./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 20:54:15,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:54:15,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:54:15,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:54:15,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:54:15,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:54:15,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:54:15,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:54:15,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:54:15,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:54:15,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:54:15,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:54:15,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:54:15,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:54:15,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:54:15,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:54:15,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:54:15,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:54:15,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:54:15,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:54:15,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:54:15,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:54:15,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:54:15,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:54:15,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:54:15,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:54:15,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:54:15,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:54:15,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:54:15,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:54:15,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:54:15,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:54:15,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:54:15,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:54:15,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:54:15,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:54:15,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:54:15,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:54:15,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:54:15,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:54:15,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:54:15,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:54:15,203 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:54:15,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:54:15,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:54:15,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:54:15,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:54:15,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:54:15,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:54:15,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:54:15,206 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:54:15,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:54:15,206 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:54:15,207 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:54:15,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:54:15,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:54:15,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:54:15,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:54:15,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:54:15,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:54:15,208 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:54:15,208 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:54:15,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:54:15,208 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:54:15,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:54:15,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:54:15,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:54:15,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:54:15,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:54:15,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:54:15,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:54:15,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:54:15,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:54:15,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:54:15,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:54:15,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:54:15,210 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:54:15,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:54:15,210 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:54:15,211 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:54:15,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:54:15,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:54:15,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:54:15,468 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:54:15,468 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:54:15,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-31 20:54:16,384 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:54:16,590 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:54:16,590 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-31 20:54:16,601 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5f6ad48/4e909762796144e483ee2b0592969b01/FLAGed7f4b654 [2023-08-31 20:54:16,620 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5f6ad48/4e909762796144e483ee2b0592969b01 [2023-08-31 20:54:16,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:54:16,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:54:16,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:54:16,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:54:16,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:54:16,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:54:16" (1/1) ... [2023-08-31 20:54:16,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:16, skipping insertion in model container [2023-08-31 20:54:16,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:54:16" (1/1) ... [2023-08-31 20:54:16,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:54:16,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:54:16,907 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_37-indirect_racing.i[30176,30189] [2023-08-31 20:54:16,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:54:16,938 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:54:16,966 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2023-08-31 20:54:16,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:54:17,006 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:54:17,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17 WrapperNode [2023-08-31 20:54:17,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:54:17,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:54:17,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:54:17,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:54:17,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17" (1/1) ... [2023-08-31 20:54:17,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17" (1/1) ... [2023-08-31 20:54:17,044 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2023-08-31 20:54:17,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:54:17,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:54:17,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:54:17,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:54:17,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17" (1/1) ... [2023-08-31 20:54:17,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17" (1/1) ... [2023-08-31 20:54:17,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17" (1/1) ... [2023-08-31 20:54:17,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17" (1/1) ... [2023-08-31 20:54:17,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17" (1/1) ... [2023-08-31 20:54:17,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17" (1/1) ... [2023-08-31 20:54:17,114 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17" (1/1) ... [2023-08-31 20:54:17,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17" (1/1) ... [2023-08-31 20:54:17,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:54:17,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:54:17,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:54:17,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:54:17,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17" (1/1) ... [2023-08-31 20:54:17,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:54:17,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:54:17,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 20:54:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:54:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:54:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:54:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:54:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:54:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:54:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:54:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:54:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:54:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:54:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:54:17,175 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 20:54:17,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 20:54:17,284 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:54:17,286 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:54:17,479 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:54:17,484 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:54:17,484 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-31 20:54:17,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:54:17 BoogieIcfgContainer [2023-08-31 20:54:17,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:54:17,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:54:17,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:54:17,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:54:17,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:54:16" (1/3) ... [2023-08-31 20:54:17,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b963f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:54:17, skipping insertion in model container [2023-08-31 20:54:17,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:54:17" (2/3) ... [2023-08-31 20:54:17,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b963f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:54:17, skipping insertion in model container [2023-08-31 20:54:17,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:54:17" (3/3) ... [2023-08-31 20:54:17,495 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-08-31 20:54:17,500 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:54:17,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:54:17,507 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-31 20:54:17,508 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:54:17,597 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:54:17,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 169 transitions, 346 flow [2023-08-31 20:54:17,713 INFO L130 PetriNetUnfolder]: 17/215 cut-off events. [2023-08-31 20:54:17,713 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:54:17,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 215 events. 17/215 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 612 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-08-31 20:54:17,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 169 transitions, 346 flow [2023-08-31 20:54:17,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 161 transitions, 327 flow [2023-08-31 20:54:17,727 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:54:17,736 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 161 transitions, 327 flow [2023-08-31 20:54:17,739 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 161 transitions, 327 flow [2023-08-31 20:54:17,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 161 transitions, 327 flow [2023-08-31 20:54:17,778 INFO L130 PetriNetUnfolder]: 16/207 cut-off events. [2023-08-31 20:54:17,779 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:54:17,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 207 events. 16/207 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 563 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-08-31 20:54:17,784 INFO L119 LiptonReduction]: Number of co-enabled transitions 6864 [2023-08-31 20:54:20,399 INFO L134 LiptonReduction]: Checked pairs total: 29520 [2023-08-31 20:54:20,399 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-31 20:54:20,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:54:20,418 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62afc61f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:54:20,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:54:20,421 INFO L130 PetriNetUnfolder]: 0/26 cut-off events. [2023-08-31 20:54:20,421 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:54:20,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:54:20,422 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:54:20,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:54:20,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:54:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash 419029237, now seen corresponding path program 1 times [2023-08-31 20:54:20,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:54:20,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101079064] [2023-08-31 20:54:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:54:20,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:54:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:20,531 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:54:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:20,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:54:20,573 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:54:20,574 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:54:20,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:54:20,576 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:54:20,579 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:54:20,579 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:54:20,579 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:54:20,613 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:54:20,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 237 transitions, 492 flow [2023-08-31 20:54:20,667 INFO L130 PetriNetUnfolder]: 31/359 cut-off events. [2023-08-31 20:54:20,667 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:54:20,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 359 events. 31/359 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1331 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 217. Up to 9 conditions per place. [2023-08-31 20:54:20,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 237 transitions, 492 flow [2023-08-31 20:54:20,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 234 transitions, 486 flow [2023-08-31 20:54:20,674 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:54:20,674 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 234 transitions, 486 flow [2023-08-31 20:54:20,675 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 234 transitions, 486 flow [2023-08-31 20:54:20,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 234 transitions, 486 flow [2023-08-31 20:54:20,713 INFO L130 PetriNetUnfolder]: 31/356 cut-off events. [2023-08-31 20:54:20,713 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:54:20,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 356 events. 31/356 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1329 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 214. Up to 9 conditions per place. [2023-08-31 20:54:20,725 INFO L119 LiptonReduction]: Number of co-enabled transitions 23892 [2023-08-31 20:54:23,057 INFO L134 LiptonReduction]: Checked pairs total: 137579 [2023-08-31 20:54:23,057 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-31 20:54:23,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:54:23,059 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62afc61f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:54:23,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:54:23,063 INFO L130 PetriNetUnfolder]: 4/71 cut-off events. [2023-08-31 20:54:23,063 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 20:54:23,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:54:23,064 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:54:23,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:54:23,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:54:23,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1259739801, now seen corresponding path program 1 times [2023-08-31 20:54:23,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:54:23,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818340331] [2023-08-31 20:54:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:54:23,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:54:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:23,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:54:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:23,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:54:23,109 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:54:23,109 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:54:23,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:54:23,110 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:54:23,111 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:54:23,111 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:54:23,111 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:54:23,131 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:54:23,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 305 transitions, 640 flow [2023-08-31 20:54:23,181 INFO L130 PetriNetUnfolder]: 50/546 cut-off events. [2023-08-31 20:54:23,182 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:54:23,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 546 events. 50/546 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2334 event pairs, 1 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 367. Up to 16 conditions per place. [2023-08-31 20:54:23,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 305 transitions, 640 flow [2023-08-31 20:54:23,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 302 transitions, 634 flow [2023-08-31 20:54:23,190 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:54:23,190 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 302 transitions, 634 flow [2023-08-31 20:54:23,190 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 302 transitions, 634 flow [2023-08-31 20:54:23,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 302 transitions, 634 flow [2023-08-31 20:54:23,256 INFO L130 PetriNetUnfolder]: 50/543 cut-off events. [2023-08-31 20:54:23,256 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:54:23,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 543 events. 50/543 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2320 event pairs, 1 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 364. Up to 16 conditions per place. [2023-08-31 20:54:23,273 INFO L119 LiptonReduction]: Number of co-enabled transitions 49500 [2023-08-31 20:54:25,855 INFO L134 LiptonReduction]: Checked pairs total: 306155 [2023-08-31 20:54:25,855 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-08-31 20:54:25,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:54:25,857 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62afc61f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:54:25,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:54:25,864 INFO L130 PetriNetUnfolder]: 8/123 cut-off events. [2023-08-31 20:54:25,864 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:54:25,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:54:25,864 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:54:25,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:54:25,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:54:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash 379376329, now seen corresponding path program 1 times [2023-08-31 20:54:25,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:54:25,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755569734] [2023-08-31 20:54:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:54:25,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:54:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:25,903 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:54:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:25,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:54:25,924 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:54:25,924 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:54:25,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:54:25,925 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:54:25,925 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:54:25,925 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:54:25,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:54:25,945 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:54:25,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 373 transitions, 790 flow [2023-08-31 20:54:26,055 INFO L130 PetriNetUnfolder]: 81/821 cut-off events. [2023-08-31 20:54:26,056 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:54:26,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 821 events. 81/821 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3875 event pairs, 6 based on Foata normal form. 0/687 useless extension candidates. Maximal degree in co-relation 566. Up to 32 conditions per place. [2023-08-31 20:54:26,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 373 transitions, 790 flow [2023-08-31 20:54:26,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 346 places, 370 transitions, 784 flow [2023-08-31 20:54:26,072 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:54:26,073 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 346 places, 370 transitions, 784 flow [2023-08-31 20:54:26,073 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 346 places, 370 transitions, 784 flow [2023-08-31 20:54:26,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 370 transitions, 784 flow [2023-08-31 20:54:26,181 INFO L130 PetriNetUnfolder]: 81/818 cut-off events. [2023-08-31 20:54:26,181 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:54:26,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 818 events. 81/818 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3837 event pairs, 6 based on Foata normal form. 0/687 useless extension candidates. Maximal degree in co-relation 563. Up to 32 conditions per place. [2023-08-31 20:54:26,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 84216 [2023-08-31 20:54:29,123 INFO L134 LiptonReduction]: Checked pairs total: 546072 [2023-08-31 20:54:29,123 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-31 20:54:29,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:54:29,125 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62afc61f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:54:29,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:54:29,142 INFO L130 PetriNetUnfolder]: 13/187 cut-off events. [2023-08-31 20:54:29,142 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:54:29,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:54:29,143 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:54:29,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:54:29,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:54:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash -566980638, now seen corresponding path program 1 times [2023-08-31 20:54:29,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:54:29,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464407629] [2023-08-31 20:54:29,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:54:29,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:54:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:29,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:54:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:29,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:54:29,214 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:54:29,214 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:54:29,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:54:29,214 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:54:29,215 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:54:29,215 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:54:29,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:54:29,239 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:54:29,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 441 transitions, 942 flow [2023-08-31 20:54:29,425 INFO L130 PetriNetUnfolder]: 140/1276 cut-off events. [2023-08-31 20:54:29,425 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:54:29,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 1276 events. 140/1276 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 6781 event pairs, 23 based on Foata normal form. 0/1075 useless extension candidates. Maximal degree in co-relation 866. Up to 80 conditions per place. [2023-08-31 20:54:29,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 412 places, 441 transitions, 942 flow [2023-08-31 20:54:29,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 438 transitions, 936 flow [2023-08-31 20:54:29,457 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:54:29,457 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 438 transitions, 936 flow [2023-08-31 20:54:29,457 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 438 transitions, 936 flow [2023-08-31 20:54:29,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 438 transitions, 936 flow [2023-08-31 20:54:29,640 INFO L130 PetriNetUnfolder]: 140/1273 cut-off events. [2023-08-31 20:54:29,640 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:54:29,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1384 conditions, 1273 events. 140/1273 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 6792 event pairs, 23 based on Foata normal form. 0/1075 useless extension candidates. Maximal degree in co-relation 863. Up to 80 conditions per place. [2023-08-31 20:54:29,701 INFO L119 LiptonReduction]: Number of co-enabled transitions 128040 [2023-08-31 20:54:32,465 INFO L134 LiptonReduction]: Checked pairs total: 840496 [2023-08-31 20:54:32,466 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-08-31 20:54:32,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:54:32,469 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62afc61f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:54:32,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:54:32,498 INFO L130 PetriNetUnfolder]: 26/271 cut-off events. [2023-08-31 20:54:32,499 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 20:54:32,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:54:32,499 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:54:32,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:54:32,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:54:32,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1231786437, now seen corresponding path program 1 times [2023-08-31 20:54:32,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:54:32,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307282468] [2023-08-31 20:54:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:54:32,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:54:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:32,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:54:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:32,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:54:32,576 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:54:32,576 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:54:32,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:54:32,576 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:54:32,576 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:54:32,576 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:54:32,576 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:54:32,610 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:54:32,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 475 places, 509 transitions, 1096 flow [2023-08-31 20:54:33,011 INFO L130 PetriNetUnfolder]: 263/2099 cut-off events. [2023-08-31 20:54:33,011 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:54:33,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 2099 events. 263/2099 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 13096 event pairs, 72 based on Foata normal form. 0/1783 useless extension candidates. Maximal degree in co-relation 1375. Up to 192 conditions per place. [2023-08-31 20:54:33,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 475 places, 509 transitions, 1096 flow [2023-08-31 20:54:33,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 472 places, 506 transitions, 1090 flow [2023-08-31 20:54:33,055 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:54:33,056 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 472 places, 506 transitions, 1090 flow [2023-08-31 20:54:33,056 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 472 places, 506 transitions, 1090 flow [2023-08-31 20:54:33,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 472 places, 506 transitions, 1090 flow [2023-08-31 20:54:33,442 INFO L130 PetriNetUnfolder]: 263/2096 cut-off events. [2023-08-31 20:54:33,442 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:54:33,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 2096 events. 263/2096 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 13120 event pairs, 72 based on Foata normal form. 0/1783 useless extension candidates. Maximal degree in co-relation 1372. Up to 192 conditions per place. [2023-08-31 20:54:33,561 INFO L119 LiptonReduction]: Number of co-enabled transitions 180972 [2023-08-31 20:54:36,758 INFO L134 LiptonReduction]: Checked pairs total: 1068308 [2023-08-31 20:54:36,758 INFO L136 LiptonReduction]: Total number of compositions: 217 [2023-08-31 20:54:36,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:54:36,759 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62afc61f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:54:36,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:54:36,786 INFO L130 PetriNetUnfolder]: 36/361 cut-off events. [2023-08-31 20:54:36,786 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-31 20:54:36,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:54:36,787 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:54:36,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:54:36,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:54:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1948177740, now seen corresponding path program 1 times [2023-08-31 20:54:36,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:54:36,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894291515] [2023-08-31 20:54:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:54:36,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:54:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:36,816 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:54:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:36,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:54:36,830 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:54:36,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:54:36,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:54:36,831 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:54:36,831 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:54:36,831 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:54:36,831 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:54:36,860 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:54:36,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 538 places, 577 transitions, 1252 flow [2023-08-31 20:54:37,707 INFO L130 PetriNetUnfolder]: 530/3674 cut-off events. [2023-08-31 20:54:37,707 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:54:37,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4172 conditions, 3674 events. 530/3674 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 26928 event pairs, 201 based on Foata normal form. 0/3147 useless extension candidates. Maximal degree in co-relation 2317. Up to 448 conditions per place. [2023-08-31 20:54:37,776 INFO L82 GeneralOperation]: Start removeDead. Operand has 538 places, 577 transitions, 1252 flow [2023-08-31 20:54:37,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 535 places, 574 transitions, 1246 flow [2023-08-31 20:54:37,802 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:54:37,802 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 535 places, 574 transitions, 1246 flow [2023-08-31 20:54:37,802 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 535 places, 574 transitions, 1246 flow [2023-08-31 20:54:37,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 574 transitions, 1246 flow [2023-08-31 20:54:38,622 INFO L130 PetriNetUnfolder]: 530/3671 cut-off events. [2023-08-31 20:54:38,622 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:54:38,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 3671 events. 530/3671 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 26938 event pairs, 201 based on Foata normal form. 0/3147 useless extension candidates. Maximal degree in co-relation 2314. Up to 448 conditions per place. [2023-08-31 20:54:38,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 243012 [2023-08-31 20:54:42,261 INFO L134 LiptonReduction]: Checked pairs total: 1452645 [2023-08-31 20:54:42,261 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-08-31 20:54:42,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:54:42,263 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62afc61f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:54:42,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:54:42,309 INFO L130 PetriNetUnfolder]: 47/463 cut-off events. [2023-08-31 20:54:42,309 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2023-08-31 20:54:42,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:54:42,309 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:54:42,310 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:54:42,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:54:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1253616085, now seen corresponding path program 1 times [2023-08-31 20:54:42,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:54:42,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023847426] [2023-08-31 20:54:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:54:42,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:54:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:42,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:54:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:42,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:54:42,354 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:54:42,355 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:54:42,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:54:42,355 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:54:42,356 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:54:42,356 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:54:42,356 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:54:42,398 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:54:42,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 601 places, 645 transitions, 1410 flow [2023-08-31 20:54:44,044 INFO L130 PetriNetUnfolder]: 1117/6785 cut-off events. [2023-08-31 20:54:44,044 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:54:44,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7870 conditions, 6785 events. 1117/6785 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 58773 event pairs, 522 based on Foata normal form. 0/5855 useless extension candidates. Maximal degree in co-relation 4156. Up to 1024 conditions per place. [2023-08-31 20:54:44,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 601 places, 645 transitions, 1410 flow [2023-08-31 20:54:44,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 598 places, 642 transitions, 1404 flow [2023-08-31 20:54:44,378 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:54:44,378 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 598 places, 642 transitions, 1404 flow [2023-08-31 20:54:44,378 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 598 places, 642 transitions, 1404 flow [2023-08-31 20:54:44,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 598 places, 642 transitions, 1404 flow [2023-08-31 20:54:46,000 INFO L130 PetriNetUnfolder]: 1117/6782 cut-off events. [2023-08-31 20:54:46,000 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:54:46,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7867 conditions, 6782 events. 1117/6782 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 58333 event pairs, 522 based on Foata normal form. 0/5855 useless extension candidates. Maximal degree in co-relation 4153. Up to 1024 conditions per place. [2023-08-31 20:54:46,716 INFO L119 LiptonReduction]: Number of co-enabled transitions 314160 [2023-08-31 20:54:50,413 INFO L134 LiptonReduction]: Checked pairs total: 1901346 [2023-08-31 20:54:50,413 INFO L136 LiptonReduction]: Total number of compositions: 269 [2023-08-31 20:54:50,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:54:50,415 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62afc61f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:54:50,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:54:50,470 INFO L130 PetriNetUnfolder]: 60/579 cut-off events. [2023-08-31 20:54:50,471 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2023-08-31 20:54:50,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:54:50,471 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:54:50,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:54:50,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:54:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash -531035909, now seen corresponding path program 1 times [2023-08-31 20:54:50,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:54:50,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489214089] [2023-08-31 20:54:50,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:54:50,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:54:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:50,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:54:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:50,498 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:54:50,498 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:54:50,499 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:54:50,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:54:50,499 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:54:50,499 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:54:50,499 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:54:50,499 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:54:50,528 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:54:50,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 664 places, 713 transitions, 1570 flow [2023-08-31 20:54:54,123 INFO L130 PetriNetUnfolder]: 2408/13032 cut-off events. [2023-08-31 20:54:54,123 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:54:54,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15409 conditions, 13032 events. 2408/13032 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 129998 event pairs, 1291 based on Foata normal form. 0/11315 useless extension candidates. Maximal degree in co-relation 7852. Up to 2304 conditions per place. [2023-08-31 20:54:54,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 664 places, 713 transitions, 1570 flow [2023-08-31 20:54:54,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 661 places, 710 transitions, 1564 flow [2023-08-31 20:54:54,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:54:54,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 661 places, 710 transitions, 1564 flow [2023-08-31 20:54:54,591 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 661 places, 710 transitions, 1564 flow [2023-08-31 20:54:54,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 661 places, 710 transitions, 1564 flow [2023-08-31 20:54:58,318 INFO L130 PetriNetUnfolder]: 2408/13029 cut-off events. [2023-08-31 20:54:58,318 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:54:58,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15406 conditions, 13029 events. 2408/13029 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 130066 event pairs, 1291 based on Foata normal form. 0/11315 useless extension candidates. Maximal degree in co-relation 7849. Up to 2304 conditions per place. [2023-08-31 20:54:59,670 INFO L119 LiptonReduction]: Number of co-enabled transitions 394416 [2023-08-31 20:55:03,334 INFO L134 LiptonReduction]: Checked pairs total: 2735688 [2023-08-31 20:55:03,335 INFO L136 LiptonReduction]: Total number of compositions: 292 [2023-08-31 20:55:03,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:03,339 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62afc61f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:03,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:03,452 INFO L130 PetriNetUnfolder]: 76/716 cut-off events. [2023-08-31 20:55:03,453 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2023-08-31 20:55:03,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:03,453 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:55:03,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:03,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash 332539774, now seen corresponding path program 1 times [2023-08-31 20:55:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:03,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844861089] [2023-08-31 20:55:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:03,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:03,481 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:03,503 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:03,503 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:03,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:03,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:55:03,504 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:03,506 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:03,506 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:03,506 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:55:03,541 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:55:03,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 727 places, 781 transitions, 1732 flow [2023-08-31 20:55:11,578 INFO L130 PetriNetUnfolder]: 5235/25679 cut-off events. [2023-08-31 20:55:11,578 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:55:12,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30885 conditions, 25679 events. 5235/25679 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 289927 event pairs, 3084 based on Foata normal form. 0/22407 useless extension candidates. Maximal degree in co-relation 15389. Up to 5120 conditions per place. [2023-08-31 20:55:12,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 727 places, 781 transitions, 1732 flow [2023-08-31 20:55:12,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 724 places, 778 transitions, 1726 flow [2023-08-31 20:55:12,824 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:12,825 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 724 places, 778 transitions, 1726 flow [2023-08-31 20:55:12,825 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 724 places, 778 transitions, 1726 flow [2023-08-31 20:55:12,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 724 places, 778 transitions, 1726 flow [2023-08-31 20:55:20,876 INFO L130 PetriNetUnfolder]: 5235/25676 cut-off events. [2023-08-31 20:55:20,877 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:55:21,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30882 conditions, 25676 events. 5235/25676 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 289725 event pairs, 3084 based on Foata normal form. 0/22407 useless extension candidates. Maximal degree in co-relation 15386. Up to 5120 conditions per place. [2023-08-31 20:55:23,940 INFO L119 LiptonReduction]: Number of co-enabled transitions 483780 [2023-08-31 20:55:28,032 INFO L134 LiptonReduction]: Checked pairs total: 3346604 [2023-08-31 20:55:28,032 INFO L136 LiptonReduction]: Total number of compositions: 313 [2023-08-31 20:55:28,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:28,033 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62afc61f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:28,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:28,176 INFO L130 PetriNetUnfolder]: 97/887 cut-off events. [2023-08-31 20:55:28,176 INFO L131 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2023-08-31 20:55:28,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:28,176 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:55:28,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:28,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:28,177 INFO L85 PathProgramCache]: Analyzing trace with hash -197964267, now seen corresponding path program 1 times [2023-08-31 20:55:28,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:28,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350720208] [2023-08-31 20:55:28,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:28,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:28,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:28,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:28,211 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:28,211 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:28,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:55:28,211 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:28,212 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:28,212 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:28,212 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:55:28,256 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:55:28,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 790 places, 849 transitions, 1896 flow [2023-08-31 20:55:46,141 INFO L130 PetriNetUnfolder]: 11390/51382 cut-off events. [2023-08-31 20:55:46,141 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:55:48,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62746 conditions, 51382 events. 11390/51382 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 648982 event pairs, 7181 based on Foata normal form. 0/45019 useless extension candidates. Maximal degree in co-relation 30863. Up to 11264 conditions per place. [2023-08-31 20:55:48,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 790 places, 849 transitions, 1896 flow [2023-08-31 20:55:49,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 787 places, 846 transitions, 1890 flow [2023-08-31 20:55:49,182 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:49,182 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 787 places, 846 transitions, 1890 flow [2023-08-31 20:55:49,182 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 787 places, 846 transitions, 1890 flow [2023-08-31 20:55:49,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 787 places, 846 transitions, 1890 flow [2023-08-31 20:56:07,860 INFO L130 PetriNetUnfolder]: 11390/51379 cut-off events. [2023-08-31 20:56:07,860 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:56:10,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62743 conditions, 51379 events. 11390/51379 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 648959 event pairs, 7181 based on Foata normal form. 0/45019 useless extension candidates. Maximal degree in co-relation 30860. Up to 11264 conditions per place. [2023-08-31 20:56:15,058 INFO L119 LiptonReduction]: Number of co-enabled transitions 582252 [2023-08-31 20:56:19,041 INFO L134 LiptonReduction]: Checked pairs total: 3575085 [2023-08-31 20:56:19,042 INFO L136 LiptonReduction]: Total number of compositions: 338 [2023-08-31 20:56:19,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:19,043 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62afc61f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:19,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:19,190 INFO L130 PetriNetUnfolder]: 127/1107 cut-off events. [2023-08-31 20:56:19,190 INFO L131 PetriNetUnfolder]: For 382/382 co-relation queries the response was YES. [2023-08-31 20:56:19,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:19,190 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:19,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:19,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:19,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2101815381, now seen corresponding path program 1 times [2023-08-31 20:56:19,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:19,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169163590] [2023-08-31 20:56:19,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:19,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:19,209 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:19,223 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:19,223 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:19,223 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:19,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:56:19,223 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:19,224 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:19,224 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:19,224 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:56:19,261 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:56:19,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 853 places, 917 transitions, 2062 flow [2023-08-31 20:56:57,897 INFO L130 PetriNetUnfolder]: 24713/103709 cut-off events. [2023-08-31 20:56:57,897 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:57:06,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128400 conditions, 103709 events. 24713/103709 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 1435686 event pairs, 16398 based on Foata normal form. 0/91183 useless extension candidates. Maximal degree in co-relation 62722. Up to 24576 conditions per place. [2023-08-31 20:57:06,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 853 places, 917 transitions, 2062 flow [2023-08-31 20:57:08,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 850 places, 914 transitions, 2056 flow [2023-08-31 20:57:08,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:57:08,871 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 850 places, 914 transitions, 2056 flow [2023-08-31 20:57:08,871 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 850 places, 914 transitions, 2056 flow [2023-08-31 20:57:08,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 850 places, 914 transitions, 2056 flow [2023-08-31 20:57:47,861 INFO L130 PetriNetUnfolder]: 24713/103706 cut-off events. [2023-08-31 20:57:47,862 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:57:56,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128397 conditions, 103706 events. 24713/103706 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 1435573 event pairs, 16398 based on Foata normal form. 0/91183 useless extension candidates. Maximal degree in co-relation 62719. Up to 24576 conditions per place. [2023-08-31 20:58:10,420 INFO L119 LiptonReduction]: Number of co-enabled transitions 689832 [2023-08-31 20:58:14,815 INFO L134 LiptonReduction]: Checked pairs total: 4258010 [2023-08-31 20:58:14,815 INFO L136 LiptonReduction]: Total number of compositions: 358 [2023-08-31 20:58:14,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:14,816 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62afc61f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:14,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:15,032 INFO L130 PetriNetUnfolder]: 161/1384 cut-off events. [2023-08-31 20:58:15,032 INFO L131 PetriNetUnfolder]: For 523/523 co-relation queries the response was YES. [2023-08-31 20:58:15,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:15,033 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:15,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:15,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:15,033 INFO L85 PathProgramCache]: Analyzing trace with hash 645968930, now seen corresponding path program 1 times [2023-08-31 20:58:15,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:15,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776122484] [2023-08-31 20:58:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:15,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:15,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:15,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:15,069 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:15,069 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:15,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:58:15,069 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:15,070 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:15,070 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:15,070 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:58:15,104 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:58:15,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 916 places, 985 transitions, 2230 flow