./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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_06-cond_racing1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-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 ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --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 [2023-08-31 20:42:13,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:42:13,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:42:13,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:42:13,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:42:13,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:42:13,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:42:13,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:42:13,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:42:13,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:42:13,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:42:13,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:42:13,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:42:13,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:42:13,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:42:13,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:42:13,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:42:13,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:42:13,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:42:13,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:42:13,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:42:13,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:42:13,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:42:13,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:42:13,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:42:13,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:42:13,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:42:13,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:42:13,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:42:13,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:42:13,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:42:13,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:42:13,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:42:13,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:42:13,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:42:13,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:42:13,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:42:13,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:42:13,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:42:13,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:42:13,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:42:13,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:42:13,453 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:42:13,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:42:13,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:42:13,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:42:13,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:42:13,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:42:13,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:42:13,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:42:13,460 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:42:13,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:42:13,460 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:42:13,461 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:42:13,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:42:13,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:42:13,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:42:13,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:42:13,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:42:13,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:42:13,462 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:42:13,462 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:42:13,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:42:13,463 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:42:13,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:42:13,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:42:13,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:42:13,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:42:13,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:42:13,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:42:13,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:42:13,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:42:13,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:42:13,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:42:13,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:42:13,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:42:13,465 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:42:13,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:42:13,466 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:42:13,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:42:13,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:42:13,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:42:13,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:42:13,832 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:42:13,832 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:42:13,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-08-31 20:42:15,098 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:42:15,427 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:42:15,431 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-08-31 20:42:15,458 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6739a3f23/fae8675067874374a9a40e32c352cb16/FLAGccd34d01c [2023-08-31 20:42:15,478 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6739a3f23/fae8675067874374a9a40e32c352cb16 [2023-08-31 20:42:15,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:42:15,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:42:15,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:42:15,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:42:15,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:42:15,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:42:15" (1/1) ... [2023-08-31 20:42:15,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128c504a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:15, skipping insertion in model container [2023-08-31 20:42:15,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:42:15" (1/1) ... [2023-08-31 20:42:15,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:42:15,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:42:15,966 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_06-cond_racing1.i[41322,41335] [2023-08-31 20:42:15,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:42:16,004 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:42:16,048 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_06-cond_racing1.i[41322,41335] [2023-08-31 20:42:16,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:42:16,145 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:42:16,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16 WrapperNode [2023-08-31 20:42:16,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:42:16,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:42:16,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:42:16,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:42:16,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16" (1/1) ... [2023-08-31 20:42:16,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16" (1/1) ... [2023-08-31 20:42:16,212 INFO L138 Inliner]: procedures = 270, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2023-08-31 20:42:16,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:42:16,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:42:16,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:42:16,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:42:16,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16" (1/1) ... [2023-08-31 20:42:16,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16" (1/1) ... [2023-08-31 20:42:16,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16" (1/1) ... [2023-08-31 20:42:16,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16" (1/1) ... [2023-08-31 20:42:16,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16" (1/1) ... [2023-08-31 20:42:16,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16" (1/1) ... [2023-08-31 20:42:16,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16" (1/1) ... [2023-08-31 20:42:16,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16" (1/1) ... [2023-08-31 20:42:16,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:42:16,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:42:16,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:42:16,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:42:16,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16" (1/1) ... [2023-08-31 20:42:16,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:42:16,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:42:16,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 20:42:16,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 20:42:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:42:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:42:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:42:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:42:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:42:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:42:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:42:16,339 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:42:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:42:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:42:16,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:42:16,341 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 20:42:16,511 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:42:16,513 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:42:16,790 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:42:16,797 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:42:16,799 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-31 20:42:16,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:42:16 BoogieIcfgContainer [2023-08-31 20:42:16,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:42:16,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:42:16,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:42:16,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:42:16,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:42:15" (1/3) ... [2023-08-31 20:42:16,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fccda89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:42:16, skipping insertion in model container [2023-08-31 20:42:16,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:16" (2/3) ... [2023-08-31 20:42:16,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fccda89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:42:16, skipping insertion in model container [2023-08-31 20:42:16,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:42:16" (3/3) ... [2023-08-31 20:42:16,832 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2023-08-31 20:42:16,841 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:42:16,850 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:42:16,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-31 20:42:16,851 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:42:16,938 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:42:16,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 143 transitions, 294 flow [2023-08-31 20:42:17,084 INFO L130 PetriNetUnfolder]: 23/193 cut-off events. [2023-08-31 20:42:17,085 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:42:17,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 193 events. 23/193 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 540 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 99. Up to 6 conditions per place. [2023-08-31 20:42:17,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 143 transitions, 294 flow [2023-08-31 20:42:17,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 138 transitions, 281 flow [2023-08-31 20:42:17,103 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:17,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 138 transitions, 281 flow [2023-08-31 20:42:17,121 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 138 transitions, 281 flow [2023-08-31 20:42:17,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 138 transitions, 281 flow [2023-08-31 20:42:17,167 INFO L130 PetriNetUnfolder]: 22/188 cut-off events. [2023-08-31 20:42:17,168 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:42:17,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 188 events. 22/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 536 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 99. Up to 6 conditions per place. [2023-08-31 20:42:17,174 INFO L119 LiptonReduction]: Number of co-enabled transitions 4928 [2023-08-31 20:42:20,463 INFO L134 LiptonReduction]: Checked pairs total: 12605 [2023-08-31 20:42:20,464 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-31 20:42:20,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:20,480 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;@4bdf981d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:20,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:20,484 INFO L130 PetriNetUnfolder]: 2/24 cut-off events. [2023-08-31 20:42:20,485 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:42:20,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:20,485 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:42:20,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:20,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:20,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1389265397, now seen corresponding path program 1 times [2023-08-31 20:42:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:20,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822688841] [2023-08-31 20:42:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:20,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:20,597 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:20,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:20,654 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:20,655 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:20,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:42:20,657 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:20,660 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:20,660 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:20,661 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:42:20,680 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:42:20,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 189 transitions, 396 flow [2023-08-31 20:42:20,719 INFO L130 PetriNetUnfolder]: 40/319 cut-off events. [2023-08-31 20:42:20,720 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:42:20,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 40/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1079 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2023-08-31 20:42:20,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 189 transitions, 396 flow [2023-08-31 20:42:20,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 189 transitions, 396 flow [2023-08-31 20:42:20,725 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:20,725 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 189 transitions, 396 flow [2023-08-31 20:42:20,726 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 189 transitions, 396 flow [2023-08-31 20:42:20,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 189 transitions, 396 flow [2023-08-31 20:42:20,760 INFO L130 PetriNetUnfolder]: 40/319 cut-off events. [2023-08-31 20:42:20,761 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:42:20,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 40/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1079 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2023-08-31 20:42:20,771 INFO L119 LiptonReduction]: Number of co-enabled transitions 14696 [2023-08-31 20:42:23,752 INFO L134 LiptonReduction]: Checked pairs total: 47415 [2023-08-31 20:42:23,753 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-31 20:42:23,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:23,756 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;@4bdf981d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:23,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:23,763 INFO L130 PetriNetUnfolder]: 11/71 cut-off events. [2023-08-31 20:42:23,763 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 20:42:23,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:23,763 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:42:23,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:23,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:23,764 INFO L85 PathProgramCache]: Analyzing trace with hash -225953728, now seen corresponding path program 1 times [2023-08-31 20:42:23,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:23,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558601279] [2023-08-31 20:42:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:23,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:23,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:23,823 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:23,824 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:23,824 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:23,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:42:23,824 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:23,828 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:23,829 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:23,829 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:42:23,860 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:42:23,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 235 transitions, 500 flow [2023-08-31 20:42:23,945 INFO L130 PetriNetUnfolder]: 62/488 cut-off events. [2023-08-31 20:42:23,946 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:42:23,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 488 events. 62/488 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1802 event pairs, 1 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 327. Up to 16 conditions per place. [2023-08-31 20:42:23,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 235 transitions, 500 flow [2023-08-31 20:42:23,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 235 transitions, 500 flow [2023-08-31 20:42:23,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:23,954 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 235 transitions, 500 flow [2023-08-31 20:42:23,954 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 235 transitions, 500 flow [2023-08-31 20:42:23,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 235 transitions, 500 flow [2023-08-31 20:42:24,005 INFO L130 PetriNetUnfolder]: 62/488 cut-off events. [2023-08-31 20:42:24,005 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:42:24,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 488 events. 62/488 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1802 event pairs, 1 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 327. Up to 16 conditions per place. [2023-08-31 20:42:24,030 INFO L119 LiptonReduction]: Number of co-enabled transitions 28248 [2023-08-31 20:42:27,340 INFO L134 LiptonReduction]: Checked pairs total: 101367 [2023-08-31 20:42:27,340 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-31 20:42:27,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:27,343 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;@4bdf981d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:27,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:27,352 INFO L130 PetriNetUnfolder]: 22/125 cut-off events. [2023-08-31 20:42:27,353 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 20:42:27,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:27,353 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:42:27,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:27,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1440451685, now seen corresponding path program 1 times [2023-08-31 20:42:27,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:27,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296741082] [2023-08-31 20:42:27,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:27,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:27,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:27,437 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:27,437 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:27,438 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:27,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:42:27,438 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:27,439 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:27,439 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:27,440 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:42:27,473 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:42:27,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 281 transitions, 606 flow [2023-08-31 20:42:27,579 INFO L130 PetriNetUnfolder]: 96/745 cut-off events. [2023-08-31 20:42:27,579 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:42:27,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 745 events. 96/745 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3092 event pairs, 6 based on Foata normal form. 0/612 useless extension candidates. Maximal degree in co-relation 508. Up to 32 conditions per place. [2023-08-31 20:42:27,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 281 transitions, 606 flow [2023-08-31 20:42:27,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 281 transitions, 606 flow [2023-08-31 20:42:27,598 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:27,598 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 281 transitions, 606 flow [2023-08-31 20:42:27,598 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 281 transitions, 606 flow [2023-08-31 20:42:27,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 281 transitions, 606 flow [2023-08-31 20:42:27,701 INFO L130 PetriNetUnfolder]: 96/745 cut-off events. [2023-08-31 20:42:27,701 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:42:27,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 745 events. 96/745 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3092 event pairs, 6 based on Foata normal form. 0/612 useless extension candidates. Maximal degree in co-relation 508. Up to 32 conditions per place. [2023-08-31 20:42:27,737 INFO L119 LiptonReduction]: Number of co-enabled transitions 45936 [2023-08-31 20:42:31,141 INFO L134 LiptonReduction]: Checked pairs total: 177141 [2023-08-31 20:42:31,142 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-08-31 20:42:31,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:31,144 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;@4bdf981d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:31,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:31,160 INFO L130 PetriNetUnfolder]: 34/186 cut-off events. [2023-08-31 20:42:31,160 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 20:42:31,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:31,160 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:31,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:31,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:31,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1488763881, now seen corresponding path program 1 times [2023-08-31 20:42:31,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:31,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830641771] [2023-08-31 20:42:31,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:31,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:31,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:31,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:31,242 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:31,242 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:31,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:42:31,243 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:31,243 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:31,244 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:31,244 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:42:31,270 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:42:31,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 327 transitions, 714 flow [2023-08-31 20:42:31,463 INFO L130 PetriNetUnfolder]: 158/1182 cut-off events. [2023-08-31 20:42:31,463 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:42:31,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 1182 events. 158/1182 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5739 event pairs, 23 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 790. Up to 80 conditions per place. [2023-08-31 20:42:31,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 327 transitions, 714 flow [2023-08-31 20:42:31,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 327 transitions, 714 flow [2023-08-31 20:42:31,500 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:31,500 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 295 places, 327 transitions, 714 flow [2023-08-31 20:42:31,501 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 295 places, 327 transitions, 714 flow [2023-08-31 20:42:31,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 327 transitions, 714 flow [2023-08-31 20:42:31,681 INFO L130 PetriNetUnfolder]: 158/1182 cut-off events. [2023-08-31 20:42:31,681 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:42:31,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 1182 events. 158/1182 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5739 event pairs, 23 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 790. Up to 80 conditions per place. [2023-08-31 20:42:31,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 67760 [2023-08-31 20:42:35,048 INFO L134 LiptonReduction]: Checked pairs total: 271299 [2023-08-31 20:42:35,048 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-08-31 20:42:35,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:35,050 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;@4bdf981d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:35,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:35,072 INFO L130 PetriNetUnfolder]: 48/255 cut-off events. [2023-08-31 20:42:35,072 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-31 20:42:35,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:35,072 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:35,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:35,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:35,073 INFO L85 PathProgramCache]: Analyzing trace with hash -705922738, now seen corresponding path program 1 times [2023-08-31 20:42:35,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:35,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106196363] [2023-08-31 20:42:35,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:35,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:35,097 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:35,115 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:35,115 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:35,115 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:35,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:42:35,116 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:35,117 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:35,117 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:35,117 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:42:35,139 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:42:35,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 373 transitions, 824 flow [2023-08-31 20:42:35,573 INFO L130 PetriNetUnfolder]: 284/1987 cut-off events. [2023-08-31 20:42:35,574 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:42:35,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 1987 events. 284/1987 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 11905 event pairs, 72 based on Foata normal form. 0/1672 useless extension candidates. Maximal degree in co-relation 1281. Up to 192 conditions per place. [2023-08-31 20:42:35,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 373 transitions, 824 flow [2023-08-31 20:42:35,625 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 373 transitions, 824 flow [2023-08-31 20:42:35,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:35,629 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 336 places, 373 transitions, 824 flow [2023-08-31 20:42:35,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 336 places, 373 transitions, 824 flow [2023-08-31 20:42:35,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 373 transitions, 824 flow [2023-08-31 20:42:36,059 INFO L130 PetriNetUnfolder]: 284/1987 cut-off events. [2023-08-31 20:42:36,059 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:42:36,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 1987 events. 284/1987 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 11905 event pairs, 72 based on Foata normal form. 0/1672 useless extension candidates. Maximal degree in co-relation 1281. Up to 192 conditions per place. [2023-08-31 20:42:36,179 INFO L119 LiptonReduction]: Number of co-enabled transitions 93720 [2023-08-31 20:42:39,825 INFO L134 LiptonReduction]: Checked pairs total: 380522 [2023-08-31 20:42:39,825 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-08-31 20:42:39,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:39,828 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;@4bdf981d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:39,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:39,864 INFO L130 PetriNetUnfolder]: 58/322 cut-off events. [2023-08-31 20:42:39,864 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-08-31 20:42:39,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:39,865 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:39,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:39,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1543952136, now seen corresponding path program 1 times [2023-08-31 20:42:39,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:39,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625258265] [2023-08-31 20:42:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:39,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:39,909 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:39,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:39,936 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:39,936 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:39,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:42:39,937 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:39,937 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:39,937 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:39,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:42:39,981 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:42:39,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 419 transitions, 936 flow [2023-08-31 20:42:40,772 INFO L130 PetriNetUnfolder]: 554/3544 cut-off events. [2023-08-31 20:42:40,772 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:42:40,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4042 conditions, 3544 events. 554/3544 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 25342 event pairs, 201 based on Foata normal form. 0/3018 useless extension candidates. Maximal degree in co-relation 2205. Up to 448 conditions per place. [2023-08-31 20:42:40,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 419 transitions, 936 flow [2023-08-31 20:42:40,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 377 places, 419 transitions, 936 flow [2023-08-31 20:42:40,854 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:40,855 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 377 places, 419 transitions, 936 flow [2023-08-31 20:42:40,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 377 places, 419 transitions, 936 flow [2023-08-31 20:42:40,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 419 transitions, 936 flow [2023-08-31 20:42:41,810 INFO L130 PetriNetUnfolder]: 554/3544 cut-off events. [2023-08-31 20:42:41,810 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:42:41,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4042 conditions, 3544 events. 554/3544 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 25342 event pairs, 201 based on Foata normal form. 0/3018 useless extension candidates. Maximal degree in co-relation 2205. Up to 448 conditions per place. [2023-08-31 20:42:41,988 INFO L119 LiptonReduction]: Number of co-enabled transitions 123816 [2023-08-31 20:42:45,636 INFO L134 LiptonReduction]: Checked pairs total: 521426 [2023-08-31 20:42:45,636 INFO L136 LiptonReduction]: Total number of compositions: 229 [2023-08-31 20:42:45,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:45,638 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;@4bdf981d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:45,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:45,682 INFO L130 PetriNetUnfolder]: 79/421 cut-off events. [2023-08-31 20:42:45,683 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-31 20:42:45,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:45,683 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:45,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:45,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash -559088091, now seen corresponding path program 1 times [2023-08-31 20:42:45,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:45,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032737744] [2023-08-31 20:42:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:45,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:45,725 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:45,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:45,761 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:45,761 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:45,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:42:45,761 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:45,761 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:45,762 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:45,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:42:45,804 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:42:45,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 465 transitions, 1050 flow [2023-08-31 20:42:47,438 INFO L130 PetriNetUnfolder]: 1144/6637 cut-off events. [2023-08-31 20:42:47,438 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:42:47,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7722 conditions, 6637 events. 1144/6637 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 56990 event pairs, 522 based on Foata normal form. 0/5708 useless extension candidates. Maximal degree in co-relation 4026. Up to 1024 conditions per place. [2023-08-31 20:42:47,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 418 places, 465 transitions, 1050 flow [2023-08-31 20:42:47,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 418 places, 465 transitions, 1050 flow [2023-08-31 20:42:47,654 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:47,654 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 418 places, 465 transitions, 1050 flow [2023-08-31 20:42:47,655 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 418 places, 465 transitions, 1050 flow [2023-08-31 20:42:47,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 465 transitions, 1050 flow [2023-08-31 20:42:49,250 INFO L130 PetriNetUnfolder]: 1144/6637 cut-off events. [2023-08-31 20:42:49,250 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:42:49,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7722 conditions, 6637 events. 1144/6637 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 56990 event pairs, 522 based on Foata normal form. 0/5708 useless extension candidates. Maximal degree in co-relation 4026. Up to 1024 conditions per place. [2023-08-31 20:42:49,650 INFO L119 LiptonReduction]: Number of co-enabled transitions 158048 [2023-08-31 20:42:53,600 INFO L134 LiptonReduction]: Checked pairs total: 758952 [2023-08-31 20:42:53,600 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-08-31 20:42:53,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:53,602 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;@4bdf981d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:53,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:53,669 INFO L130 PetriNetUnfolder]: 116/566 cut-off events. [2023-08-31 20:42:53,669 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-08-31 20:42:53,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:53,669 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:53,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:53,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:53,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1218988869, now seen corresponding path program 1 times [2023-08-31 20:42:53,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:53,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157940258] [2023-08-31 20:42:53,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:53,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:53,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:53,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:53,721 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:53,721 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:53,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:42:53,722 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:53,724 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:53,724 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:53,726 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:42:53,756 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:42:53,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 511 transitions, 1166 flow [2023-08-31 20:42:56,921 INFO L130 PetriNetUnfolder]: 2438/12866 cut-off events. [2023-08-31 20:42:56,921 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:42:57,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15243 conditions, 12866 events. 2438/12866 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 128398 event pairs, 1291 based on Foata normal form. 0/11150 useless extension candidates. Maximal degree in co-relation 7704. Up to 2304 conditions per place. [2023-08-31 20:42:57,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 459 places, 511 transitions, 1166 flow [2023-08-31 20:42:57,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 511 transitions, 1166 flow [2023-08-31 20:42:57,274 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:57,274 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 459 places, 511 transitions, 1166 flow [2023-08-31 20:42:57,274 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 459 places, 511 transitions, 1166 flow [2023-08-31 20:42:57,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 511 transitions, 1166 flow [2023-08-31 20:43:00,344 INFO L130 PetriNetUnfolder]: 2438/12866 cut-off events. [2023-08-31 20:43:00,345 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:43:00,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15243 conditions, 12866 events. 2438/12866 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 128398 event pairs, 1291 based on Foata normal form. 0/11150 useless extension candidates. Maximal degree in co-relation 7704. Up to 2304 conditions per place. [2023-08-31 20:43:01,414 INFO L119 LiptonReduction]: Number of co-enabled transitions 196416 [2023-08-31 20:43:05,352 INFO L134 LiptonReduction]: Checked pairs total: 846233 [2023-08-31 20:43:05,352 INFO L136 LiptonReduction]: Total number of compositions: 266 [2023-08-31 20:43:05,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:43:05,354 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;@4bdf981d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:43:05,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:43:05,461 INFO L130 PetriNetUnfolder]: 163/749 cut-off events. [2023-08-31 20:43:05,462 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-08-31 20:43:05,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:43:05,462 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:43:05,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:43:05,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:43:05,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1546647936, now seen corresponding path program 1 times [2023-08-31 20:43:05,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:43:05,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103271344] [2023-08-31 20:43:05,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:43:05,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:43:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:43:05,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:43:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:43:05,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:43:05,505 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:43:05,505 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:43:05,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:43:05,505 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:43:05,506 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:43:05,506 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:43:05,506 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:43:05,543 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:43:05,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 557 transitions, 1284 flow [2023-08-31 20:43:12,622 INFO L130 PetriNetUnfolder]: 5268/25495 cut-off events. [2023-08-31 20:43:12,622 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:43:13,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30701 conditions, 25495 events. 5268/25495 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 289414 event pairs, 3084 based on Foata normal form. 0/22224 useless extension candidates. Maximal degree in co-relation 15223. Up to 5120 conditions per place. [2023-08-31 20:43:13,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 500 places, 557 transitions, 1284 flow [2023-08-31 20:43:13,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 500 places, 557 transitions, 1284 flow [2023-08-31 20:43:13,472 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:43:13,472 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 500 places, 557 transitions, 1284 flow [2023-08-31 20:43:13,472 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 500 places, 557 transitions, 1284 flow [2023-08-31 20:43:13,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 557 transitions, 1284 flow [2023-08-31 20:43:20,403 INFO L130 PetriNetUnfolder]: 5268/25495 cut-off events. [2023-08-31 20:43:20,404 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:43:20,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30701 conditions, 25495 events. 5268/25495 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 289414 event pairs, 3084 based on Foata normal form. 0/22224 useless extension candidates. Maximal degree in co-relation 15223. Up to 5120 conditions per place. [2023-08-31 20:43:22,475 INFO L119 LiptonReduction]: Number of co-enabled transitions 238920 [2023-08-31 20:43:26,255 INFO L134 LiptonReduction]: Checked pairs total: 1029138 [2023-08-31 20:43:26,255 INFO L136 LiptonReduction]: Total number of compositions: 283 [2023-08-31 20:43:26,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:43:26,257 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;@4bdf981d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:43:26,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:43:26,377 INFO L130 PetriNetUnfolder]: 239/1015 cut-off events. [2023-08-31 20:43:26,377 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-08-31 20:43:26,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:43:26,377 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:43:26,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:43:26,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:43:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2115053160, now seen corresponding path program 1 times [2023-08-31 20:43:26,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:43:26,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758523760] [2023-08-31 20:43:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:43:26,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:43:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:43:26,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:43:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:43:26,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:43:26,433 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:43:26,433 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:43:26,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:43:26,434 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:43:26,434 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:43:26,435 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:43:26,435 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:43:26,472 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:43:26,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 541 places, 603 transitions, 1404 flow [2023-08-31 20:43:45,292 INFO L130 PetriNetUnfolder]: 11426/51180 cut-off events. [2023-08-31 20:43:45,292 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:43:47,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62544 conditions, 51180 events. 11426/51180 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 645450 event pairs, 7181 based on Foata normal form. 0/44818 useless extension candidates. Maximal degree in co-relation 30679. Up to 11264 conditions per place. [2023-08-31 20:43:47,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 541 places, 603 transitions, 1404 flow [2023-08-31 20:43:48,070 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 541 places, 603 transitions, 1404 flow [2023-08-31 20:43:48,070 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:43:48,071 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 541 places, 603 transitions, 1404 flow [2023-08-31 20:43:48,071 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 541 places, 603 transitions, 1404 flow [2023-08-31 20:43:48,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 541 places, 603 transitions, 1404 flow [2023-08-31 20:44:03,169 INFO L130 PetriNetUnfolder]: 11426/51180 cut-off events. [2023-08-31 20:44:03,169 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:44:05,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62544 conditions, 51180 events. 11426/51180 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 645450 event pairs, 7181 based on Foata normal form. 0/44818 useless extension candidates. Maximal degree in co-relation 30679. Up to 11264 conditions per place. [2023-08-31 20:44:09,951 INFO L119 LiptonReduction]: Number of co-enabled transitions 285560 [2023-08-31 20:44:14,302 INFO L134 LiptonReduction]: Checked pairs total: 1414465 [2023-08-31 20:44:14,302 INFO L136 LiptonReduction]: Total number of compositions: 299 [2023-08-31 20:44:14,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:44:14,303 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;@4bdf981d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:44:14,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:44:14,481 INFO L130 PetriNetUnfolder]: 366/1414 cut-off events. [2023-08-31 20:44:14,482 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-08-31 20:44:14,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:44:14,482 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:44:14,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:44:14,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:44:14,482 INFO L85 PathProgramCache]: Analyzing trace with hash 267928505, now seen corresponding path program 1 times [2023-08-31 20:44:14,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:44:14,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211214393] [2023-08-31 20:44:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:44:14,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:44:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:14,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:44:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:14,525 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:44:14,526 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:44:14,526 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:44:14,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:44:14,526 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:44:14,527 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:44:14,527 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:44:14,527 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:44:14,563 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:44:14,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 582 places, 649 transitions, 1526 flow