./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/04-mutex_04-munge_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/04-mutex_04-munge_nr.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 09d5acb2f81ee0994352651dad5f891cf0af6948836360f3240d2ea1a246e8a6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:13:16,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:13:16,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:13:16,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:13:16,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:13:16,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:13:16,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:13:16,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:13:16,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:13:16,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:13:16,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:13:16,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:13:16,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:13:16,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:13:16,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:13:16,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:13:16,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:13:16,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:13:16,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:13:16,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:13:16,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:13:16,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:13:16,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:13:16,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:13:16,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:13:16,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:13:16,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:13:16,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:13:16,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:13:16,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:13:16,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:13:16,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:13:16,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:13:16,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:13:16,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:13:16,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:13:16,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:13:16,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:13:16,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:13:16,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:13:16,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:13:16,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:13:16,375 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:13:16,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:13:16,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:13:16,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:13:16,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:13:16,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:13:16,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:13:16,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:13:16,379 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:13:16,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:13:16,380 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:13:16,380 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:13:16,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:13:16,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:13:16,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:13:16,381 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:13:16,381 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:13:16,381 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:13:16,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:13:16,382 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:13:16,382 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:13:16,382 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:13:16,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:13:16,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:13:16,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:13:16,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:13:16,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:13:16,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:13:16,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:13:16,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:13:16,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:13:16,384 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:13:16,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:13:16,385 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:13:16,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09d5acb2f81ee0994352651dad5f891cf0af6948836360f3240d2ea1a246e8a6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:13:16,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:13:16,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:13:16,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:13:16,725 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:13:16,726 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:13:16,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_04-munge_nr.i [2023-08-29 21:13:17,962 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:13:18,209 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:13:18,210 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_04-munge_nr.i [2023-08-29 21:13:18,222 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6bfd84d/b29a3c73386c43e4bcf8b7140feb8cad/FLAG1f34e8b52 [2023-08-29 21:13:18,241 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6bfd84d/b29a3c73386c43e4bcf8b7140feb8cad [2023-08-29 21:13:18,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:13:18,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:13:18,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:13:18,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:13:18,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:13:18,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f19452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18, skipping insertion in model container [2023-08-29 21:13:18,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:13:18,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:13:18,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:13:18,730 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:13:18,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:13:18,831 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:13:18,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18 WrapperNode [2023-08-29 21:13:18,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:13:18,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:13:18,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:13:18,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:13:18,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,879 INFO L138 Inliner]: procedures = 263, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2023-08-29 21:13:18,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:13:18,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:13:18,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:13:18,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:13:18,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,896 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:13:18,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:13:18,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:13:18,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:13:18,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18" (1/1) ... [2023-08-29 21:13:18,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:13:18,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:13:18,944 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) [2023-08-29 21:13:18,946 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 [2023-08-29 21:13:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:13:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:13:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 21:13:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:13:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:13:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:13:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:13:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:13:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 21:13:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:13:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:13:18,974 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:13:19,134 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:13:19,148 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:13:19,309 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:13:19,313 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:13:19,314 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:13:19,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:13:19 BoogieIcfgContainer [2023-08-29 21:13:19,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:13:19,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:13:19,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:13:19,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:13:19,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:13:18" (1/3) ... [2023-08-29 21:13:19,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d07e3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:13:19, skipping insertion in model container [2023-08-29 21:13:19,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:13:18" (2/3) ... [2023-08-29 21:13:19,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d07e3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:13:19, skipping insertion in model container [2023-08-29 21:13:19,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:13:19" (3/3) ... [2023-08-29 21:13:19,322 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_04-munge_nr.i [2023-08-29 21:13:19,335 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:13:19,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-29 21:13:19,336 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:13:19,397 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 21:13:19,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 55 transitions, 118 flow [2023-08-29 21:13:19,482 INFO L130 PetriNetUnfolder]: 0/54 cut-off events. [2023-08-29 21:13:19,483 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:13:19,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 0/54 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-29 21:13:19,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 55 transitions, 118 flow [2023-08-29 21:13:19,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 50 transitions, 106 flow [2023-08-29 21:13:19,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:13:19,502 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 50 transitions, 106 flow [2023-08-29 21:13:19,506 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 50 transitions, 106 flow [2023-08-29 21:13:19,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 106 flow [2023-08-29 21:13:19,543 INFO L130 PetriNetUnfolder]: 0/50 cut-off events. [2023-08-29 21:13:19,543 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:13:19,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 50 events. 0/50 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-29 21:13:19,545 INFO L119 LiptonReduction]: Number of co-enabled transitions 260 [2023-08-29 21:13:21,273 INFO L134 LiptonReduction]: Checked pairs total: 493 [2023-08-29 21:13:21,273 INFO L136 LiptonReduction]: Total number of compositions: 44 [2023-08-29 21:13:21,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:13:21,290 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;@1abe6a3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:13:21,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-29 21:13:21,291 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 21:13:21,292 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:13:21,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:13:21,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:13:21,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:13:21,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:13:21,314 INFO L85 PathProgramCache]: Analyzing trace with hash 198, now seen corresponding path program 1 times [2023-08-29 21:13:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:13:21,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505511186] [2023-08-29 21:13:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:13:21,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:13:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:13:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:13:21,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:13:21,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505511186] [2023-08-29 21:13:21,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505511186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:13:21,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:13:21,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:13:21,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587108860] [2023-08-29 21:13:21,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:13:21,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:13:21,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:13:21,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:13:21,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:13:21,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 99 [2023-08-29 21:13:21,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 2 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 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) [2023-08-29 21:13:21,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:13:21,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 99 [2023-08-29 21:13:21,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:13:21,502 INFO L130 PetriNetUnfolder]: 15/42 cut-off events. [2023-08-29 21:13:21,503 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:13:21,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 42 events. 15/42 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 91 event pairs, 15 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 76. Up to 43 conditions per place. [2023-08-29 21:13:21,505 INFO L137 encePairwiseOnDemand]: 97/99 looper letters, 12 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-08-29 21:13:21,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 12 transitions, 54 flow [2023-08-29 21:13:21,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:13:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:13:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 120 transitions. [2023-08-29 21:13:21,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2023-08-29 21:13:21,517 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 120 transitions. [2023-08-29 21:13:21,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 120 transitions. [2023-08-29 21:13:21,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:13:21,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 120 transitions. [2023-08-29 21:13:21,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 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) [2023-08-29 21:13:21,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2023-08-29 21:13:21,532 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2023-08-29 21:13:21,534 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 2 states and 120 transitions. [2023-08-29 21:13:21,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 12 transitions, 54 flow [2023-08-29 21:13:21,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:13:21,539 INFO L231 Difference]: Finished difference. Result has 15 places, 12 transitions, 26 flow [2023-08-29 21:13:21,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=26, PETRI_PLACES=15, PETRI_TRANSITIONS=12} [2023-08-29 21:13:21,546 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-08-29 21:13:21,546 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 12 transitions, 26 flow [2023-08-29 21:13:21,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 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) [2023-08-29 21:13:21,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:13:21,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:13:21,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:13:21,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:13:21,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:13:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash 185756245, now seen corresponding path program 1 times [2023-08-29 21:13:21,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:13:21,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911724662] [2023-08-29 21:13:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:13:21,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:13:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:13:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:13:21,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:13:21,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911724662] [2023-08-29 21:13:21,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911724662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:13:21,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:13:21,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:13:21,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057491906] [2023-08-29 21:13:21,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:13:21,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:13:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:13:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:13:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:13:21,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-08-29 21:13:21,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2023-08-29 21:13:21,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:13:21,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-08-29 21:13:21,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:13:21,763 INFO L130 PetriNetUnfolder]: 12/35 cut-off events. [2023-08-29 21:13:21,764 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:13:21,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 35 events. 12/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 64 event pairs, 12 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 71. Up to 34 conditions per place. [2023-08-29 21:13:21,765 INFO L137 encePairwiseOnDemand]: 96/99 looper letters, 9 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2023-08-29 21:13:21,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 11 transitions, 46 flow [2023-08-29 21:13:21,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:13:21,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:13:21,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-08-29 21:13:21,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2023-08-29 21:13:21,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-08-29 21:13:21,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-08-29 21:13:21,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:13:21,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-08-29 21:13:21,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-08-29 21:13:21,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-08-29 21:13:21,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-08-29 21:13:21,770 INFO L175 Difference]: Start difference. First operand has 15 places, 12 transitions, 26 flow. Second operand 3 states and 147 transitions. [2023-08-29 21:13:21,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 11 transitions, 46 flow [2023-08-29 21:13:21,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:13:21,771 INFO L231 Difference]: Finished difference. Result has 16 places, 11 transitions, 28 flow [2023-08-29 21:13:21,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=16, PETRI_TRANSITIONS=11} [2023-08-29 21:13:21,772 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -2 predicate places. [2023-08-29 21:13:21,773 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 11 transitions, 28 flow [2023-08-29 21:13:21,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2023-08-29 21:13:21,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:13:21,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:13:21,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:13:21,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:13:21,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:13:21,774 INFO L85 PathProgramCache]: Analyzing trace with hash 185756244, now seen corresponding path program 1 times [2023-08-29 21:13:21,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:13:21,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672292195] [2023-08-29 21:13:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:13:21,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:13:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:13:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:13:21,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:13:21,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672292195] [2023-08-29 21:13:21,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672292195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:13:21,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:13:21,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:13:21,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249674877] [2023-08-29 21:13:21,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:13:21,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:13:21,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:13:21,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:13:21,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:13:21,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 99 [2023-08-29 21:13:21,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 11 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-08-29 21:13:21,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:13:21,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 99 [2023-08-29 21:13:21,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:13:21,945 INFO L130 PetriNetUnfolder]: 9/28 cut-off events. [2023-08-29 21:13:21,945 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:13:21,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 9/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 59. Up to 27 conditions per place. [2023-08-29 21:13:21,946 INFO L137 encePairwiseOnDemand]: 96/99 looper letters, 8 selfloop transitions, 2 changer transitions 0/10 dead transitions. [2023-08-29 21:13:21,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 10 transitions, 46 flow [2023-08-29 21:13:21,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:13:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:13:21,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2023-08-29 21:13:21,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5218855218855218 [2023-08-29 21:13:21,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2023-08-29 21:13:21,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2023-08-29 21:13:21,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:13:21,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2023-08-29 21:13:21,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-08-29 21:13:21,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-08-29 21:13:21,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-08-29 21:13:21,951 INFO L175 Difference]: Start difference. First operand has 16 places, 11 transitions, 28 flow. Second operand 3 states and 155 transitions. [2023-08-29 21:13:21,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 10 transitions, 46 flow [2023-08-29 21:13:21,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 42 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:13:21,952 INFO L231 Difference]: Finished difference. Result has 15 places, 10 transitions, 26 flow [2023-08-29 21:13:21,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=15, PETRI_TRANSITIONS=10} [2023-08-29 21:13:21,953 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-08-29 21:13:21,953 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 26 flow [2023-08-29 21:13:21,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-08-29 21:13:21,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:13:21,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:13:21,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:13:21,955 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:13:21,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:13:21,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1402439848, now seen corresponding path program 1 times [2023-08-29 21:13:21,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:13:21,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616366457] [2023-08-29 21:13:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:13:21,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:13:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:13:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:13:22,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:13:22,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616366457] [2023-08-29 21:13:22,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616366457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:13:22,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:13:22,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:13:22,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061501598] [2023-08-29 21:13:22,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:13:22,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:13:22,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:13:22,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:13:22,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:13:22,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 99 [2023-08-29 21:13:22,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-08-29 21:13:22,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:13:22,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 99 [2023-08-29 21:13:22,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:13:22,213 INFO L130 PetriNetUnfolder]: 7/28 cut-off events. [2023-08-29 21:13:22,213 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:13:22,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 7/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 3 based on Foata normal form. 2/30 useless extension candidates. Maximal degree in co-relation 59. Up to 19 conditions per place. [2023-08-29 21:13:22,214 INFO L137 encePairwiseOnDemand]: 95/99 looper letters, 11 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2023-08-29 21:13:22,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 14 transitions, 62 flow [2023-08-29 21:13:22,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:13:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:13:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2023-08-29 21:13:22,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2023-08-29 21:13:22,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2023-08-29 21:13:22,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2023-08-29 21:13:22,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:13:22,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2023-08-29 21:13:22,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2023-08-29 21:13:22,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-08-29 21:13:22,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-08-29 21:13:22,224 INFO L175 Difference]: Start difference. First operand has 15 places, 10 transitions, 26 flow. Second operand 3 states and 156 transitions. [2023-08-29 21:13:22,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 14 transitions, 62 flow [2023-08-29 21:13:22,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 14 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:13:22,229 INFO L231 Difference]: Finished difference. Result has 16 places, 12 transitions, 41 flow [2023-08-29 21:13:22,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=16, PETRI_TRANSITIONS=12} [2023-08-29 21:13:22,230 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -2 predicate places. [2023-08-29 21:13:22,231 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 12 transitions, 41 flow [2023-08-29 21:13:22,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-08-29 21:13:22,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:13:22,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:13:22,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:13:22,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:13:22,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:13:22,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1136101264, now seen corresponding path program 2 times [2023-08-29 21:13:22,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:13:22,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717681274] [2023-08-29 21:13:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:13:22,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:13:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:13:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:13:22,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:13:22,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717681274] [2023-08-29 21:13:22,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717681274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:13:22,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:13:22,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:13:22,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513627752] [2023-08-29 21:13:22,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:13:22,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:13:22,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:13:22,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:13:22,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:13:22,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 99 [2023-08-29 21:13:22,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2023-08-29 21:13:22,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:13:22,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 99 [2023-08-29 21:13:22,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:13:22,426 INFO L130 PetriNetUnfolder]: 7/27 cut-off events. [2023-08-29 21:13:22,426 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 21:13:22,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 27 events. 7/27 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 6 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 76. Up to 27 conditions per place. [2023-08-29 21:13:22,427 INFO L137 encePairwiseOnDemand]: 97/99 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-29 21:13:22,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 61 flow [2023-08-29 21:13:22,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:13:22,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:13:22,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2023-08-29 21:13:22,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286195286195287 [2023-08-29 21:13:22,428 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 157 transitions. [2023-08-29 21:13:22,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 157 transitions. [2023-08-29 21:13:22,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:13:22,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 157 transitions. [2023-08-29 21:13:22,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2023-08-29 21:13:22,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-08-29 21:13:22,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-08-29 21:13:22,431 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 41 flow. Second operand 3 states and 157 transitions. [2023-08-29 21:13:22,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 61 flow [2023-08-29 21:13:22,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 58 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:13:22,432 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-08-29 21:13:22,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-08-29 21:13:22,432 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -2 predicate places. [2023-08-29 21:13:22,433 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-08-29 21:13:22,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2023-08-29 21:13:22,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-08-29 21:13:22,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-08-29 21:13:22,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-29 21:13:22,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-08-29 21:13:22,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-08-29 21:13:22,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-08-29 21:13:22,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 21:13:22,437 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-29 21:13:22,439 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:13:22,440 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:13:22,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:13:22 BasicIcfg [2023-08-29 21:13:22,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:13:22,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:13:22,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:13:22,444 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:13:22,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:13:19" (3/4) ... [2023-08-29 21:13:22,447 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:13:22,452 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 21:13:22,455 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-08-29 21:13:22,456 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:13:22,456 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:13:22,486 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:13:22,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:13:22,487 INFO L158 Benchmark]: Toolchain (without parser) took 4242.10ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 46.8MB in the beginning and 66.5MB in the end (delta: -19.7MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2023-08-29 21:13:22,488 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 37.0MB in the beginning and 37.0MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:13:22,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 584.14ms. Allocated memory is still 73.4MB. Free memory was 46.7MB in the beginning and 37.2MB in the end (delta: 9.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2023-08-29 21:13:22,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.21ms. Allocated memory is still 73.4MB. Free memory was 37.2MB in the beginning and 34.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:13:22,491 INFO L158 Benchmark]: Boogie Preprocessor took 18.31ms. Allocated memory is still 73.4MB. Free memory was 34.9MB in the beginning and 33.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:13:22,491 INFO L158 Benchmark]: RCFGBuilder took 415.52ms. Allocated memory is still 73.4MB. Free memory was 33.4MB in the beginning and 41.4MB in the end (delta: -8.0MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2023-08-29 21:13:22,491 INFO L158 Benchmark]: TraceAbstraction took 3126.11ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 40.7MB in the beginning and 68.7MB in the end (delta: -28.0MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2023-08-29 21:13:22,492 INFO L158 Benchmark]: Witness Printer took 42.97ms. Allocated memory is still 107.0MB. Free memory was 68.7MB in the beginning and 66.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:13:22,495 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 58.7MB. Free memory was 37.0MB in the beginning and 37.0MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 584.14ms. Allocated memory is still 73.4MB. Free memory was 46.7MB in the beginning and 37.2MB in the end (delta: 9.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.21ms. Allocated memory is still 73.4MB. Free memory was 37.2MB in the beginning and 34.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.31ms. Allocated memory is still 73.4MB. Free memory was 34.9MB in the beginning and 33.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 415.52ms. Allocated memory is still 73.4MB. Free memory was 33.4MB in the beginning and 41.4MB in the end (delta: -8.0MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3126.11ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 40.7MB in the beginning and 68.7MB in the end (delta: -28.0MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Witness Printer took 42.97ms. Allocated memory is still 107.0MB. Free memory was 68.7MB in the beginning and 66.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 54 PlacesBefore, 18 PlacesAfterwards, 50 TransitionsBefore, 14 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 493 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 319, independent: 245, independent conditional: 0, independent unconditional: 245, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 149, independent: 136, independent conditional: 0, independent unconditional: 136, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 319, independent: 109, independent conditional: 0, independent unconditional: 109, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 149, unknown conditional: 0, unknown unconditional: 149] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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: -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: 928]: 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, 68 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: 3.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 138 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 161 IncrementalHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 11 mSDtfsCounter, 161 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, InterpolantAutomatonStates: 14, 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 21:13:22,520 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