./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b --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 11:13:53,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:13:53,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:13:53,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:13:53,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:13:53,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:13:53,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:13:53,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:13:53,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:13:53,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:13:53,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:13:53,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:13:53,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:13:53,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:13:53,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:13:53,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:13:53,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:13:53,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:13:53,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:13:53,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:13:53,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:13:53,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:13:53,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:13:53,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:13:53,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:13:53,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:13:53,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:13:53,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:13:53,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:13:53,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:13:53,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:13:53,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:13:53,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:13:53,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:13:53,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:13:53,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:13:53,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:13:53,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:13:53,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:13:53,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:13:53,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:13:53,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:13:53,434 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:13:53,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:13:53,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:13:53,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:13:53,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:13:53,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:13:53,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:13:53,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:13:53,443 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:13:53,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:13:53,444 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:13:53,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:13:53,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:13:53,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:13:53,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:13:53,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:13:53,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:13:53,445 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:13:53,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:13:53,446 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:13:53,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:13:53,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:13:53,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:13:53,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:13:53,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:13:53,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:13:53,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:13:53,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:13:53,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:13:53,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:13:53,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:13:53,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:13:53,449 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:13:53,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:13:53,449 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:13:53,449 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:13:53,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:13:53,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:13:53,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:13:53,775 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:13:53,776 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:13:53,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-09-01 11:13:55,057 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:13:55,364 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:13:55,364 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-09-01 11:13:55,392 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85112880d/b64d226f52a84f9cb3a56f41a2ef1b76/FLAG7f5a7d43f [2023-09-01 11:13:55,413 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85112880d/b64d226f52a84f9cb3a56f41a2ef1b76 [2023-09-01 11:13:55,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:13:55,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:13:55,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:13:55,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:13:55,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:13:55,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:13:55" (1/1) ... [2023-09-01 11:13:55,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2054f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:55, skipping insertion in model container [2023-09-01 11:13:55,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:13:55" (1/1) ... [2023-09-01 11:13:55,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:13:55,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:13:55,852 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_85-list2_racefree.i[47038,47051] [2023-09-01 11:13:55,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:13:55,919 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:13:55,947 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_85-list2_racefree.i[47038,47051] [2023-09-01 11:13:55,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:13:56,043 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:13:56,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56 WrapperNode [2023-09-01 11:13:56,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:13:56,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:13:56,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:13:56,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:13:56,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56" (1/1) ... [2023-09-01 11:13:56,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56" (1/1) ... [2023-09-01 11:13:56,138 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 344 [2023-09-01 11:13:56,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:13:56,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:13:56,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:13:56,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:13:56,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56" (1/1) ... [2023-09-01 11:13:56,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56" (1/1) ... [2023-09-01 11:13:56,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56" (1/1) ... [2023-09-01 11:13:56,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56" (1/1) ... [2023-09-01 11:13:56,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56" (1/1) ... [2023-09-01 11:13:56,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56" (1/1) ... [2023-09-01 11:13:56,201 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56" (1/1) ... [2023-09-01 11:13:56,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56" (1/1) ... [2023-09-01 11:13:56,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:13:56,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:13:56,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:13:56,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:13:56,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56" (1/1) ... [2023-09-01 11:13:56,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:13:56,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:13:56,250 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 11:13:56,273 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 11:13:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:13:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 11:13:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 11:13:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 11:13:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:13:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:13:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 11:13:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 11:13:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:13:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:13:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 11:13:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:13:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 11:13:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-09-01 11:13:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-09-01 11:13:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:13:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:13:56,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:13:56,291 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 11:13:56,493 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:13:56,495 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:13:56,915 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:13:56,929 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:13:56,930 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-09-01 11:13:56,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:13:56 BoogieIcfgContainer [2023-09-01 11:13:56,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:13:56,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:13:56,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:13:56,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:13:56,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:13:55" (1/3) ... [2023-09-01 11:13:56,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24abc93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:13:56, skipping insertion in model container [2023-09-01 11:13:56,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:56" (2/3) ... [2023-09-01 11:13:56,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24abc93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:13:56, skipping insertion in model container [2023-09-01 11:13:56,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:13:56" (3/3) ... [2023-09-01 11:13:56,948 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2023-09-01 11:13:56,955 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:13:56,964 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:13:56,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 11:13:56,965 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:13:57,111 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 11:13:57,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-09-01 11:13:57,478 INFO L130 PetriNetUnfolder]: 164/1071 cut-off events. [2023-09-01 11:13:57,479 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-09-01 11:13:57,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1071 events. 164/1071 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6692 event pairs, 0 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-09-01 11:13:57,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 350 transitions, 742 flow [2023-09-01 11:13:57,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 350 transitions, 742 flow [2023-09-01 11:13:57,522 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:13:57,542 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 350 transitions, 742 flow [2023-09-01 11:13:57,546 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 350 transitions, 742 flow [2023-09-01 11:13:57,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-09-01 11:13:57,728 INFO L130 PetriNetUnfolder]: 164/1071 cut-off events. [2023-09-01 11:13:57,729 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-09-01 11:13:57,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1071 events. 164/1071 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6692 event pairs, 0 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-09-01 11:13:57,779 INFO L119 LiptonReduction]: Number of co-enabled transitions 51176 [2023-09-01 11:14:10,803 INFO L134 LiptonReduction]: Checked pairs total: 98696 [2023-09-01 11:14:10,803 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-09-01 11:14:10,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:14:10,820 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54fb1094, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:14:10,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 11:14:10,825 INFO L130 PetriNetUnfolder]: 0/20 cut-off events. [2023-09-01 11:14:10,825 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:14:10,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:14:10,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 11:14:10,826 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 11:14:10,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:14:10,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2134265376, now seen corresponding path program 1 times [2023-09-01 11:14:10,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:14:10,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067135688] [2023-09-01 11:14:10,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:14:10,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:14:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:14:11,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:14:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:14:11,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:14:11,185 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:14:11,186 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 11:14:11,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 11:14:11,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 11:14:11,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:14:11,189 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:14:11,194 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 11:14:11,194 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:14:11,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 11:14:11,282 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-09-01 11:14:11,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 565 transitions, 1220 flow [2023-09-01 11:14:13,341 INFO L130 PetriNetUnfolder]: 1130/5483 cut-off events. [2023-09-01 11:14:13,342 INFO L131 PetriNetUnfolder]: For 602/702 co-relation queries the response was YES. [2023-09-01 11:14:13,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6157 conditions, 5483 events. 1130/5483 cut-off events. For 602/702 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 50281 event pairs, 22 based on Foata normal form. 0/4621 useless extension candidates. Maximal degree in co-relation 3440. Up to 192 conditions per place. [2023-09-01 11:14:13,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 494 places, 565 transitions, 1220 flow [2023-09-01 11:14:13,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 494 places, 565 transitions, 1220 flow [2023-09-01 11:14:13,532 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:14:13,532 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 494 places, 565 transitions, 1220 flow [2023-09-01 11:14:13,532 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 494 places, 565 transitions, 1220 flow [2023-09-01 11:14:13,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 565 transitions, 1220 flow [2023-09-01 11:14:15,207 INFO L130 PetriNetUnfolder]: 1130/5483 cut-off events. [2023-09-01 11:14:15,207 INFO L131 PetriNetUnfolder]: For 602/702 co-relation queries the response was YES. [2023-09-01 11:14:15,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6157 conditions, 5483 events. 1130/5483 cut-off events. For 602/702 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 50281 event pairs, 22 based on Foata normal form. 0/4621 useless extension candidates. Maximal degree in co-relation 3440. Up to 192 conditions per place. [2023-09-01 11:14:15,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 193052 [2023-09-01 11:14:30,672 INFO L134 LiptonReduction]: Checked pairs total: 408315 [2023-09-01 11:14:30,673 INFO L136 LiptonReduction]: Total number of compositions: 427 [2023-09-01 11:14:30,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:14:30,676 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54fb1094, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:14:30,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 11:14:30,686 INFO L130 PetriNetUnfolder]: 16/121 cut-off events. [2023-09-01 11:14:30,686 INFO L131 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2023-09-01 11:14:30,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:14:30,687 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 11:14:30,687 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 11:14:30,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:14:30,688 INFO L85 PathProgramCache]: Analyzing trace with hash 113769498, now seen corresponding path program 1 times [2023-09-01 11:14:30,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:14:30,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316097733] [2023-09-01 11:14:30,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:14:30,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:14:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:14:30,725 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:14:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:14:30,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:14:30,756 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:14:30,757 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 11:14:30,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 11:14:30,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 11:14:30,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:14:30,758 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:14:30,758 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 11:14:30,759 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:14:30,759 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 11:14:30,832 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-09-01 11:14:30,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 676 places, 780 transitions, 1704 flow [2023-09-01 11:14:44,185 INFO L130 PetriNetUnfolder]: 8984/31247 cut-off events. [2023-09-01 11:14:44,185 INFO L131 PetriNetUnfolder]: For 7059/7302 co-relation queries the response was YES. [2023-09-01 11:14:45,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38421 conditions, 31247 events. 8984/31247 cut-off events. For 7059/7302 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 342136 event pairs, 912 based on Foata normal form. 0/27005 useless extension candidates. Maximal degree in co-relation 20103. Up to 2304 conditions per place. [2023-09-01 11:14:45,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 676 places, 780 transitions, 1704 flow [2023-09-01 11:14:47,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 676 places, 780 transitions, 1704 flow [2023-09-01 11:14:47,092 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:14:47,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 676 places, 780 transitions, 1704 flow [2023-09-01 11:14:47,093 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 676 places, 780 transitions, 1704 flow [2023-09-01 11:14:47,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 676 places, 780 transitions, 1704 flow [2023-09-01 11:14:59,576 INFO L130 PetriNetUnfolder]: 8984/31247 cut-off events. [2023-09-01 11:14:59,577 INFO L131 PetriNetUnfolder]: For 7059/7302 co-relation queries the response was YES. [2023-09-01 11:15:01,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38421 conditions, 31247 events. 8984/31247 cut-off events. For 7059/7302 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 342136 event pairs, 912 based on Foata normal form. 0/27005 useless extension candidates. Maximal degree in co-relation 20103. Up to 2304 conditions per place. [2023-09-01 11:15:04,692 INFO L119 LiptonReduction]: Number of co-enabled transitions 425628 [2023-09-01 11:15:22,338 INFO L134 LiptonReduction]: Checked pairs total: 938617 [2023-09-01 11:15:22,339 INFO L136 LiptonReduction]: Total number of compositions: 591 [2023-09-01 11:15:22,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:15:22,341 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54fb1094, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:15:22,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 11:15:22,365 INFO L130 PetriNetUnfolder]: 105/445 cut-off events. [2023-09-01 11:15:22,366 INFO L131 PetriNetUnfolder]: For 67/80 co-relation queries the response was YES. [2023-09-01 11:15:22,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:15:22,366 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 11:15:22,366 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 11:15:22,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:15:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1274035994, now seen corresponding path program 1 times [2023-09-01 11:15:22,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:15:22,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405105703] [2023-09-01 11:15:22,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:15:22,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:15:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:15:22,428 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:15:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:15:22,473 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:15:22,474 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:15:22,474 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 11:15:22,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 11:15:22,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 11:15:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:15:22,475 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:15:22,475 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 11:15:22,476 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:15:22,476 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 11:15:22,578 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-09-01 11:15:22,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 858 places, 995 transitions, 2194 flow