./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 --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 20:40:52,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:40:52,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:40:52,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:40:52,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:40:52,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:40:52,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:40:52,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:40:52,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:40:52,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:40:52,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:40:52,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:40:52,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:40:52,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:40:52,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:40:52,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:40:52,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:40:52,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:40:52,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:40:52,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:40:52,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:40:52,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:40:52,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:40:52,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:40:52,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:40:52,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:40:52,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:40:52,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:40:52,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:40:52,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:40:52,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:40:52,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:40:52,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:40:52,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:40:52,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:40:52,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:40:52,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:40:52,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:40:52,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:40:52,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:40:52,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:40:52,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:40:52,266 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:40:52,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:40:52,267 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:40:52,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:40:52,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:40:52,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:40:52,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:40:52,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:40:52,270 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:40:52,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:40:52,271 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:40:52,271 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:40:52,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:40:52,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:40:52,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:40:52,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:40:52,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:40:52,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:40:52,272 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:40:52,273 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:40:52,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:40:52,273 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:40:52,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:40:52,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:40:52,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:40:52,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:40:52,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:40:52,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:40:52,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:40:52,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:40:52,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:40:52,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:40:52,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:40:52,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:40:52,276 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:40:52,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:40:52,276 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:40:52,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:40:52,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:40:52,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:40:52,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:40:52,640 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:40:52,640 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:40:52,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-08-31 20:40:53,793 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:40:54,062 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:40:54,062 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-08-31 20:40:54,078 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181086436/162612f267dd491b94aa07d0a6a0c008/FLAG02851da6a [2023-08-31 20:40:54,091 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181086436/162612f267dd491b94aa07d0a6a0c008 [2023-08-31 20:40:54,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:40:54,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:40:54,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:40:54,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:40:54,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:40:54,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76496401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54, skipping insertion in model container [2023-08-31 20:40:54,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:40:54,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:40:54,441 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_02-simple_racefree.i[30176,30189] [2023-08-31 20:40:54,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:40:54,514 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:40:54,551 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_02-simple_racefree.i[30176,30189] [2023-08-31 20:40:54,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:40:54,618 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:40:54,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54 WrapperNode [2023-08-31 20:40:54,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:40:54,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:40:54,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:40:54,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:40:54,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,685 INFO L138 Inliner]: procedures = 170, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2023-08-31 20:40:54,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:40:54,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:40:54,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:40:54,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:40:54,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,732 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:40:54,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:40:54,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:40:54,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:40:54,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54" (1/1) ... [2023-08-31 20:40:54,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:40:54,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:40:54,779 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 20:40:54,797 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 20:40:54,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:40:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:40:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:40:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:40:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:40:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:40:54,821 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:40:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:40:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:40:54,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:40:54,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:40:54,823 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 20:40:54,991 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:40:54,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:40:55,286 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:40:55,299 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:40:55,299 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-31 20:40:55,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:40:55 BoogieIcfgContainer [2023-08-31 20:40:55,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:40:55,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:40:55,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:40:55,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:40:55,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:40:54" (1/3) ... [2023-08-31 20:40:55,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1134deea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:40:55, skipping insertion in model container [2023-08-31 20:40:55,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:54" (2/3) ... [2023-08-31 20:40:55,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1134deea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:40:55, skipping insertion in model container [2023-08-31 20:40:55,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:40:55" (3/3) ... [2023-08-31 20:40:55,310 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2023-08-31 20:40:55,318 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:40:55,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:40:55,327 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-31 20:40:55,327 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:40:55,399 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:40:55,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 132 transitions, 272 flow [2023-08-31 20:40:55,514 INFO L130 PetriNetUnfolder]: 17/173 cut-off events. [2023-08-31 20:40:55,514 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:40:55,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 173 events. 17/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 476 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-31 20:40:55,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 132 transitions, 272 flow [2023-08-31 20:40:55,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 127 transitions, 259 flow [2023-08-31 20:40:55,530 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:40:55,545 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 127 transitions, 259 flow [2023-08-31 20:40:55,552 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 127 transitions, 259 flow [2023-08-31 20:40:55,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 127 transitions, 259 flow [2023-08-31 20:40:55,585 INFO L130 PetriNetUnfolder]: 16/168 cut-off events. [2023-08-31 20:40:55,585 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:40:55,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 168 events. 16/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 476 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-31 20:40:55,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 4136 [2023-08-31 20:40:58,623 INFO L134 LiptonReduction]: Checked pairs total: 11489 [2023-08-31 20:40:58,623 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-31 20:40:58,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:40:58,641 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;@1d0c63b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:40:58,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:40:58,646 INFO L130 PetriNetUnfolder]: 0/20 cut-off events. [2023-08-31 20:40:58,646 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:40:58,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:40:58,647 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:40:58,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:40:58,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:40:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1465802643, now seen corresponding path program 1 times [2023-08-31 20:40:58,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:40:58,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044956589] [2023-08-31 20:40:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:40:58,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:40:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:40:58,760 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:40:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:40:58,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:40:58,801 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:40:58,802 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:40:58,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:40:58,804 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:40:58,806 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:40:58,807 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:40:58,807 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:40:58,841 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:40:58,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 178 transitions, 374 flow [2023-08-31 20:40:58,901 INFO L130 PetriNetUnfolder]: 31/290 cut-off events. [2023-08-31 20:40:58,902 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:40:58,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 31/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 949 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-08-31 20:40:58,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 178 transitions, 374 flow [2023-08-31 20:40:58,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 178 transitions, 374 flow [2023-08-31 20:40:58,907 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:40:58,907 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 178 transitions, 374 flow [2023-08-31 20:40:58,907 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 178 transitions, 374 flow [2023-08-31 20:40:58,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 178 transitions, 374 flow [2023-08-31 20:40:58,946 INFO L130 PetriNetUnfolder]: 31/290 cut-off events. [2023-08-31 20:40:58,946 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:40:58,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 31/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 949 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-08-31 20:40:58,957 INFO L119 LiptonReduction]: Number of co-enabled transitions 13112 [2023-08-31 20:41:01,670 INFO L134 LiptonReduction]: Checked pairs total: 44567 [2023-08-31 20:41:01,670 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-31 20:41:01,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:01,673 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;@1d0c63b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:01,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:01,679 INFO L130 PetriNetUnfolder]: 6/62 cut-off events. [2023-08-31 20:41:01,679 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 20:41:01,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:01,680 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:41:01,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:01,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:01,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1676548700, now seen corresponding path program 1 times [2023-08-31 20:41:01,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:01,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289151087] [2023-08-31 20:41:01,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:01,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:01,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:01,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:01,752 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:01,752 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:01,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:41:01,753 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:01,753 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:01,754 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:01,754 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:41:01,779 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:41:01,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 224 transitions, 478 flow [2023-08-31 20:41:01,840 INFO L130 PetriNetUnfolder]: 50/450 cut-off events. [2023-08-31 20:41:01,841 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:41:01,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1669 event pairs, 1 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-08-31 20:41:01,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 224 transitions, 478 flow [2023-08-31 20:41:01,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 224 transitions, 478 flow [2023-08-31 20:41:01,848 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:01,849 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 224 transitions, 478 flow [2023-08-31 20:41:01,849 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 224 transitions, 478 flow [2023-08-31 20:41:01,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 224 transitions, 478 flow [2023-08-31 20:41:01,897 INFO L130 PetriNetUnfolder]: 50/450 cut-off events. [2023-08-31 20:41:01,897 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:41:01,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1669 event pairs, 1 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-08-31 20:41:01,920 INFO L119 LiptonReduction]: Number of co-enabled transitions 25872 [2023-08-31 20:41:04,521 INFO L134 LiptonReduction]: Checked pairs total: 98192 [2023-08-31 20:41:04,522 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-31 20:41:04,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:04,525 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;@1d0c63b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:04,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:04,533 INFO L130 PetriNetUnfolder]: 16/114 cut-off events. [2023-08-31 20:41:04,534 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 20:41:04,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:04,534 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:41:04,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:04,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:04,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1173812367, now seen corresponding path program 1 times [2023-08-31 20:41:04,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:04,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095010479] [2023-08-31 20:41:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:04,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:04,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:04,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:04,631 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:04,632 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:04,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:41:04,632 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:04,633 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:04,633 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:04,633 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:41:04,668 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:41:04,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 270 transitions, 584 flow [2023-08-31 20:41:04,775 INFO L130 PetriNetUnfolder]: 81/698 cut-off events. [2023-08-31 20:41:04,776 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:41:04,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 698 events. 81/698 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2933 event pairs, 6 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 470. Up to 32 conditions per place. [2023-08-31 20:41:04,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 270 transitions, 584 flow [2023-08-31 20:41:04,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 270 transitions, 584 flow [2023-08-31 20:41:04,792 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:04,792 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 270 transitions, 584 flow [2023-08-31 20:41:04,792 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 270 transitions, 584 flow [2023-08-31 20:41:04,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 270 transitions, 584 flow [2023-08-31 20:41:04,889 INFO L130 PetriNetUnfolder]: 81/698 cut-off events. [2023-08-31 20:41:04,890 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:41:04,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 698 events. 81/698 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2933 event pairs, 6 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 470. Up to 32 conditions per place. [2023-08-31 20:41:04,919 INFO L119 LiptonReduction]: Number of co-enabled transitions 42768 [2023-08-31 20:41:07,567 INFO L134 LiptonReduction]: Checked pairs total: 186886 [2023-08-31 20:41:07,567 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-31 20:41:07,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:07,570 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;@1d0c63b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:07,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:07,586 INFO L130 PetriNetUnfolder]: 29/178 cut-off events. [2023-08-31 20:41:07,586 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 20:41:07,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:07,587 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:07,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:07,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:07,588 INFO L85 PathProgramCache]: Analyzing trace with hash -502962894, now seen corresponding path program 1 times [2023-08-31 20:41:07,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:07,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629964677] [2023-08-31 20:41:07,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:07,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:07,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:07,668 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:07,668 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:07,668 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:07,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:41:07,669 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:07,669 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:07,670 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:07,670 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:41:07,694 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:41:07,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 316 transitions, 692 flow [2023-08-31 20:41:07,898 INFO L130 PetriNetUnfolder]: 140/1126 cut-off events. [2023-08-31 20:41:07,899 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:41:07,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 1126 events. 140/1126 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5513 event pairs, 23 based on Foata normal form. 0/944 useless extension candidates. Maximal degree in co-relation 743. Up to 80 conditions per place. [2023-08-31 20:41:07,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 316 transitions, 692 flow [2023-08-31 20:41:07,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 316 transitions, 692 flow [2023-08-31 20:41:07,924 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:07,924 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 316 transitions, 692 flow [2023-08-31 20:41:07,924 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 316 transitions, 692 flow [2023-08-31 20:41:07,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 316 transitions, 692 flow [2023-08-31 20:41:08,119 INFO L130 PetriNetUnfolder]: 140/1126 cut-off events. [2023-08-31 20:41:08,119 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:41:08,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 1126 events. 140/1126 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5513 event pairs, 23 based on Foata normal form. 0/944 useless extension candidates. Maximal degree in co-relation 743. Up to 80 conditions per place. [2023-08-31 20:41:08,175 INFO L119 LiptonReduction]: Number of co-enabled transitions 63800 [2023-08-31 20:41:10,925 INFO L134 LiptonReduction]: Checked pairs total: 292902 [2023-08-31 20:41:10,926 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-08-31 20:41:10,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:10,928 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;@1d0c63b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:10,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:10,947 INFO L130 PetriNetUnfolder]: 40/240 cut-off events. [2023-08-31 20:41:10,947 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-31 20:41:10,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:10,948 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:10,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:10,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2036697804, now seen corresponding path program 1 times [2023-08-31 20:41:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:10,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094566165] [2023-08-31 20:41:10,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:10,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:10,972 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:10,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:10,991 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:10,992 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:10,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:41:10,992 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:10,993 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:10,993 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:10,993 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:41:11,020 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:41:11,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 328 places, 362 transitions, 802 flow [2023-08-31 20:41:11,426 INFO L130 PetriNetUnfolder]: 263/1922 cut-off events. [2023-08-31 20:41:11,426 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:41:11,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154 conditions, 1922 events. 263/1922 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11566 event pairs, 72 based on Foata normal form. 0/1628 useless extension candidates. Maximal degree in co-relation 1225. Up to 192 conditions per place. [2023-08-31 20:41:11,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 328 places, 362 transitions, 802 flow [2023-08-31 20:41:11,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 328 places, 362 transitions, 802 flow [2023-08-31 20:41:11,464 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:11,464 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 328 places, 362 transitions, 802 flow [2023-08-31 20:41:11,464 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 328 places, 362 transitions, 802 flow [2023-08-31 20:41:11,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 328 places, 362 transitions, 802 flow [2023-08-31 20:41:11,878 INFO L130 PetriNetUnfolder]: 263/1922 cut-off events. [2023-08-31 20:41:11,879 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:41:11,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154 conditions, 1922 events. 263/1922 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11566 event pairs, 72 based on Foata normal form. 0/1628 useless extension candidates. Maximal degree in co-relation 1225. Up to 192 conditions per place. [2023-08-31 20:41:11,985 INFO L119 LiptonReduction]: Number of co-enabled transitions 88968 [2023-08-31 20:41:15,105 INFO L134 LiptonReduction]: Checked pairs total: 419879 [2023-08-31 20:41:15,106 INFO L136 LiptonReduction]: Total number of compositions: 192 [2023-08-31 20:41:15,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:15,108 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;@1d0c63b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:15,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:15,137 INFO L130 PetriNetUnfolder]: 58/324 cut-off events. [2023-08-31 20:41:15,138 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-08-31 20:41:15,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:15,138 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:15,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:15,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:15,139 INFO L85 PathProgramCache]: Analyzing trace with hash -862984050, now seen corresponding path program 1 times [2023-08-31 20:41:15,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:15,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318329505] [2023-08-31 20:41:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:15,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:15,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:15,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:15,185 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:15,185 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:15,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:41:15,185 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:15,186 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:15,186 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:15,186 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:41:15,222 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:41:15,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 408 transitions, 914 flow [2023-08-31 20:41:16,024 INFO L130 PetriNetUnfolder]: 530/3470 cut-off events. [2023-08-31 20:41:16,025 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:41:16,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3968 conditions, 3470 events. 530/3470 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 25155 event pairs, 201 based on Foata normal form. 0/2968 useless extension candidates. Maximal degree in co-relation 2140. Up to 448 conditions per place. [2023-08-31 20:41:16,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 408 transitions, 914 flow [2023-08-31 20:41:16,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 369 places, 408 transitions, 914 flow [2023-08-31 20:41:16,124 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:16,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 369 places, 408 transitions, 914 flow [2023-08-31 20:41:16,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 369 places, 408 transitions, 914 flow [2023-08-31 20:41:16,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 408 transitions, 914 flow [2023-08-31 20:41:16,887 INFO L130 PetriNetUnfolder]: 530/3470 cut-off events. [2023-08-31 20:41:16,887 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:41:16,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3968 conditions, 3470 events. 530/3470 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 25155 event pairs, 201 based on Foata normal form. 0/2968 useless extension candidates. Maximal degree in co-relation 2140. Up to 448 conditions per place. [2023-08-31 20:41:17,086 INFO L119 LiptonReduction]: Number of co-enabled transitions 118272 [2023-08-31 20:41:20,118 INFO L134 LiptonReduction]: Checked pairs total: 505439 [2023-08-31 20:41:20,118 INFO L136 LiptonReduction]: Total number of compositions: 208 [2023-08-31 20:41:20,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:20,120 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;@1d0c63b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:20,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:20,162 INFO L130 PetriNetUnfolder]: 77/418 cut-off events. [2023-08-31 20:41:20,163 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-31 20:41:20,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:20,163 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:20,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:20,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:20,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1957491094, now seen corresponding path program 1 times [2023-08-31 20:41:20,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:20,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848430950] [2023-08-31 20:41:20,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:20,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:20,209 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:20,252 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:20,258 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:20,258 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:20,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:41:20,259 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:20,259 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:20,260 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:20,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:41:20,293 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:41:20,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 410 places, 454 transitions, 1028 flow [2023-08-31 20:41:21,777 INFO L130 PetriNetUnfolder]: 1117/6554 cut-off events. [2023-08-31 20:41:21,778 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:41:21,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 6554 events. 1117/6554 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 56376 event pairs, 522 based on Foata normal form. 0/5652 useless extension candidates. Maximal degree in co-relation 3952. Up to 1024 conditions per place. [2023-08-31 20:41:21,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 410 places, 454 transitions, 1028 flow [2023-08-31 20:41:21,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 410 places, 454 transitions, 1028 flow [2023-08-31 20:41:21,925 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:21,925 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 410 places, 454 transitions, 1028 flow [2023-08-31 20:41:21,925 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 410 places, 454 transitions, 1028 flow [2023-08-31 20:41:21,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 410 places, 454 transitions, 1028 flow [2023-08-31 20:41:23,311 INFO L130 PetriNetUnfolder]: 1117/6554 cut-off events. [2023-08-31 20:41:23,312 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:41:23,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 6554 events. 1117/6554 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 56376 event pairs, 522 based on Foata normal form. 0/5652 useless extension candidates. Maximal degree in co-relation 3952. Up to 1024 conditions per place. [2023-08-31 20:41:23,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 151712 [2023-08-31 20:41:27,215 INFO L134 LiptonReduction]: Checked pairs total: 659986 [2023-08-31 20:41:27,215 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-08-31 20:41:27,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:27,217 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;@1d0c63b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:27,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:27,279 INFO L130 PetriNetUnfolder]: 109/553 cut-off events. [2023-08-31 20:41:27,279 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-08-31 20:41:27,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:27,280 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:27,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:27,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:27,281 INFO L85 PathProgramCache]: Analyzing trace with hash 844107528, now seen corresponding path program 1 times [2023-08-31 20:41:27,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:27,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328429978] [2023-08-31 20:41:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:27,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:27,329 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:27,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:27,361 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:27,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:27,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:41:27,362 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:27,364 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:27,364 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:27,366 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:41:27,398 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:41:27,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 451 places, 500 transitions, 1144 flow [2023-08-31 20:41:30,456 INFO L130 PetriNetUnfolder]: 2408/12774 cut-off events. [2023-08-31 20:41:30,457 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:41:30,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15151 conditions, 12774 events. 2408/12774 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 127318 event pairs, 1291 based on Foata normal form. 0/11088 useless extension candidates. Maximal degree in co-relation 7621. Up to 2304 conditions per place. [2023-08-31 20:41:30,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 451 places, 500 transitions, 1144 flow [2023-08-31 20:41:30,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 451 places, 500 transitions, 1144 flow [2023-08-31 20:41:30,791 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:30,792 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 451 places, 500 transitions, 1144 flow [2023-08-31 20:41:30,792 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 451 places, 500 transitions, 1144 flow [2023-08-31 20:41:30,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 451 places, 500 transitions, 1144 flow [2023-08-31 20:41:33,761 INFO L130 PetriNetUnfolder]: 2408/12774 cut-off events. [2023-08-31 20:41:33,761 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:41:34,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15151 conditions, 12774 events. 2408/12774 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 127318 event pairs, 1291 based on Foata normal form. 0/11088 useless extension candidates. Maximal degree in co-relation 7621. Up to 2304 conditions per place. [2023-08-31 20:41:34,726 INFO L119 LiptonReduction]: Number of co-enabled transitions 189288 [2023-08-31 20:41:38,174 INFO L134 LiptonReduction]: Checked pairs total: 824368 [2023-08-31 20:41:38,175 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-08-31 20:41:38,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:38,177 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;@1d0c63b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:38,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:38,270 INFO L130 PetriNetUnfolder]: 155/734 cut-off events. [2023-08-31 20:41:38,270 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-08-31 20:41:38,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:38,270 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:38,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:38,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:38,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1939299236, now seen corresponding path program 1 times [2023-08-31 20:41:38,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:38,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512063052] [2023-08-31 20:41:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:38,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:38,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:38,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:38,311 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:38,311 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:38,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:41:38,311 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:38,312 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:38,312 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:38,312 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:41:38,343 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:41:38,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 492 places, 546 transitions, 1262 flow [2023-08-31 20:41:45,110 INFO L130 PetriNetUnfolder]: 5235/25394 cut-off events. [2023-08-31 20:41:45,111 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:41:45,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30600 conditions, 25394 events. 5235/25394 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 288412 event pairs, 3084 based on Foata normal form. 0/22156 useless extension candidates. Maximal degree in co-relation 15131. Up to 5120 conditions per place. [2023-08-31 20:41:45,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 492 places, 546 transitions, 1262 flow [2023-08-31 20:41:46,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 492 places, 546 transitions, 1262 flow [2023-08-31 20:41:46,077 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:46,077 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 492 places, 546 transitions, 1262 flow [2023-08-31 20:41:46,078 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 492 places, 546 transitions, 1262 flow [2023-08-31 20:41:46,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 492 places, 546 transitions, 1262 flow [2023-08-31 20:41:53,027 INFO L130 PetriNetUnfolder]: 5235/25394 cut-off events. [2023-08-31 20:41:53,028 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:41:53,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30600 conditions, 25394 events. 5235/25394 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 288412 event pairs, 3084 based on Foata normal form. 0/22156 useless extension candidates. Maximal degree in co-relation 15131. Up to 5120 conditions per place. [2023-08-31 20:41:55,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 231000 [2023-08-31 20:41:58,729 INFO L134 LiptonReduction]: Checked pairs total: 1025831 [2023-08-31 20:41:58,729 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-08-31 20:41:58,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:58,732 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;@1d0c63b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:58,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:58,829 INFO L130 PetriNetUnfolder]: 230/998 cut-off events. [2023-08-31 20:41:58,830 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-08-31 20:41:58,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:58,830 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:58,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:58,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:58,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2139910651, now seen corresponding path program 1 times [2023-08-31 20:41:58,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:58,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083912377] [2023-08-31 20:41:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:58,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:58,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:58,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:58,887 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:58,888 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:58,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:41:58,888 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:58,888 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:58,889 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:58,889 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:41:58,924 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:41:58,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 533 places, 592 transitions, 1382 flow [2023-08-31 20:42:14,396 INFO L130 PetriNetUnfolder]: 11390/51070 cut-off events. [2023-08-31 20:42:14,397 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:42:17,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62434 conditions, 51070 events. 11390/51070 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 644745 event pairs, 7181 based on Foata normal form. 0/44744 useless extension candidates. Maximal degree in co-relation 30578. Up to 11264 conditions per place. [2023-08-31 20:42:17,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 533 places, 592 transitions, 1382 flow [2023-08-31 20:42:18,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 533 places, 592 transitions, 1382 flow [2023-08-31 20:42:18,036 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:18,037 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 533 places, 592 transitions, 1382 flow [2023-08-31 20:42:18,037 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 533 places, 592 transitions, 1382 flow [2023-08-31 20:42:18,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 533 places, 592 transitions, 1382 flow [2023-08-31 20:42:32,879 INFO L130 PetriNetUnfolder]: 11390/51070 cut-off events. [2023-08-31 20:42:32,880 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:42:35,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62434 conditions, 51070 events. 11390/51070 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 644745 event pairs, 7181 based on Foata normal form. 0/44744 useless extension candidates. Maximal degree in co-relation 30578. Up to 11264 conditions per place. [2023-08-31 20:42:38,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 276848 [2023-08-31 20:42:42,379 INFO L134 LiptonReduction]: Checked pairs total: 1232449 [2023-08-31 20:42:42,379 INFO L136 LiptonReduction]: Total number of compositions: 288 [2023-08-31 20:42:42,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:42,380 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;@1d0c63b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:42,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:42,546 INFO L130 PetriNetUnfolder]: 356/1395 cut-off events. [2023-08-31 20:42:42,546 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-08-31 20:42:42,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:42,546 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:42,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:42,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1293042888, now seen corresponding path program 1 times [2023-08-31 20:42:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:42,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076883618] [2023-08-31 20:42:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:42,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:42,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:42,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:42,591 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:42,592 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:42,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:42:42,592 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:42,598 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:42,599 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:42,599 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:42:42,635 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:42:42,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 574 places, 638 transitions, 1504 flow [2023-08-31 20:43:18,209 INFO L130 PetriNetUnfolder]: 24713/103370 cut-off events. [2023-08-31 20:43:18,209 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:43:26,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128061 conditions, 103370 events. 24713/103370 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 1431219 event pairs, 16398 based on Foata normal form. 0/90884 useless extension candidates. Maximal degree in co-relation 62410. Up to 24576 conditions per place. [2023-08-31 20:43:26,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 574 places, 638 transitions, 1504 flow [2023-08-31 20:43:28,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 574 places, 638 transitions, 1504 flow [2023-08-31 20:43:28,074 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:43:28,074 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 574 places, 638 transitions, 1504 flow [2023-08-31 20:43:28,074 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 574 places, 638 transitions, 1504 flow [2023-08-31 20:43:28,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 574 places, 638 transitions, 1504 flow [2023-08-31 20:44:00,488 INFO L130 PetriNetUnfolder]: 24713/103370 cut-off events. [2023-08-31 20:44:00,488 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:44:08,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128061 conditions, 103370 events. 24713/103370 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 1431219 event pairs, 16398 based on Foata normal form. 0/90884 useless extension candidates. Maximal degree in co-relation 62410. Up to 24576 conditions per place. [2023-08-31 20:44:22,738 INFO L119 LiptonReduction]: Number of co-enabled transitions 326832 [2023-08-31 20:44:26,447 INFO L134 LiptonReduction]: Checked pairs total: 1467163 [2023-08-31 20:44:26,447 INFO L136 LiptonReduction]: Total number of compositions: 307 [2023-08-31 20:44:26,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:44:26,449 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;@1d0c63b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:44:26,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:44:26,689 INFO L130 PetriNetUnfolder]: 568/2003 cut-off events. [2023-08-31 20:44:26,690 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-08-31 20:44:26,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:44:26,690 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 20:44:26,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:44:26,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:44:26,691 INFO L85 PathProgramCache]: Analyzing trace with hash 296834039, now seen corresponding path program 1 times [2023-08-31 20:44:26,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:44:26,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603631126] [2023-08-31 20:44:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:44:26,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:44:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:26,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:44:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:26,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:44:26,736 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:44:26,737 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:44:26,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:44:26,737 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:44:26,738 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:44:26,738 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:44:26,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:44:26,780 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:44:26,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 615 places, 684 transitions, 1628 flow [2023-08-31 20:45:45,695 INFO L130 PetriNetUnfolder]: 53396/209942 cut-off events. [2023-08-31 20:45:45,696 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-08-31 20:46:05,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263321 conditions, 209942 events. 53396/209942 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2518. Compared 3175004 event pairs, 36879 based on Foata normal form. 0/185152 useless extension candidates. Maximal degree in co-relation 128035. Up to 53248 conditions per place. [2023-08-31 20:46:05,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 615 places, 684 transitions, 1628 flow