benchmark]: Witness Printer took 37.37ms. Allocated memory is still 81.8MB. Free memory was 52.7MB in the beginning and 50.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 00:25:38,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory is still 32.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 498.67ms. Allocated memory is still 67.1MB. Free memory was 43.8MB in the beginning and 41.5MB in the end (delta: 2.2MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.14ms. Allocated memory is still 67.1MB. Free memory was 41.5MB in the beginning and 39.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.91ms. Allocated memory is still 67.1MB. Free memory was 39.5MB in the beginning and 37.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 385.78ms. Allocated memory is still 67.1MB. Free memory was 37.9MB in the beginning and 43.1MB in the end (delta: -5.2MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3821.72ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.5MB in the beginning and 52.7MB in the end (delta: -10.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Witness Printer took 37.37ms. Allocated memory is still 81.8MB. Free memory was 52.7MB in the beginning and 50.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 72 PlacesBefore, 13 PlacesAfterwards, 72 TransitionsBefore, 10 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 79 TotalNumberOfCompositions, 398 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 398, independent: 398, independent conditional: 0, independent unconditional: 398, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 279, independent: 279, independent conditional: 0, independent unconditional: 279, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 398, independent: 119, independent conditional: 0, independent unconditional: 119, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 279, unknown conditional: 0, unknown unconditional: 279] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 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: 699]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 16 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 00:25:38,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE