./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:34:01,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:34:01,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:34:01,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:34:01,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:34:01,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:34:01,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:34:01,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:34:01,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:34:01,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:34:01,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:34:01,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:34:01,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:34:01,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:34:01,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:34:01,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:34:01,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:34:01,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:34:01,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:34:01,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:34:01,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:34:01,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:34:01,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:34:01,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:34:01,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:34:01,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:34:01,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:34:01,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:34:01,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:34:01,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:34:01,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:34:01,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:34:01,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:34:01,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:34:01,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:34:01,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:34:01,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:34:01,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:34:01,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:34:01,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:34:01,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:34:01,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:34:01,253 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:34:01,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:34:01,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:34:01,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:34:01,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:34:01,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:34:01,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:34:01,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:34:01,256 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:34:01,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:34:01,256 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:34:01,256 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:34:01,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:34:01,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:34:01,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:34:01,258 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:34:01,258 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:34:01,258 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:34:01,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:34:01,259 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:34:01,259 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:34:01,259 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:34:01,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:34:01,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:34:01,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:34:01,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:34:01,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:34:01,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:34:01,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:34:01,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:34:01,262 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:34:01,262 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:34:01,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:34:01,262 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:34:01,263 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:34:01,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:34:01,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:34:01,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:34:01,575 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:34:01,575 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:34:01,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-09-01 00:34:02,857 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:34:03,126 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:34:03,126 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-09-01 00:34:03,136 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/870aea67d/95b8ae51f1bd42eb86b4f1bc3a6891db/FLAG386d65489 [2023-09-01 00:34:03,152 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/870aea67d/95b8ae51f1bd42eb86b4f1bc3a6891db [2023-09-01 00:34:03,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:34:03,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:34:03,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:34:03,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:34:03,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:34:03,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dbb61b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03, skipping insertion in model container [2023-09-01 00:34:03,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:34:03,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:34:03,470 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_12-ptr_racefree.i[30176,30189] [2023-09-01 00:34:03,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:34:03,507 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:34:03,539 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_12-ptr_racefree.i[30176,30189] [2023-09-01 00:34:03,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:34:03,584 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:34:03,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03 WrapperNode [2023-09-01 00:34:03,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:34:03,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:34:03,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:34:03,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:34:03,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,619 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-09-01 00:34:03,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:34:03,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:34:03,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:34:03,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:34:03,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,664 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:34:03,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:34:03,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:34:03,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:34:03,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03" (1/1) ... [2023-09-01 00:34:03,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:34:03,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:34:03,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 00:34:03,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 00:34:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:34:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:34:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:34:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:34:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:34:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:34:03,748 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:34:03,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:34:03,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:34:03,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:34:03,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:34:03,750 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:34:03,855 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:34:03,857 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:34:04,147 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:34:04,153 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:34:04,153 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 00:34:04,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:34:04 BoogieIcfgContainer [2023-09-01 00:34:04,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:34:04,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:34:04,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:34:04,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:34:04,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:34:03" (1/3) ... [2023-09-01 00:34:04,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0b4504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:34:04, skipping insertion in model container [2023-09-01 00:34:04,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:03" (2/3) ... [2023-09-01 00:34:04,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0b4504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:34:04, skipping insertion in model container [2023-09-01 00:34:04,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:34:04" (3/3) ... [2023-09-01 00:34:04,168 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2023-09-01 00:34:04,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:34:04,183 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-09-01 00:34:04,183 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:34:04,283 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:34:04,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 135 transitions, 278 flow [2023-09-01 00:34:04,390 INFO L130 PetriNetUnfolder]: 17/179 cut-off events. [2023-09-01 00:34:04,390 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:34:04,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 179 events. 17/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 523 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-09-01 00:34:04,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 135 transitions, 278 flow [2023-09-01 00:34:04,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 265 flow [2023-09-01 00:34:04,403 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:04,411 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 130 transitions, 265 flow [2023-09-01 00:34:04,413 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 130 transitions, 265 flow [2023-09-01 00:34:04,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 130 transitions, 265 flow [2023-09-01 00:34:04,457 INFO L130 PetriNetUnfolder]: 16/174 cut-off events. [2023-09-01 00:34:04,457 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:34:04,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 174 events. 16/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 498 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-09-01 00:34:04,460 INFO L119 LiptonReduction]: Number of co-enabled transitions 4100 [2023-09-01 00:34:07,790 INFO L134 LiptonReduction]: Checked pairs total: 8344 [2023-09-01 00:34:07,790 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-09-01 00:34:07,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:07,807 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f069faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:07,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:07,813 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2023-09-01 00:34:07,813 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:34:07,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:07,814 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:34:07,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:07,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:07,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2132718991, now seen corresponding path program 1 times [2023-09-01 00:34:07,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:07,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435534376] [2023-09-01 00:34:07,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:07,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:07,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:07,993 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:07,994 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:07,995 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:07,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:34:07,997 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:07,999 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:08,000 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:08,000 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:34:08,028 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:34:08,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 178 transitions, 374 flow [2023-09-01 00:34:08,106 INFO L130 PetriNetUnfolder]: 31/295 cut-off events. [2023-09-01 00:34:08,106 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:34:08,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 295 events. 31/295 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1036 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2023-09-01 00:34:08,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 178 transitions, 374 flow [2023-09-01 00:34:08,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 178 transitions, 374 flow [2023-09-01 00:34:08,114 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:08,114 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 178 transitions, 374 flow [2023-09-01 00:34:08,115 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 178 transitions, 374 flow [2023-09-01 00:34:08,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 178 transitions, 374 flow [2023-09-01 00:34:08,152 INFO L130 PetriNetUnfolder]: 31/295 cut-off events. [2023-09-01 00:34:08,153 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:34:08,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 295 events. 31/295 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1036 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2023-09-01 00:34:08,164 INFO L119 LiptonReduction]: Number of co-enabled transitions 12464 [2023-09-01 00:34:11,712 INFO L134 LiptonReduction]: Checked pairs total: 31137 [2023-09-01 00:34:11,713 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-09-01 00:34:11,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:11,716 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f069faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:11,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:11,724 INFO L130 PetriNetUnfolder]: 10/84 cut-off events. [2023-09-01 00:34:11,724 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:34:11,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:11,725 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:34:11,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:11,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1629499950, now seen corresponding path program 1 times [2023-09-01 00:34:11,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:11,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924787632] [2023-09-01 00:34:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:11,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:11,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:11,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:11,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:11,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:11,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:34:11,778 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:11,779 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:11,779 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:11,779 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:34:11,805 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:34:11,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 221 transitions, 472 flow [2023-09-01 00:34:11,868 INFO L130 PetriNetUnfolder]: 50/452 cut-off events. [2023-09-01 00:34:11,868 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:34:11,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 452 events. 50/452 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1779 event pairs, 1 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 303. Up to 16 conditions per place. [2023-09-01 00:34:11,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 221 transitions, 472 flow [2023-09-01 00:34:11,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 221 transitions, 472 flow [2023-09-01 00:34:11,877 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:11,877 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 221 transitions, 472 flow [2023-09-01 00:34:11,882 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 221 transitions, 472 flow [2023-09-01 00:34:11,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 221 transitions, 472 flow [2023-09-01 00:34:11,935 INFO L130 PetriNetUnfolder]: 50/452 cut-off events. [2023-09-01 00:34:11,935 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:34:11,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 452 events. 50/452 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1779 event pairs, 1 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 303. Up to 16 conditions per place. [2023-09-01 00:34:11,957 INFO L119 LiptonReduction]: Number of co-enabled transitions 24108 [2023-09-01 00:34:15,619 INFO L134 LiptonReduction]: Checked pairs total: 64755 [2023-09-01 00:34:15,620 INFO L136 LiptonReduction]: Total number of compositions: 178 [2023-09-01 00:34:15,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:15,623 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f069faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:15,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:15,636 INFO L130 PetriNetUnfolder]: 19/130 cut-off events. [2023-09-01 00:34:15,636 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:34:15,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:15,636 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:34:15,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:15,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:15,637 INFO L85 PathProgramCache]: Analyzing trace with hash -704816888, now seen corresponding path program 1 times [2023-09-01 00:34:15,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:15,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004703614] [2023-09-01 00:34:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:15,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:15,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:15,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:15,690 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:15,690 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:15,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:34:15,690 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:15,691 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:15,691 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:15,691 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:34:15,717 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:34:15,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 264 transitions, 572 flow [2023-09-01 00:34:15,836 INFO L130 PetriNetUnfolder]: 81/693 cut-off events. [2023-09-01 00:34:15,837 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:34:15,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 693 events. 81/693 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3111 event pairs, 6 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 472. Up to 32 conditions per place. [2023-09-01 00:34:15,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 264 transitions, 572 flow [2023-09-01 00:34:15,851 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 264 transitions, 572 flow [2023-09-01 00:34:15,851 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:15,852 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 264 transitions, 572 flow [2023-09-01 00:34:15,853 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 264 transitions, 572 flow [2023-09-01 00:34:15,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 264 transitions, 572 flow [2023-09-01 00:34:15,966 INFO L130 PetriNetUnfolder]: 81/693 cut-off events. [2023-09-01 00:34:15,967 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:34:15,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 693 events. 81/693 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3111 event pairs, 6 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 472. Up to 32 conditions per place. [2023-09-01 00:34:16,009 INFO L119 LiptonReduction]: Number of co-enabled transitions 39360 [2023-09-01 00:34:20,053 INFO L134 LiptonReduction]: Checked pairs total: 125466 [2023-09-01 00:34:20,054 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-09-01 00:34:20,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:20,058 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f069faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:20,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:20,075 INFO L130 PetriNetUnfolder]: 29/189 cut-off events. [2023-09-01 00:34:20,076 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 00:34:20,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:20,076 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:20,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:20,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1703596694, now seen corresponding path program 1 times [2023-09-01 00:34:20,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:20,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471202759] [2023-09-01 00:34:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:20,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:20,102 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:20,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:20,125 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:20,125 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:20,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:34:20,125 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:20,126 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:20,126 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:20,126 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:34:20,151 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:34:20,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 307 transitions, 674 flow [2023-09-01 00:34:20,361 INFO L130 PetriNetUnfolder]: 140/1106 cut-off events. [2023-09-01 00:34:20,362 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:34:20,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 1106 events. 140/1106 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5751 event pairs, 23 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 738. Up to 80 conditions per place. [2023-09-01 00:34:20,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 307 transitions, 674 flow [2023-09-01 00:34:20,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 307 transitions, 674 flow [2023-09-01 00:34:20,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:20,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 307 transitions, 674 flow [2023-09-01 00:34:20,386 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 307 transitions, 674 flow [2023-09-01 00:34:20,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 307 transitions, 674 flow [2023-09-01 00:34:20,583 INFO L130 PetriNetUnfolder]: 140/1106 cut-off events. [2023-09-01 00:34:20,583 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:34:20,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 1106 events. 140/1106 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5751 event pairs, 23 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 738. Up to 80 conditions per place. [2023-09-01 00:34:20,633 INFO L119 LiptonReduction]: Number of co-enabled transitions 58220 [2023-09-01 00:34:24,954 INFO L134 LiptonReduction]: Checked pairs total: 170662 [2023-09-01 00:34:24,954 INFO L136 LiptonReduction]: Total number of compositions: 235 [2023-09-01 00:34:24,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:24,956 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f069faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:24,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:24,983 INFO L130 PetriNetUnfolder]: 41/258 cut-off events. [2023-09-01 00:34:24,983 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 00:34:24,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:24,983 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:24,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:24,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:24,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2088532687, now seen corresponding path program 1 times [2023-09-01 00:34:24,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:24,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068724025] [2023-09-01 00:34:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:25,042 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:25,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:25,083 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:25,083 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:25,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:34:25,084 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:25,084 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:25,084 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:25,085 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:34:25,128 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:34:25,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 350 transitions, 778 flow [2023-09-01 00:34:25,452 INFO L130 PetriNetUnfolder]: 263/1871 cut-off events. [2023-09-01 00:34:25,452 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:34:25,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2103 conditions, 1871 events. 263/1871 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11712 event pairs, 72 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 1205. Up to 192 conditions per place. [2023-09-01 00:34:25,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 350 transitions, 778 flow [2023-09-01 00:34:25,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 316 places, 350 transitions, 778 flow [2023-09-01 00:34:25,510 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:25,510 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 316 places, 350 transitions, 778 flow [2023-09-01 00:34:25,510 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 316 places, 350 transitions, 778 flow [2023-09-01 00:34:25,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 350 transitions, 778 flow [2023-09-01 00:34:25,839 INFO L130 PetriNetUnfolder]: 263/1871 cut-off events. [2023-09-01 00:34:25,840 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:34:25,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2103 conditions, 1871 events. 263/1871 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11712 event pairs, 72 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 1205. Up to 192 conditions per place. [2023-09-01 00:34:25,941 INFO L119 LiptonReduction]: Number of co-enabled transitions 80688 [2023-09-01 00:34:30,582 INFO L134 LiptonReduction]: Checked pairs total: 269639 [2023-09-01 00:34:30,582 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-09-01 00:34:30,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:30,585 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f069faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:30,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:30,615 INFO L130 PetriNetUnfolder]: 56/341 cut-off events. [2023-09-01 00:34:30,616 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 00:34:30,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:30,616 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:30,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:30,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:30,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1652727797, now seen corresponding path program 1 times [2023-09-01 00:34:30,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:30,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536633333] [2023-09-01 00:34:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:30,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:30,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:30,663 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:30,663 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:30,663 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:30,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:34:30,664 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:30,664 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:30,664 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:30,665 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:34:30,697 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:34:30,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 393 transitions, 884 flow [2023-09-01 00:34:31,425 INFO L130 PetriNetUnfolder]: 530/3356 cut-off events. [2023-09-01 00:34:31,425 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:34:31,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3854 conditions, 3356 events. 530/3356 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25150 event pairs, 201 based on Foata normal form. 0/2538 useless extension candidates. Maximal degree in co-relation 2089. Up to 448 conditions per place. [2023-09-01 00:34:31,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 393 transitions, 884 flow [2023-09-01 00:34:31,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 393 transitions, 884 flow [2023-09-01 00:34:31,501 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:31,501 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 393 transitions, 884 flow [2023-09-01 00:34:31,501 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 393 transitions, 884 flow [2023-09-01 00:34:31,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 393 transitions, 884 flow [2023-09-01 00:34:32,259 INFO L130 PetriNetUnfolder]: 530/3356 cut-off events. [2023-09-01 00:34:32,259 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:34:32,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3854 conditions, 3356 events. 530/3356 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25150 event pairs, 201 based on Foata normal form. 0/2538 useless extension candidates. Maximal degree in co-relation 2089. Up to 448 conditions per place. [2023-09-01 00:34:32,449 INFO L119 LiptonReduction]: Number of co-enabled transitions 106764 [2023-09-01 00:34:37,413 INFO L134 LiptonReduction]: Checked pairs total: 365120 [2023-09-01 00:34:37,413 INFO L136 LiptonReduction]: Total number of compositions: 307 [2023-09-01 00:34:37,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:37,415 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f069faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:37,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:37,459 INFO L130 PetriNetUnfolder]: 76/452 cut-off events. [2023-09-01 00:34:37,460 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 00:34:37,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:37,460 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:37,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:37,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:37,461 INFO L85 PathProgramCache]: Analyzing trace with hash -466477162, now seen corresponding path program 1 times [2023-09-01 00:34:37,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:37,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29415063] [2023-09-01 00:34:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:37,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:37,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:37,540 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:37,541 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:37,541 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:37,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:34:37,541 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:37,542 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:37,542 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:37,542 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:34:37,579 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:34:37,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 436 transitions, 992 flow [2023-09-01 00:34:38,946 INFO L130 PetriNetUnfolder]: 1117/6313 cut-off events. [2023-09-01 00:34:38,947 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:34:39,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 6313 events. 1117/6313 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 55853 event pairs, 522 based on Foata normal form. 0/4831 useless extension candidates. Maximal degree in co-relation 3838. Up to 1024 conditions per place. [2023-09-01 00:34:39,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 392 places, 436 transitions, 992 flow [2023-09-01 00:34:39,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 392 places, 436 transitions, 992 flow [2023-09-01 00:34:39,127 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:39,127 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 392 places, 436 transitions, 992 flow [2023-09-01 00:34:39,128 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 392 places, 436 transitions, 992 flow [2023-09-01 00:34:39,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 436 transitions, 992 flow [2023-09-01 00:34:40,458 INFO L130 PetriNetUnfolder]: 1117/6313 cut-off events. [2023-09-01 00:34:40,458 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:34:40,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 6313 events. 1117/6313 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 55853 event pairs, 522 based on Foata normal form. 0/4831 useless extension candidates. Maximal degree in co-relation 3838. Up to 1024 conditions per place. [2023-09-01 00:34:40,804 INFO L119 LiptonReduction]: Number of co-enabled transitions 136448 [2023-09-01 00:34:46,259 INFO L134 LiptonReduction]: Checked pairs total: 473277 [2023-09-01 00:34:46,259 INFO L136 LiptonReduction]: Total number of compositions: 337 [2023-09-01 00:34:46,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:46,261 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f069faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:46,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:46,344 INFO L130 PetriNetUnfolder]: 105/596 cut-off events. [2023-09-01 00:34:46,345 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 00:34:46,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:46,345 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:46,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:46,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:46,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1786852118, now seen corresponding path program 1 times [2023-09-01 00:34:46,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:46,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580105963] [2023-09-01 00:34:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:46,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:46,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:46,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:46,390 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:46,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:46,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:34:46,391 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:46,391 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:46,392 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:46,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:34:46,440 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:34:46,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 479 transitions, 1102 flow [2023-09-01 00:34:49,233 INFO L130 PetriNetUnfolder]: 2408/12278 cut-off events. [2023-09-01 00:34:49,234 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:34:49,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14655 conditions, 12278 events. 2408/12278 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 124643 event pairs, 1291 based on Foata normal form. 0/9492 useless extension candidates. Maximal degree in co-relation 7380. Up to 2304 conditions per place. [2023-09-01 00:34:49,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 479 transitions, 1102 flow [2023-09-01 00:34:49,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 430 places, 479 transitions, 1102 flow [2023-09-01 00:34:49,557 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:49,557 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 430 places, 479 transitions, 1102 flow [2023-09-01 00:34:49,558 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 430 places, 479 transitions, 1102 flow [2023-09-01 00:34:49,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 479 transitions, 1102 flow [2023-09-01 00:34:52,241 INFO L130 PetriNetUnfolder]: 2408/12278 cut-off events. [2023-09-01 00:34:52,241 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:34:52,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14655 conditions, 12278 events. 2408/12278 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 124643 event pairs, 1291 based on Foata normal form. 0/9492 useless extension candidates. Maximal degree in co-relation 7380. Up to 2304 conditions per place. [2023-09-01 00:34:53,107 INFO L119 LiptonReduction]: Number of co-enabled transitions 169740 [2023-09-01 00:34:58,608 INFO L134 LiptonReduction]: Checked pairs total: 531421 [2023-09-01 00:34:58,608 INFO L136 LiptonReduction]: Total number of compositions: 374 [2023-09-01 00:34:58,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:58,610 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f069faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:58,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:58,686 INFO L130 PetriNetUnfolder]: 150/797 cut-off events. [2023-09-01 00:34:58,686 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 00:34:58,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:58,686 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:58,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:58,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash -611112846, now seen corresponding path program 1 times [2023-09-01 00:34:58,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:58,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282232555] [2023-09-01 00:34:58,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:58,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:58,707 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:58,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:58,726 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:58,726 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:58,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:34:58,727 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:58,727 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:58,727 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:58,727 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:34:58,767 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:34:58,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 468 places, 522 transitions, 1214 flow [2023-09-01 00:35:04,429 INFO L130 PetriNetUnfolder]: 5235/24387 cut-off events. [2023-09-01 00:35:04,429 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:35:05,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29593 conditions, 24387 events. 5235/24387 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 281448 event pairs, 3084 based on Foata normal form. 0/19017 useless extension candidates. Maximal degree in co-relation 14635. Up to 5120 conditions per place. [2023-09-01 00:35:05,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 468 places, 522 transitions, 1214 flow [2023-09-01 00:35:05,316 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 468 places, 522 transitions, 1214 flow [2023-09-01 00:35:05,317 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:35:05,317 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 468 places, 522 transitions, 1214 flow [2023-09-01 00:35:05,317 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 468 places, 522 transitions, 1214 flow [2023-09-01 00:35:05,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 468 places, 522 transitions, 1214 flow [2023-09-01 00:35:11,151 INFO L130 PetriNetUnfolder]: 5235/24387 cut-off events. [2023-09-01 00:35:11,151 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:35:11,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29593 conditions, 24387 events. 5235/24387 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 281448 event pairs, 3084 based on Foata normal form. 0/19017 useless extension candidates. Maximal degree in co-relation 14635. Up to 5120 conditions per place. [2023-09-01 00:35:12,942 INFO L119 LiptonReduction]: Number of co-enabled transitions 206640 [2023-09-01 00:35:18,833 INFO L134 LiptonReduction]: Checked pairs total: 650722 [2023-09-01 00:35:18,834 INFO L136 LiptonReduction]: Total number of compositions: 398 [2023-09-01 00:35:18,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:35:18,836 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f069faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:35:18,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:35:18,965 INFO L130 PetriNetUnfolder]: 224/1101 cut-off events. [2023-09-01 00:35:18,966 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 00:35:18,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:35:18,966 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:35:18,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:35:18,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:35:18,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2095999925, now seen corresponding path program 1 times [2023-09-01 00:35:18,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:35:18,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146006066] [2023-09-01 00:35:18,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:35:18,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:35:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:19,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:35:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:19,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:35:19,034 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:35:19,034 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:35:19,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:35:19,034 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:35:19,035 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:35:19,035 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:35:19,035 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:35:19,087 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:35:19,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 506 places, 565 transitions, 1328 flow [2023-09-01 00:35:32,382 INFO L130 PetriNetUnfolder]: 11390/49040 cut-off events. [2023-09-01 00:35:32,382 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:35:33,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60404 conditions, 49040 events. 11390/49040 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 630989 event pairs, 7181 based on Foata normal form. 0/38526 useless extension candidates. Maximal degree in co-relation 29571. Up to 11264 conditions per place. [2023-09-01 00:35:33,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 506 places, 565 transitions, 1328 flow [2023-09-01 00:35:34,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 506 places, 565 transitions, 1328 flow [2023-09-01 00:35:34,613 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:35:34,613 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 506 places, 565 transitions, 1328 flow [2023-09-01 00:35:34,613 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 506 places, 565 transitions, 1328 flow [2023-09-01 00:35:34,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 506 places, 565 transitions, 1328 flow [2023-09-01 00:35:47,630 INFO L130 PetriNetUnfolder]: 11390/49040 cut-off events. [2023-09-01 00:35:47,630 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:35:49,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60404 conditions, 49040 events. 11390/49040 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 630989 event pairs, 7181 based on Foata normal form. 0/38526 useless extension candidates. Maximal degree in co-relation 29571. Up to 11264 conditions per place. [2023-09-01 00:35:52,231 INFO L119 LiptonReduction]: Number of co-enabled transitions 247148 [2023-09-01 00:35:58,397 INFO L134 LiptonReduction]: Checked pairs total: 789787 [2023-09-01 00:35:58,398 INFO L136 LiptonReduction]: Total number of compositions: 429 [2023-09-01 00:35:58,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:35:58,399 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f069faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:35:58,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:35:58,567 INFO L130 PetriNetUnfolder]: 349/1562 cut-off events. [2023-09-01 00:35:58,567 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 00:35:58,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:35:58,567 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:35:58,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:35:58,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:35:58,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2000805361, now seen corresponding path program 1 times [2023-09-01 00:35:58,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:35:58,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261752997] [2023-09-01 00:35:58,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:35:58,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:35:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:58,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:35:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:58,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:35:58,623 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:35:58,623 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:35:58,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:35:58,623 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:35:58,624 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:35:58,624 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:35:58,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:35:58,678 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:35:58,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 544 places, 608 transitions, 1444 flow [2023-09-01 00:36:30,479 INFO L130 PetriNetUnfolder]: 24713/99293 cut-off events. [2023-09-01 00:36:30,479 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:36:36,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123984 conditions, 99293 events. 24713/99293 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2218. Compared 1391335 event pairs, 16398 based on Foata normal form. 0/78515 useless extension candidates. Maximal degree in co-relation 60380. Up to 24576 conditions per place. [2023-09-01 00:36:36,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 544 places, 608 transitions, 1444 flow [2023-09-01 00:36:38,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 544 places, 608 transitions, 1444 flow [2023-09-01 00:36:38,020 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:36:38,020 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 544 places, 608 transitions, 1444 flow [2023-09-01 00:36:38,020 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 544 places, 608 transitions, 1444 flow [2023-09-01 00:36:38,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 544 places, 608 transitions, 1444 flow [2023-09-01 00:37:06,372 INFO L130 PetriNetUnfolder]: 24713/99293 cut-off events. [2023-09-01 00:37:06,372 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:37:11,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123984 conditions, 99293 events. 24713/99293 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2218. Compared 1391335 event pairs, 16398 based on Foata normal form. 0/78515 useless extension candidates. Maximal degree in co-relation 60380. Up to 24576 conditions per place. [2023-09-01 00:37:20,382 INFO L119 LiptonReduction]: Number of co-enabled transitions 291264 [2023-09-01 00:37:27,001 INFO L134 LiptonReduction]: Checked pairs total: 928362 [2023-09-01 00:37:27,001 INFO L136 LiptonReduction]: Total number of compositions: 455 [2023-09-01 00:37:27,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:37:27,003 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f069faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:37:27,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:37:27,317 INFO L130 PetriNetUnfolder]: 560/2274 cut-off events. [2023-09-01 00:37:27,317 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 00:37:27,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:37:27,317 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:37:27,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:37:27,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:37:27,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1182516844, now seen corresponding path program 1 times [2023-09-01 00:37:27,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:37:27,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939903015] [2023-09-01 00:37:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:37:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:37:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:27,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:37:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:27,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:37:27,365 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:37:27,366 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:37:27,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:37:27,366 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:37:27,367 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:37:27,367 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:37:27,367 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:37:27,418 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:37:27,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 582 places, 651 transitions, 1562 flow [2023-09-01 00:38:33,218 INFO L130 PetriNetUnfolder]: 53396/201770 cut-off events. [2023-09-01 00:38:33,218 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:38:48,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255149 conditions, 201770 events. 53396/201770 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4235. Compared 3077006 event pairs, 36879 based on Foata normal form. 0/160488 useless extension candidates. Maximal degree in co-relation 123958. Up to 53248 conditions per place. [2023-09-01 00:38:48,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 582 places, 651 transitions, 1562 flow [2023-09-01 00:38:55,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 582 places, 651 transitions, 1562 flow [2023-09-01 00:38:55,822 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:55,822 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 582 places, 651 transitions, 1562 flow [2023-09-01 00:38:55,822 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 582 places, 651 transitions, 1562 flow [2023-09-01 00:38:55,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 582 places, 651 transitions, 1562 flow