./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.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/28-race_reach_83-list2_racing1.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 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d --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 00:54:35,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:54:35,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:54:35,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:54:35,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:54:35,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:54:35,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:54:35,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:54:35,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:54:35,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:54:35,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:54:35,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:54:35,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:54:35,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:54:35,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:54:35,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:54:35,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:54:35,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:54:35,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:54:35,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:54:35,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:54:35,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:54:35,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:54:35,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:54:35,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:54:35,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:54:35,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:54:35,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:54:35,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:54:35,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:54:35,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:54:35,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:54:35,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:54:35,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:54:35,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:54:35,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:54:35,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:54:35,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:54:35,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:54:35,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:54:35,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:54:35,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:54:35,388 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:54:35,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:54:35,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:54:35,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:54:35,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:54:35,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:54:35,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:54:35,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:54:35,398 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:54:35,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:54:35,398 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:54:35,399 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:54:35,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:54:35,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:54:35,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:54:35,399 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:54:35,399 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:54:35,400 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:54:35,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:54:35,400 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:54:35,400 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:54:35,400 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:54:35,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:54:35,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:54:35,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:54:35,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:54:35,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:54:35,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:54:35,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:54:35,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:54:35,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:54:35,402 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:54:35,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:54:35,402 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:54:35,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:54:35,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:54:35,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:54:35,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:54:35,695 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:54:35,695 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:54:35,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-09-01 00:54:36,634 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:54:36,915 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:54:36,915 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-09-01 00:54:36,932 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fbe6b18b/e0c10ee0471c4e3e909b07cd25b28c21/FLAG1332fe441 [2023-09-01 00:54:36,941 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fbe6b18b/e0c10ee0471c4e3e909b07cd25b28c21 [2023-09-01 00:54:36,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:54:36,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:54:36,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:54:36,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:54:36,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:54:36,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:54:36" (1/1) ... [2023-09-01 00:54:36,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6412a57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:36, skipping insertion in model container [2023-09-01 00:54:36,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:54:36" (1/1) ... [2023-09-01 00:54:36,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:54:36,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:54:37,235 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/28-race_reach_83-list2_racing1.i[47038,47051] [2023-09-01 00:54:37,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:54:37,287 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:54:37,306 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/28-race_reach_83-list2_racing1.i[47038,47051] [2023-09-01 00:54:37,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:54:37,384 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:54:37,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37 WrapperNode [2023-09-01 00:54:37,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:54:37,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:54:37,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:54:37,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:54:37,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37" (1/1) ... [2023-09-01 00:54:37,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37" (1/1) ... [2023-09-01 00:54:37,459 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 344 [2023-09-01 00:54:37,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:54:37,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:54:37,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:54:37,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:54:37,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37" (1/1) ... [2023-09-01 00:54:37,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37" (1/1) ... [2023-09-01 00:54:37,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37" (1/1) ... [2023-09-01 00:54:37,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37" (1/1) ... [2023-09-01 00:54:37,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37" (1/1) ... [2023-09-01 00:54:37,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37" (1/1) ... [2023-09-01 00:54:37,514 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37" (1/1) ... [2023-09-01 00:54:37,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37" (1/1) ... [2023-09-01 00:54:37,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:54:37,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:54:37,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:54:37,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:54:37,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37" (1/1) ... [2023-09-01 00:54:37,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:54:37,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:54:37,575 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 00:54:37,591 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 00:54:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:54:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 00:54:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 00:54:37,606 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 00:54:37,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:54:37,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:54:37,606 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 00:54:37,606 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 00:54:37,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:54:37,606 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:54:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 00:54:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:54:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 00:54:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-09-01 00:54:37,607 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-09-01 00:54:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:54:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:54:37,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:54:37,609 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 00:54:37,784 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:54:37,786 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:54:38,378 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:54:38,393 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:54:38,393 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-09-01 00:54:38,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:54:38 BoogieIcfgContainer [2023-09-01 00:54:38,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:54:38,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:54:38,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:54:38,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:54:38,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:54:36" (1/3) ... [2023-09-01 00:54:38,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f55fdd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:54:38, skipping insertion in model container [2023-09-01 00:54:38,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:54:37" (2/3) ... [2023-09-01 00:54:38,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f55fdd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:54:38, skipping insertion in model container [2023-09-01 00:54:38,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:54:38" (3/3) ... [2023-09-01 00:54:38,400 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2023-09-01 00:54:38,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:54:38,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2023-09-01 00:54:38,412 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:54:38,493 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:54:38,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 412 transitions, 866 flow [2023-09-01 00:54:38,795 INFO L130 PetriNetUnfolder]: 164/1274 cut-off events. [2023-09-01 00:54:38,795 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-09-01 00:54:38,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 1274 events. 164/1274 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8885 event pairs, 0 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 658. Up to 16 conditions per place. [2023-09-01 00:54:38,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 374 places, 412 transitions, 866 flow [2023-09-01 00:54:38,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 402 transitions, 846 flow [2023-09-01 00:54:38,827 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:54:38,834 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 364 places, 402 transitions, 846 flow [2023-09-01 00:54:38,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 364 places, 402 transitions, 846 flow [2023-09-01 00:54:38,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 364 places, 402 transitions, 846 flow [2023-09-01 00:54:39,132 INFO L130 PetriNetUnfolder]: 164/1262 cut-off events. [2023-09-01 00:54:39,133 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-09-01 00:54:39,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 1262 events. 164/1262 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8825 event pairs, 0 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 648. Up to 16 conditions per place. [2023-09-01 00:54:39,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 73070 [2023-09-01 00:54:55,349 INFO L134 LiptonReduction]: Checked pairs total: 201647 [2023-09-01 00:54:55,350 INFO L136 LiptonReduction]: Total number of compositions: 324 [2023-09-01 00:54:55,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:54:55,378 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;@5e0a8980, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:54:55,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 00:54:55,386 INFO L130 PetriNetUnfolder]: 0/30 cut-off events. [2023-09-01 00:54:55,386 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:54:55,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:54:55,387 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:54:55,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 00:54:55,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:54:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash -252017628, now seen corresponding path program 1 times [2023-09-01 00:54:55,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:54:55,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33580051] [2023-09-01 00:54:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:54:55,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:54:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:54:55,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:54:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:54:55,647 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:54:55,649 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:54:55,650 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 00:54:55,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 00:54:55,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 00:54:55,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:54:55,653 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:54:55,657 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 00:54:55,658 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:54:55,658 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:54:55,762 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-09-01 00:54:55,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 594 places, 665 transitions, 1420 flow [2023-09-01 00:54:57,723 INFO L130 PetriNetUnfolder]: 1130/6502 cut-off events. [2023-09-01 00:54:57,723 INFO L131 PetriNetUnfolder]: For 602/700 co-relation queries the response was YES. [2023-09-01 00:54:57,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7176 conditions, 6502 events. 1130/6502 cut-off events. For 602/700 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 63781 event pairs, 22 based on Foata normal form. 0/4752 useless extension candidates. Maximal degree in co-relation 4023. Up to 192 conditions per place. [2023-09-01 00:54:57,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 594 places, 665 transitions, 1420 flow [2023-09-01 00:54:57,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 584 places, 655 transitions, 1400 flow [2023-09-01 00:54:57,914 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:54:57,915 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 584 places, 655 transitions, 1400 flow [2023-09-01 00:54:57,915 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 584 places, 655 transitions, 1400 flow [2023-09-01 00:54:57,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 584 places, 655 transitions, 1400 flow [2023-09-01 00:54:59,770 INFO L130 PetriNetUnfolder]: 1130/6488 cut-off events. [2023-09-01 00:54:59,771 INFO L131 PetriNetUnfolder]: For 602/700 co-relation queries the response was YES. [2023-09-01 00:54:59,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7162 conditions, 6488 events. 1130/6488 cut-off events. For 602/700 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 63604 event pairs, 22 based on Foata normal form. 0/4752 useless extension candidates. Maximal degree in co-relation 4011. Up to 192 conditions per place. [2023-09-01 00:55:00,239 INFO L119 LiptonReduction]: Number of co-enabled transitions 272164 [2023-09-01 00:55:21,106 INFO L134 LiptonReduction]: Checked pairs total: 836547 [2023-09-01 00:55:21,106 INFO L136 LiptonReduction]: Total number of compositions: 493 [2023-09-01 00:55:21,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:55:21,114 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;@5e0a8980, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:55:21,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 00:55:21,127 INFO L130 PetriNetUnfolder]: 16/181 cut-off events. [2023-09-01 00:55:21,127 INFO L131 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2023-09-01 00:55:21,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:55:21,128 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:55:21,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 00:55:21,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:55:21,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1196336982, now seen corresponding path program 1 times [2023-09-01 00:55:21,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:55:21,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613785013] [2023-09-01 00:55:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:55:21,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:55:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:55:21,215 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:55:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:55:21,248 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:55:21,252 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:55:21,252 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 00:55:21,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 00:55:21,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 00:55:21,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:55:21,254 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:55:21,254 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 00:55:21,255 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:55:21,255 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:55:21,332 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-09-01 00:55:21,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 814 places, 918 transitions, 1980 flow [2023-09-01 00:55:38,951 INFO L130 PetriNetUnfolder]: 8984/36902 cut-off events. [2023-09-01 00:55:38,951 INFO L131 PetriNetUnfolder]: For 7059/7364 co-relation queries the response was YES. [2023-09-01 00:55:41,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44076 conditions, 36902 events. 8984/36902 cut-off events. For 7059/7364 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 434608 event pairs, 912 based on Foata normal form. 0/28032 useless extension candidates. Maximal degree in co-relation 23192. Up to 2304 conditions per place. [2023-09-01 00:55:41,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 814 places, 918 transitions, 1980 flow [2023-09-01 00:55:42,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 804 places, 908 transitions, 1960 flow [2023-09-01 00:55:42,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:55:42,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 804 places, 908 transitions, 1960 flow [2023-09-01 00:55:42,269 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 804 places, 908 transitions, 1960 flow [2023-09-01 00:55:42,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 804 places, 908 transitions, 1960 flow [2023-09-01 00:55:59,220 INFO L130 PetriNetUnfolder]: 8984/36886 cut-off events. [2023-09-01 00:55:59,221 INFO L131 PetriNetUnfolder]: For 7059/7364 co-relation queries the response was YES. [2023-09-01 00:56:00,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44060 conditions, 36886 events. 8984/36886 cut-off events. For 7059/7364 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 434095 event pairs, 912 based on Foata normal form. 0/28032 useless extension candidates. Maximal degree in co-relation 23178. Up to 2304 conditions per place. [2023-09-01 00:56:04,866 INFO L119 LiptonReduction]: Number of co-enabled transitions 597282 [2023-09-01 00:56:24,163 INFO L134 LiptonReduction]: Checked pairs total: 2057091 [2023-09-01 00:56:24,163 INFO L136 LiptonReduction]: Total number of compositions: 676 [2023-09-01 00:56:24,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:56:24,171 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;@5e0a8980, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:56:24,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 00:56:24,243 INFO L130 PetriNetUnfolder]: 74/523 cut-off events. [2023-09-01 00:56:24,243 INFO L131 PetriNetUnfolder]: For 49/60 co-relation queries the response was YES. [2023-09-01 00:56:24,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:56:24,244 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:56:24,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 00:56:24,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:56:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash -635989268, now seen corresponding path program 1 times [2023-09-01 00:56:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:56:24,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987125705] [2023-09-01 00:56:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:56:24,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:56:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:56:24,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:56:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:56:24,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:56:24,319 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:56:24,319 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 00:56:24,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 00:56:24,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 00:56:24,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:56:24,320 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:56:24,320 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 00:56:24,321 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:56:24,321 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:56:24,415 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-09-01 00:56:24,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1034 places, 1171 transitions, 2546 flow