./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.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_60-invariant_racefree.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 ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --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 20:58:19,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:58:19,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:58:19,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:58:19,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:58:19,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:58:19,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:58:19,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:58:19,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:58:19,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:58:19,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:58:19,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:58:19,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:58:19,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:58:19,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:58:19,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:58:19,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:58:19,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:58:19,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:58:19,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:58:19,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:58:19,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:58:19,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:58:19,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:58:19,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:58:19,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:58:19,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:58:19,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:58:19,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:58:19,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:58:19,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:58:19,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:58:19,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:58:19,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:58:19,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:58:19,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:58:19,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:58:19,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:58:19,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:58:19,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:58:19,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:58:19,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:58:19,152 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:58:19,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:58:19,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:58:19,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:58:19,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:58:19,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:58:19,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:58:19,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:58:19,160 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:58:19,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:58:19,161 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:58:19,161 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:58:19,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:58:19,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:58:19,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:58:19,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:58:19,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:58:19,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:58:19,162 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:58:19,162 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:58:19,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:58:19,162 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:58:19,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:58:19,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:58:19,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:58:19,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:58:19,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:58:19,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:58:19,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:58:19,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:58:19,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:58:19,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:58:19,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:58:19,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:58:19,164 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:58:19,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:58:19,165 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:58:19,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:58:19,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:58:19,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:58:19,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:58:19,410 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:58:19,410 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:58:19,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-31 20:58:20,472 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:58:20,687 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:58:20,694 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-31 20:58:20,717 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7592e67/fdeb585e19e24ad88d2d172ab3ed16b2/FLAG6faab1786 [2023-08-31 20:58:20,741 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7592e67/fdeb585e19e24ad88d2d172ab3ed16b2 [2023-08-31 20:58:20,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:58:20,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:58:20,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:58:20,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:58:20,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:58:20,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:58:20" (1/1) ... [2023-08-31 20:58:20,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6336dcfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:20, skipping insertion in model container [2023-08-31 20:58:20,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:58:20" (1/1) ... [2023-08-31 20:58:20,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:58:20,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:58:21,028 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_60-invariant_racefree.i[30176,30189] [2023-08-31 20:58:21,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:58:21,058 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:58:21,090 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_60-invariant_racefree.i[30176,30189] [2023-08-31 20:58:21,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:58:21,164 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:58:21,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21 WrapperNode [2023-08-31 20:58:21,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:58:21,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:58:21,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:58:21,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:58:21,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,219 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 176 [2023-08-31 20:58:21,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:58:21,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:58:21,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:58:21,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:58:21,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,259 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:58:21,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:58:21,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:58:21,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:58:21,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:58:21,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:58:21,296 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 20:58:21,349 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 20:58:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:58:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:58:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:58:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:58:21,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:58:21,370 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:58:21,370 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:58:21,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:58:21,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:58:21,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:58:21,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:58:21,371 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 20:58:21,474 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:58:21,475 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:58:21,671 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:58:21,677 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:58:21,677 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-31 20:58:21,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:58:21 BoogieIcfgContainer [2023-08-31 20:58:21,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:58:21,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:58:21,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:58:21,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:58:21,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:58:20" (1/3) ... [2023-08-31 20:58:21,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7d5fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:58:21, skipping insertion in model container [2023-08-31 20:58:21,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21" (2/3) ... [2023-08-31 20:58:21,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7d5fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:58:21, skipping insertion in model container [2023-08-31 20:58:21,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:58:21" (3/3) ... [2023-08-31 20:58:21,699 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-08-31 20:58:21,704 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:58:21,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:58:21,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-31 20:58:21,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:58:21,795 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:58:21,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 183 transitions, 374 flow [2023-08-31 20:58:21,882 INFO L130 PetriNetUnfolder]: 33/262 cut-off events. [2023-08-31 20:58:21,883 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:58:21,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 262 events. 33/262 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1080 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 150. Up to 6 conditions per place. [2023-08-31 20:58:21,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 183 transitions, 374 flow [2023-08-31 20:58:21,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 178 transitions, 361 flow [2023-08-31 20:58:21,899 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:21,909 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 178 transitions, 361 flow [2023-08-31 20:58:21,911 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 178 transitions, 361 flow [2023-08-31 20:58:21,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 178 transitions, 361 flow [2023-08-31 20:58:21,975 INFO L130 PetriNetUnfolder]: 32/257 cut-off events. [2023-08-31 20:58:21,984 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:58:21,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 257 events. 32/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1062 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 150. Up to 6 conditions per place. [2023-08-31 20:58:21,991 INFO L119 LiptonReduction]: Number of co-enabled transitions 11220 [2023-08-31 20:58:24,308 INFO L134 LiptonReduction]: Checked pairs total: 43507 [2023-08-31 20:58:24,308 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-31 20:58:24,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:24,321 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;@195b3c4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:24,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:24,325 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2023-08-31 20:58:24,325 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:58:24,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:24,326 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:58:24,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:24,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:24,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1910529066, now seen corresponding path program 1 times [2023-08-31 20:58:24,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:24,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960683396] [2023-08-31 20:58:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:24,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:24,404 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:24,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:24,429 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:24,430 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:24,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:58:24,432 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:24,433 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:24,434 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:24,434 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:58:24,451 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:58:24,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 251 transitions, 520 flow [2023-08-31 20:58:24,507 INFO L130 PetriNetUnfolder]: 57/439 cut-off events. [2023-08-31 20:58:24,508 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:58:24,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 439 events. 57/439 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2030 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 264. Up to 9 conditions per place. [2023-08-31 20:58:24,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 251 transitions, 520 flow [2023-08-31 20:58:24,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 251 transitions, 520 flow [2023-08-31 20:58:24,513 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:24,513 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 251 transitions, 520 flow [2023-08-31 20:58:24,514 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 251 transitions, 520 flow [2023-08-31 20:58:24,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 251 transitions, 520 flow [2023-08-31 20:58:24,546 INFO L130 PetriNetUnfolder]: 57/439 cut-off events. [2023-08-31 20:58:24,546 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:58:24,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 439 events. 57/439 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2030 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 264. Up to 9 conditions per place. [2023-08-31 20:58:24,561 INFO L119 LiptonReduction]: Number of co-enabled transitions 32604 [2023-08-31 20:58:26,686 INFO L134 LiptonReduction]: Checked pairs total: 156864 [2023-08-31 20:58:26,686 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-31 20:58:26,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:26,688 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;@195b3c4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:26,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:26,694 INFO L130 PetriNetUnfolder]: 13/103 cut-off events. [2023-08-31 20:58:26,694 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 20:58:26,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:26,694 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:58:26,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:26,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:26,695 INFO L85 PathProgramCache]: Analyzing trace with hash 113288243, now seen corresponding path program 1 times [2023-08-31 20:58:26,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:26,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143105036] [2023-08-31 20:58:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:26,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:26,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:26,773 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:26,778 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:26,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:26,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:58:26,779 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:26,780 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:26,780 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:26,781 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:58:26,807 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:58:26,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 319 transitions, 668 flow [2023-08-31 20:58:26,888 INFO L130 PetriNetUnfolder]: 86/659 cut-off events. [2023-08-31 20:58:26,888 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:58:26,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 659 events. 86/659 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3192 event pairs, 1 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 447. Up to 16 conditions per place. [2023-08-31 20:58:26,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 319 transitions, 668 flow [2023-08-31 20:58:26,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 319 transitions, 668 flow [2023-08-31 20:58:26,903 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:26,903 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 282 places, 319 transitions, 668 flow [2023-08-31 20:58:26,904 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 282 places, 319 transitions, 668 flow [2023-08-31 20:58:26,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 319 transitions, 668 flow [2023-08-31 20:58:26,971 INFO L130 PetriNetUnfolder]: 86/659 cut-off events. [2023-08-31 20:58:26,971 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:58:26,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 659 events. 86/659 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3192 event pairs, 1 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 447. Up to 16 conditions per place. [2023-08-31 20:58:26,993 INFO L119 LiptonReduction]: Number of co-enabled transitions 62568 [2023-08-31 20:58:29,117 INFO L134 LiptonReduction]: Checked pairs total: 282961 [2023-08-31 20:58:29,119 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-31 20:58:29,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:29,123 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;@195b3c4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:29,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:29,139 INFO L130 PetriNetUnfolder]: 30/190 cut-off events. [2023-08-31 20:58:29,139 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 20:58:29,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:29,140 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:58:29,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:29,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1682674655, now seen corresponding path program 1 times [2023-08-31 20:58:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:29,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877375038] [2023-08-31 20:58:29,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:29,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:29,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:29,198 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:29,198 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:29,199 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:29,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:58:29,199 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:29,199 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:29,200 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:29,200 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:58:29,225 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:58:29,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 387 transitions, 818 flow [2023-08-31 20:58:29,357 INFO L130 PetriNetUnfolder]: 127/967 cut-off events. [2023-08-31 20:58:29,357 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:58:29,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 967 events. 127/967 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4919 event pairs, 6 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 679. Up to 32 conditions per place. [2023-08-31 20:58:29,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 387 transitions, 818 flow [2023-08-31 20:58:29,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 387 transitions, 818 flow [2023-08-31 20:58:29,376 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:29,376 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 341 places, 387 transitions, 818 flow [2023-08-31 20:58:29,377 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 341 places, 387 transitions, 818 flow [2023-08-31 20:58:29,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 387 transitions, 818 flow [2023-08-31 20:58:29,494 INFO L130 PetriNetUnfolder]: 127/967 cut-off events. [2023-08-31 20:58:29,495 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:58:29,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 967 events. 127/967 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4919 event pairs, 6 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 679. Up to 32 conditions per place. [2023-08-31 20:58:29,535 INFO L119 LiptonReduction]: Number of co-enabled transitions 101640 [2023-08-31 20:58:31,767 INFO L134 LiptonReduction]: Checked pairs total: 469551 [2023-08-31 20:58:31,767 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-08-31 20:58:31,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:31,769 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;@195b3c4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:31,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:31,783 INFO L130 PetriNetUnfolder]: 47/281 cut-off events. [2023-08-31 20:58:31,784 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-31 20:58:31,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:31,784 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:31,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:31,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:31,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1092659880, now seen corresponding path program 1 times [2023-08-31 20:58:31,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:31,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924120981] [2023-08-31 20:58:31,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:31,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:31,817 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:31,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:31,835 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:31,836 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:31,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:58:31,836 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:31,836 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:31,837 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:31,837 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:58:31,856 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:58:31,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 455 transitions, 970 flow [2023-08-31 20:58:32,061 INFO L130 PetriNetUnfolder]: 196/1455 cut-off events. [2023-08-31 20:58:32,061 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:58:32,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1455 events. 196/1455 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 8042 event pairs, 23 based on Foata normal form. 0/1183 useless extension candidates. Maximal degree in co-relation 1012. Up to 80 conditions per place. [2023-08-31 20:58:32,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 400 places, 455 transitions, 970 flow [2023-08-31 20:58:32,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 400 places, 455 transitions, 970 flow [2023-08-31 20:58:32,129 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:32,129 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 400 places, 455 transitions, 970 flow [2023-08-31 20:58:32,130 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 400 places, 455 transitions, 970 flow [2023-08-31 20:58:32,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 455 transitions, 970 flow [2023-08-31 20:58:32,364 INFO L130 PetriNetUnfolder]: 196/1455 cut-off events. [2023-08-31 20:58:32,365 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:58:32,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1455 events. 196/1455 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 8042 event pairs, 23 based on Foata normal form. 0/1183 useless extension candidates. Maximal degree in co-relation 1012. Up to 80 conditions per place. [2023-08-31 20:58:32,449 INFO L119 LiptonReduction]: Number of co-enabled transitions 149820 [2023-08-31 20:58:34,627 INFO L134 LiptonReduction]: Checked pairs total: 605304 [2023-08-31 20:58:34,627 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-08-31 20:58:34,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:34,629 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;@195b3c4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:34,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:34,650 INFO L130 PetriNetUnfolder]: 66/375 cut-off events. [2023-08-31 20:58:34,651 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-31 20:58:34,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:34,651 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:34,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:34,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:34,652 INFO L85 PathProgramCache]: Analyzing trace with hash -294523383, now seen corresponding path program 1 times [2023-08-31 20:58:34,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:34,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322448134] [2023-08-31 20:58:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:34,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:34,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:34,734 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:34,734 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:34,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:58:34,735 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:34,735 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:34,736 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:34,736 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:58:34,755 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:58:34,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 523 transitions, 1124 flow [2023-08-31 20:58:35,156 INFO L130 PetriNetUnfolder]: 329/2311 cut-off events. [2023-08-31 20:58:35,156 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:58:35,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 2311 events. 329/2311 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 14592 event pairs, 72 based on Foata normal form. 0/1911 useless extension candidates. Maximal degree in co-relation 1554. Up to 192 conditions per place. [2023-08-31 20:58:35,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 459 places, 523 transitions, 1124 flow [2023-08-31 20:58:35,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 523 transitions, 1124 flow [2023-08-31 20:58:35,211 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:35,211 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 459 places, 523 transitions, 1124 flow [2023-08-31 20:58:35,212 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 459 places, 523 transitions, 1124 flow [2023-08-31 20:58:35,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 523 transitions, 1124 flow [2023-08-31 20:58:35,607 INFO L130 PetriNetUnfolder]: 329/2311 cut-off events. [2023-08-31 20:58:35,607 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:58:35,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 2311 events. 329/2311 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 14592 event pairs, 72 based on Foata normal form. 0/1911 useless extension candidates. Maximal degree in co-relation 1554. Up to 192 conditions per place. [2023-08-31 20:58:35,746 INFO L119 LiptonReduction]: Number of co-enabled transitions 207108 [2023-08-31 20:58:38,247 INFO L134 LiptonReduction]: Checked pairs total: 988801 [2023-08-31 20:58:38,248 INFO L136 LiptonReduction]: Total number of compositions: 272 [2023-08-31 20:58:38,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:38,267 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;@195b3c4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:38,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:38,299 INFO L130 PetriNetUnfolder]: 83/475 cut-off events. [2023-08-31 20:58:38,300 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-08-31 20:58:38,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:38,300 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:38,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:38,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:38,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1692316351, now seen corresponding path program 1 times [2023-08-31 20:58:38,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:38,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392146648] [2023-08-31 20:58:38,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:38,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:38,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:38,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:38,360 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:38,360 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:38,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:58:38,360 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:38,362 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:38,362 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:38,362 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:58:38,390 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:58:38,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 518 places, 591 transitions, 1280 flow [2023-08-31 20:58:39,295 INFO L130 PetriNetUnfolder]: 606/3919 cut-off events. [2023-08-31 20:58:39,295 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:58:39,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4417 conditions, 3919 events. 606/3919 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 28832 event pairs, 201 based on Foata normal form. 0/3295 useless extension candidates. Maximal degree in co-relation 2529. Up to 448 conditions per place. [2023-08-31 20:58:39,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 518 places, 591 transitions, 1280 flow [2023-08-31 20:58:39,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 518 places, 591 transitions, 1280 flow [2023-08-31 20:58:39,415 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:39,415 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 518 places, 591 transitions, 1280 flow [2023-08-31 20:58:39,415 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 518 places, 591 transitions, 1280 flow [2023-08-31 20:58:39,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 518 places, 591 transitions, 1280 flow [2023-08-31 20:58:40,302 INFO L130 PetriNetUnfolder]: 606/3919 cut-off events. [2023-08-31 20:58:40,303 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:58:40,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4417 conditions, 3919 events. 606/3919 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 28832 event pairs, 201 based on Foata normal form. 0/3295 useless extension candidates. Maximal degree in co-relation 2529. Up to 448 conditions per place. [2023-08-31 20:58:40,672 INFO L119 LiptonReduction]: Number of co-enabled transitions 273504 [2023-08-31 20:58:43,732 INFO L134 LiptonReduction]: Checked pairs total: 1328089 [2023-08-31 20:58:43,732 INFO L136 LiptonReduction]: Total number of compositions: 304 [2023-08-31 20:58:43,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:43,734 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;@195b3c4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:43,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:43,798 INFO L130 PetriNetUnfolder]: 108/594 cut-off events. [2023-08-31 20:58:43,798 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 20:58:43,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:43,798 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:43,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:43,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:43,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1207491410, now seen corresponding path program 1 times [2023-08-31 20:58:43,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:43,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846874720] [2023-08-31 20:58:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:43,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:43,833 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:43,849 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:43,853 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:43,854 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:43,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:58:43,854 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:43,854 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:43,855 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:43,855 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:58:43,893 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:58:43,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 577 places, 659 transitions, 1438 flow [2023-08-31 20:58:45,847 INFO L130 PetriNetUnfolder]: 1203/7063 cut-off events. [2023-08-31 20:58:45,848 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:58:46,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8148 conditions, 7063 events. 1203/7063 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 60667 event pairs, 522 based on Foata normal form. 0/6023 useless extension candidates. Maximal degree in co-relation 4401. Up to 1024 conditions per place. [2023-08-31 20:58:46,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 577 places, 659 transitions, 1438 flow [2023-08-31 20:58:46,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 577 places, 659 transitions, 1438 flow [2023-08-31 20:58:46,068 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:46,068 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 577 places, 659 transitions, 1438 flow [2023-08-31 20:58:46,068 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 577 places, 659 transitions, 1438 flow [2023-08-31 20:58:46,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 577 places, 659 transitions, 1438 flow [2023-08-31 20:58:47,877 INFO L130 PetriNetUnfolder]: 1203/7063 cut-off events. [2023-08-31 20:58:47,877 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:58:48,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8148 conditions, 7063 events. 1203/7063 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 60667 event pairs, 522 based on Foata normal form. 0/6023 useless extension candidates. Maximal degree in co-relation 4401. Up to 1024 conditions per place. [2023-08-31 20:58:48,430 INFO L119 LiptonReduction]: Number of co-enabled transitions 349008 [2023-08-31 20:58:51,451 INFO L134 LiptonReduction]: Checked pairs total: 1714341 [2023-08-31 20:58:51,452 INFO L136 LiptonReduction]: Total number of compositions: 335 [2023-08-31 20:58:51,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:51,453 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;@195b3c4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:51,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:51,581 INFO L130 PetriNetUnfolder]: 149/752 cut-off events. [2023-08-31 20:58:51,582 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-08-31 20:58:51,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:51,582 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:51,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:51,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1433540936, now seen corresponding path program 1 times [2023-08-31 20:58:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:51,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535011879] [2023-08-31 20:58:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:51,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:51,609 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:51,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:51,634 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:51,634 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:51,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:58:51,635 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:51,635 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:51,635 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:51,635 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:58:51,668 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:58:51,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 636 places, 727 transitions, 1598 flow [2023-08-31 20:58:55,597 INFO L130 PetriNetUnfolder]: 2504/13343 cut-off events. [2023-08-31 20:58:55,597 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:58:55,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15720 conditions, 13343 events. 2504/13343 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 132016 event pairs, 1291 based on Foata normal form. 0/11503 useless extension candidates. Maximal degree in co-relation 8130. Up to 2304 conditions per place. [2023-08-31 20:58:55,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 636 places, 727 transitions, 1598 flow [2023-08-31 20:58:56,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 636 places, 727 transitions, 1598 flow [2023-08-31 20:58:56,264 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:56,264 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 636 places, 727 transitions, 1598 flow [2023-08-31 20:58:56,265 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 636 places, 727 transitions, 1598 flow [2023-08-31 20:58:56,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 636 places, 727 transitions, 1598 flow [2023-08-31 20:59:00,216 INFO L130 PetriNetUnfolder]: 2504/13343 cut-off events. [2023-08-31 20:59:00,216 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:59:00,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15720 conditions, 13343 events. 2504/13343 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 132016 event pairs, 1291 based on Foata normal form. 0/11503 useless extension candidates. Maximal degree in co-relation 8130. Up to 2304 conditions per place. [2023-08-31 20:59:01,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 433620 [2023-08-31 20:59:05,337 INFO L134 LiptonReduction]: Checked pairs total: 2141464 [2023-08-31 20:59:05,337 INFO L136 LiptonReduction]: Total number of compositions: 364 [2023-08-31 20:59:05,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:59:05,339 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;@195b3c4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:59:05,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:59:05,436 INFO L130 PetriNetUnfolder]: 192/928 cut-off events. [2023-08-31 20:59:05,436 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-08-31 20:59:05,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:59:05,437 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:59:05,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:59:05,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:59:05,437 INFO L85 PathProgramCache]: Analyzing trace with hash 964287627, now seen corresponding path program 1 times [2023-08-31 20:59:05,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:59:05,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480737571] [2023-08-31 20:59:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:59:05,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:59:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:59:05,457 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:59:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:59:05,483 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:59:05,485 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:59:05,485 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:59:05,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:59:05,486 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:59:05,486 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:59:05,487 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:59:05,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:59:05,517 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:59:05,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 695 places, 795 transitions, 1760 flow [2023-08-31 20:59:14,133 INFO L130 PetriNetUnfolder]: 5341/26023 cut-off events. [2023-08-31 20:59:14,134 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:59:14,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31229 conditions, 26023 events. 5341/26023 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 293195 event pairs, 3084 based on Foata normal form. 0/22615 useless extension candidates. Maximal degree in co-relation 15700. Up to 5120 conditions per place. [2023-08-31 20:59:14,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 695 places, 795 transitions, 1760 flow [2023-08-31 20:59:15,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 695 places, 795 transitions, 1760 flow [2023-08-31 20:59:15,395 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:59:15,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 695 places, 795 transitions, 1760 flow [2023-08-31 20:59:15,395 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 695 places, 795 transitions, 1760 flow [2023-08-31 20:59:15,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 695 places, 795 transitions, 1760 flow [2023-08-31 20:59:24,261 INFO L130 PetriNetUnfolder]: 5341/26023 cut-off events. [2023-08-31 20:59:24,262 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:59:25,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31229 conditions, 26023 events. 5341/26023 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 293195 event pairs, 3084 based on Foata normal form. 0/22615 useless extension candidates. Maximal degree in co-relation 15700. Up to 5120 conditions per place. [2023-08-31 20:59:27,263 INFO L119 LiptonReduction]: Number of co-enabled transitions 527340 [2023-08-31 20:59:30,004 INFO L134 LiptonReduction]: Checked pairs total: 2621187 [2023-08-31 20:59:30,004 INFO L136 LiptonReduction]: Total number of compositions: 397 [2023-08-31 20:59:30,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:59:30,022 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;@195b3c4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:59:30,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:59:30,218 INFO L130 PetriNetUnfolder]: 244/1126 cut-off events. [2023-08-31 20:59:30,219 INFO L131 PetriNetUnfolder]: For 371/371 co-relation queries the response was YES. [2023-08-31 20:59:30,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:59:30,219 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:59:30,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:59:30,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:59:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1656152980, now seen corresponding path program 1 times [2023-08-31 20:59:30,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:59:30,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220441930] [2023-08-31 20:59:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:59:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:59:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:59:30,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:59:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:59:30,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:59:30,273 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:59:30,273 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:59:30,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:59:30,273 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:59:30,273 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:59:30,273 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:59:30,274 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:59:30,299 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:59:30,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 754 places, 863 transitions, 1924 flow [2023-08-31 20:59:49,339 INFO L130 PetriNetUnfolder]: 11506/51759 cut-off events. [2023-08-31 20:59:49,339 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:59:53,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63123 conditions, 51759 events. 11506/51759 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 650865 event pairs, 7181 based on Foata normal form. 0/45247 useless extension candidates. Maximal degree in co-relation 31208. Up to 11264 conditions per place. [2023-08-31 20:59:53,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 754 places, 863 transitions, 1924 flow [2023-08-31 20:59:53,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 754 places, 863 transitions, 1924 flow [2023-08-31 20:59:53,956 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:59:53,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 754 places, 863 transitions, 1924 flow [2023-08-31 20:59:53,957 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 754 places, 863 transitions, 1924 flow [2023-08-31 20:59:53,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 754 places, 863 transitions, 1924 flow [2023-08-31 21:00:14,063 INFO L130 PetriNetUnfolder]: 11506/51759 cut-off events. [2023-08-31 21:00:14,064 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 21:00:16,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63123 conditions, 51759 events. 11506/51759 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 650865 event pairs, 7181 based on Foata normal form. 0/45247 useless extension candidates. Maximal degree in co-relation 31208. Up to 11264 conditions per place. [2023-08-31 21:00:21,686 INFO L119 LiptonReduction]: Number of co-enabled transitions 630168 [2023-08-31 21:00:25,294 INFO L134 LiptonReduction]: Checked pairs total: 2673784 [2023-08-31 21:00:25,295 INFO L136 LiptonReduction]: Total number of compositions: 435 [2023-08-31 21:00:25,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:00:25,296 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;@195b3c4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:00:25,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 21:00:25,511 INFO L130 PetriNetUnfolder]: 320/1377 cut-off events. [2023-08-31 21:00:25,511 INFO L131 PetriNetUnfolder]: For 535/535 co-relation queries the response was YES. [2023-08-31 21:00:25,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:00:25,512 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:00:25,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:00:25,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:00:25,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1702133557, now seen corresponding path program 1 times [2023-08-31 21:00:25,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:00:25,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208060439] [2023-08-31 21:00:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:00:25,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:00:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:00:25,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:00:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:00:25,547 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:00:25,548 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:00:25,548 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 21:00:25,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 21:00:25,548 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:00:25,549 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 21:00:25,549 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:00:25,549 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 21:00:25,583 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 21:00:25,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 813 places, 931 transitions, 2090 flow [2023-08-31 21:01:07,865 INFO L130 PetriNetUnfolder]: 24839/104119 cut-off events. [2023-08-31 21:01:07,865 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 21:01:19,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128810 conditions, 104119 events. 24839/104119 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 1433266 event pairs, 16398 based on Foata normal form. 0/91431 useless extension candidates. Maximal degree in co-relation 63102. Up to 24576 conditions per place. [2023-08-31 21:01:19,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 813 places, 931 transitions, 2090 flow [2023-08-31 21:01:23,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 813 places, 931 transitions, 2090 flow [2023-08-31 21:01:23,309 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:01:23,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 813 places, 931 transitions, 2090 flow [2023-08-31 21:01:23,309 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 813 places, 931 transitions, 2090 flow [2023-08-31 21:01:23,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 813 places, 931 transitions, 2090 flow [2023-08-31 21:02:04,929 INFO L130 PetriNetUnfolder]: 24839/104119 cut-off events. [2023-08-31 21:02:04,929 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 21:02:15,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128810 conditions, 104119 events. 24839/104119 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 1433266 event pairs, 16398 based on Foata normal form. 0/91431 useless extension candidates. Maximal degree in co-relation 63102. Up to 24576 conditions per place. [2023-08-31 21:02:29,043 INFO L119 LiptonReduction]: Number of co-enabled transitions 742104 [2023-08-31 21:02:32,875 INFO L134 LiptonReduction]: Checked pairs total: 3723157 [2023-08-31 21:02:32,875 INFO L136 LiptonReduction]: Total number of compositions: 463 [2023-08-31 21:02:32,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:02:32,877 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;@195b3c4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:02:32,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 21:02:33,167 INFO L130 PetriNetUnfolder]: 420/1700 cut-off events. [2023-08-31 21:02:33,167 INFO L131 PetriNetUnfolder]: For 763/763 co-relation queries the response was YES. [2023-08-31 21:02:33,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:02:33,168 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:02:33,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:02:33,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:02:33,168 INFO L85 PathProgramCache]: Analyzing trace with hash -722883002, now seen corresponding path program 1 times [2023-08-31 21:02:33,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:02:33,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426517234] [2023-08-31 21:02:33,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:02:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:02:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:02:33,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:02:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:02:33,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:02:33,236 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:02:33,236 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 21:02:33,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 21:02:33,237 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:02:33,239 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 21:02:33,239 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:02:33,239 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 21:02:33,277 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 21:02:33,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 872 places, 999 transitions, 2258 flow