./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_27-funptr_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 10:59:23,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:59:23,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:59:23,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:59:23,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:59:23,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:59:23,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:59:23,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:59:23,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:59:23,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:59:23,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:59:23,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:59:23,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:59:23,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:59:23,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:59:23,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:59:23,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:59:23,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:59:23,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:59:23,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:59:23,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:59:23,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:59:23,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:59:23,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:59:23,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:59:23,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:59:23,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:59:23,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:59:23,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:59:23,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:59:23,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:59:23,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:59:23,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:59:23,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:59:23,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:59:23,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:59:23,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:59:23,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:59:23,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:59:23,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:59:23,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:59:23,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:59:23,954 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:59:23,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:59:23,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:59:23,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:59:23,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:59:23,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:59:23,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:59:23,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:59:23,959 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:59:23,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:59:23,960 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:59:23,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:59:23,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:59:23,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:59:23,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:59:23,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:59:23,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:59:23,962 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:59:23,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:59:23,962 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:59:23,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:59:23,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:59:23,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:59:23,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:59:23,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:59:23,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:59:23,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:59:23,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:59:23,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:59:23,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:59:23,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:59:23,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:59:23,964 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:59:23,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:59:23,965 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:59:23,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:59:24,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:59:24,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:59:24,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:59:24,223 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:59:24,223 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:59:24,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-09-01 10:59:25,195 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:59:25,437 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:59:25,441 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-09-01 10:59:25,456 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78e999b1b/65bae1995fd84536b00c7c815df65269/FLAG556d99fd4 [2023-09-01 10:59:25,469 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78e999b1b/65bae1995fd84536b00c7c815df65269 [2023-09-01 10:59:25,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:59:25,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:59:25,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:59:25,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:59:25,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:59:25,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:25,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549972e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25, skipping insertion in model container [2023-09-01 10:59:25,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:25,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:59:25,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:59:25,836 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_27-funptr_racing.i[41323,41336] [2023-09-01 10:59:25,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:59:25,857 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:59:25,876 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_27-funptr_racing.i[41323,41336] [2023-09-01 10:59:25,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:59:25,930 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 10:59:25,934 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:59:25,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25 WrapperNode [2023-09-01 10:59:25,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:59:25,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:59:25,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:59:25,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:59:25,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:25,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:25,970 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 148 [2023-09-01 10:59:25,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:59:25,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:59:25,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:59:25,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:59:25,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:25,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:25,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:25,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:25,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:25,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:25,999 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:25,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:26,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:59:26,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:59:26,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:59:26,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:59:26,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25" (1/1) ... [2023-09-01 10:59:26,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:59:26,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:59:26,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 10:59:26,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 10:59:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:59:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:59:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:59:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:59:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:59:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:59:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:59:26,054 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:59:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:59:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:59:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:59:26,056 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 10:59:26,164 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:59:26,165 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:59:26,343 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:59:26,349 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:59:26,350 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-09-01 10:59:26,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:59:26 BoogieIcfgContainer [2023-09-01 10:59:26,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:59:26,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:59:26,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:59:26,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:59:26,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:59:25" (1/3) ... [2023-09-01 10:59:26,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65103e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:59:26, skipping insertion in model container [2023-09-01 10:59:26,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:59:25" (2/3) ... [2023-09-01 10:59:26,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65103e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:59:26, skipping insertion in model container [2023-09-01 10:59:26,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:59:26" (3/3) ... [2023-09-01 10:59:26,365 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-09-01 10:59:26,370 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:59:26,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:59:26,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:59:26,376 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:59:26,431 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:59:26,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 145 transitions, 298 flow [2023-09-01 10:59:26,505 INFO L130 PetriNetUnfolder]: 24/182 cut-off events. [2023-09-01 10:59:26,506 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:59:26,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 24/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 486 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2023-09-01 10:59:26,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 145 transitions, 298 flow [2023-09-01 10:59:26,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 140 transitions, 285 flow [2023-09-01 10:59:26,518 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:26,522 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 140 transitions, 285 flow [2023-09-01 10:59:26,524 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 140 transitions, 285 flow [2023-09-01 10:59:26,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 140 transitions, 285 flow [2023-09-01 10:59:26,546 INFO L130 PetriNetUnfolder]: 23/177 cut-off events. [2023-09-01 10:59:26,546 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:59:26,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 177 events. 23/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 478 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2023-09-01 10:59:26,549 INFO L119 LiptonReduction]: Number of co-enabled transitions 5332 [2023-09-01 10:59:29,233 INFO L134 LiptonReduction]: Checked pairs total: 11408 [2023-09-01 10:59:29,233 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-09-01 10:59:29,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:29,258 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;@48ef112b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:29,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:29,262 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2023-09-01 10:59:29,262 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:59:29,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:29,263 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:59:29,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:29,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash -317765364, now seen corresponding path program 1 times [2023-09-01 10:59:29,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:29,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227196158] [2023-09-01 10:59:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:29,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:29,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:29,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:29,381 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:29,381 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:29,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:59:29,383 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:29,384 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:29,385 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:29,385 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:59:29,400 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:59:29,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 209 transitions, 436 flow [2023-09-01 10:59:29,449 INFO L130 PetriNetUnfolder]: 45/307 cut-off events. [2023-09-01 10:59:29,450 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:59:29,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 45/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1043 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2023-09-01 10:59:29,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 209 transitions, 436 flow [2023-09-01 10:59:29,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 209 transitions, 436 flow [2023-09-01 10:59:29,458 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:29,458 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 209 transitions, 436 flow [2023-09-01 10:59:29,458 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 209 transitions, 436 flow [2023-09-01 10:59:29,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 209 transitions, 436 flow [2023-09-01 10:59:29,496 INFO L130 PetriNetUnfolder]: 45/307 cut-off events. [2023-09-01 10:59:29,496 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:59:29,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 45/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1043 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2023-09-01 10:59:29,510 INFO L119 LiptonReduction]: Number of co-enabled transitions 19716 [2023-09-01 10:59:32,129 INFO L134 LiptonReduction]: Checked pairs total: 53799 [2023-09-01 10:59:32,130 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-09-01 10:59:32,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:32,132 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;@48ef112b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:32,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:32,136 INFO L130 PetriNetUnfolder]: 13/73 cut-off events. [2023-09-01 10:59:32,136 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 10:59:32,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:32,136 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:59:32,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:32,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1519777946, now seen corresponding path program 1 times [2023-09-01 10:59:32,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:32,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373912831] [2023-09-01 10:59:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:32,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:32,164 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:32,189 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:32,189 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:32,189 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:32,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:59:32,190 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:32,190 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:32,190 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:32,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:59:32,211 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 10:59:32,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 273 transitions, 576 flow [2023-09-01 10:59:32,266 INFO L130 PetriNetUnfolder]: 71/463 cut-off events. [2023-09-01 10:59:32,266 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:59:32,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 463 events. 71/463 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1761 event pairs, 1 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 315. Up to 16 conditions per place. [2023-09-01 10:59:32,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 273 transitions, 576 flow [2023-09-01 10:59:32,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 273 transitions, 576 flow [2023-09-01 10:59:32,275 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:32,275 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 273 transitions, 576 flow [2023-09-01 10:59:32,276 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 273 transitions, 576 flow [2023-09-01 10:59:32,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 273 transitions, 576 flow [2023-09-01 10:59:32,319 INFO L130 PetriNetUnfolder]: 71/463 cut-off events. [2023-09-01 10:59:32,320 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:59:32,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 463 events. 71/463 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1761 event pairs, 1 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 315. Up to 16 conditions per place. [2023-09-01 10:59:32,337 INFO L119 LiptonReduction]: Number of co-enabled transitions 41664 [2023-09-01 10:59:35,161 INFO L134 LiptonReduction]: Checked pairs total: 123367 [2023-09-01 10:59:35,161 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-09-01 10:59:35,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:35,164 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;@48ef112b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:35,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:35,170 INFO L130 PetriNetUnfolder]: 25/121 cut-off events. [2023-09-01 10:59:35,170 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 10:59:35,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:35,171 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:59:35,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:35,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:35,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1456078674, now seen corresponding path program 1 times [2023-09-01 10:59:35,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:35,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370454551] [2023-09-01 10:59:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:35,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:35,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:35,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:35,219 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:35,219 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:35,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:59:35,219 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:35,220 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:35,220 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:35,220 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:59:35,246 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:59:35,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 337 transitions, 718 flow [2023-09-01 10:59:35,334 INFO L130 PetriNetUnfolder]: 109/683 cut-off events. [2023-09-01 10:59:35,335 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:59:35,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 683 events. 109/683 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2924 event pairs, 6 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 483. Up to 32 conditions per place. [2023-09-01 10:59:35,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 285 places, 337 transitions, 718 flow [2023-09-01 10:59:35,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 337 transitions, 718 flow [2023-09-01 10:59:35,347 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:35,347 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 285 places, 337 transitions, 718 flow [2023-09-01 10:59:35,348 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 285 places, 337 transitions, 718 flow [2023-09-01 10:59:35,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 337 transitions, 718 flow [2023-09-01 10:59:35,428 INFO L130 PetriNetUnfolder]: 109/683 cut-off events. [2023-09-01 10:59:35,429 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:59:35,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 683 events. 109/683 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2924 event pairs, 6 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 483. Up to 32 conditions per place. [2023-09-01 10:59:35,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 71672 [2023-09-01 10:59:38,504 INFO L134 LiptonReduction]: Checked pairs total: 241720 [2023-09-01 10:59:38,504 INFO L136 LiptonReduction]: Total number of compositions: 212 [2023-09-01 10:59:38,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:38,506 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;@48ef112b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:38,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:38,518 INFO L130 PetriNetUnfolder]: 41/178 cut-off events. [2023-09-01 10:59:38,518 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 10:59:38,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:38,519 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:59:38,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:38,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:38,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2036890843, now seen corresponding path program 1 times [2023-09-01 10:59:38,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:38,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770296622] [2023-09-01 10:59:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:38,572 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:38,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:38,612 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:38,612 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:38,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:59:38,613 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:38,613 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:38,613 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:38,613 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:59:38,641 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 10:59:38,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 401 transitions, 862 flow [2023-09-01 10:59:38,796 INFO L130 PetriNetUnfolder]: 175/1035 cut-off events. [2023-09-01 10:59:38,796 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:59:38,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1146 conditions, 1035 events. 175/1035 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4940 event pairs, 23 based on Foata normal form. 0/870 useless extension candidates. Maximal degree in co-relation 728. Up to 80 conditions per place. [2023-09-01 10:59:38,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 401 transitions, 862 flow [2023-09-01 10:59:38,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 337 places, 401 transitions, 862 flow [2023-09-01 10:59:38,815 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:38,815 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 337 places, 401 transitions, 862 flow [2023-09-01 10:59:38,815 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 337 places, 401 transitions, 862 flow [2023-09-01 10:59:38,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 401 transitions, 862 flow [2023-09-01 10:59:38,981 INFO L130 PetriNetUnfolder]: 175/1035 cut-off events. [2023-09-01 10:59:38,982 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:59:38,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1146 conditions, 1035 events. 175/1035 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4940 event pairs, 23 based on Foata normal form. 0/870 useless extension candidates. Maximal degree in co-relation 728. Up to 80 conditions per place. [2023-09-01 10:59:39,025 INFO L119 LiptonReduction]: Number of co-enabled transitions 109740 [2023-09-01 10:59:42,329 INFO L134 LiptonReduction]: Checked pairs total: 381627 [2023-09-01 10:59:42,329 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-09-01 10:59:42,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:42,331 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;@48ef112b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:42,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:42,347 INFO L130 PetriNetUnfolder]: 64/253 cut-off events. [2023-09-01 10:59:42,348 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-09-01 10:59:42,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:42,348 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:59:42,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:42,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:42,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2084509546, now seen corresponding path program 1 times [2023-09-01 10:59:42,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:42,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840419173] [2023-09-01 10:59:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:42,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:42,382 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:42,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:42,395 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:42,395 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:42,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:59:42,395 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:42,396 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:42,396 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:42,396 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:59:42,416 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 10:59:42,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 465 transitions, 1008 flow [2023-09-01 10:59:42,692 INFO L130 PetriNetUnfolder]: 305/1659 cut-off events. [2023-09-01 10:59:42,692 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:59:42,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1891 conditions, 1659 events. 305/1659 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9207 event pairs, 72 based on Foata normal form. 0/1411 useless extension candidates. Maximal degree in co-relation 1134. Up to 192 conditions per place. [2023-09-01 10:59:42,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 389 places, 465 transitions, 1008 flow [2023-09-01 10:59:42,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 465 transitions, 1008 flow [2023-09-01 10:59:42,765 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:42,765 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 465 transitions, 1008 flow [2023-09-01 10:59:42,765 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 465 transitions, 1008 flow [2023-09-01 10:59:42,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 465 transitions, 1008 flow [2023-09-01 10:59:43,062 INFO L130 PetriNetUnfolder]: 305/1659 cut-off events. [2023-09-01 10:59:43,062 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:59:43,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1891 conditions, 1659 events. 305/1659 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9207 event pairs, 72 based on Foata normal form. 0/1411 useless extension candidates. Maximal degree in co-relation 1134. Up to 192 conditions per place. [2023-09-01 10:59:43,187 INFO L119 LiptonReduction]: Number of co-enabled transitions 155868 [2023-09-01 10:59:46,941 INFO L134 LiptonReduction]: Checked pairs total: 483423 [2023-09-01 10:59:46,941 INFO L136 LiptonReduction]: Total number of compositions: 282 [2023-09-01 10:59:46,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:46,943 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;@48ef112b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:46,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:46,965 INFO L130 PetriNetUnfolder]: 84/325 cut-off events. [2023-09-01 10:59:46,965 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-09-01 10:59:46,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:46,966 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:59:46,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:46,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:46,966 INFO L85 PathProgramCache]: Analyzing trace with hash 148348408, now seen corresponding path program 1 times [2023-09-01 10:59:46,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:46,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688072166] [2023-09-01 10:59:46,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:46,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:46,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:47,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:47,002 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:47,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:47,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:59:47,002 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:47,005 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:47,005 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:47,005 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:59:47,032 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 10:59:47,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 529 transitions, 1156 flow [2023-09-01 10:59:47,639 INFO L130 PetriNetUnfolder]: 579/2843 cut-off events. [2023-09-01 10:59:47,640 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:59:47,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3341 conditions, 2843 events. 579/2843 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 18707 event pairs, 201 based on Foata normal form. 0/2448 useless extension candidates. Maximal degree in co-relation 1877. Up to 448 conditions per place. [2023-09-01 10:59:47,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 441 places, 529 transitions, 1156 flow [2023-09-01 10:59:47,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 441 places, 529 transitions, 1156 flow [2023-09-01 10:59:47,710 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:47,710 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 441 places, 529 transitions, 1156 flow [2023-09-01 10:59:47,710 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 441 places, 529 transitions, 1156 flow [2023-09-01 10:59:47,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 529 transitions, 1156 flow [2023-09-01 10:59:48,325 INFO L130 PetriNetUnfolder]: 579/2843 cut-off events. [2023-09-01 10:59:48,325 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:59:48,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3341 conditions, 2843 events. 579/2843 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 18707 event pairs, 201 based on Foata normal form. 0/2448 useless extension candidates. Maximal degree in co-relation 1877. Up to 448 conditions per place. [2023-09-01 10:59:48,514 INFO L119 LiptonReduction]: Number of co-enabled transitions 210056 [2023-09-01 10:59:52,510 INFO L134 LiptonReduction]: Checked pairs total: 677870 [2023-09-01 10:59:52,510 INFO L136 LiptonReduction]: Total number of compositions: 323 [2023-09-01 10:59:52,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:52,511 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;@48ef112b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:52,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:52,543 INFO L130 PetriNetUnfolder]: 107/405 cut-off events. [2023-09-01 10:59:52,543 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 10:59:52,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:52,544 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:59:52,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:52,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:52,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1240225827, now seen corresponding path program 1 times [2023-09-01 10:59:52,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:52,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119347632] [2023-09-01 10:59:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:52,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:52,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:52,573 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:52,573 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:52,573 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:52,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:59:52,573 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:52,574 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:52,574 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:52,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:59:52,602 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:59:52,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 493 places, 593 transitions, 1306 flow [2023-09-01 10:59:53,856 INFO L130 PetriNetUnfolder]: 1173/5179 cut-off events. [2023-09-01 10:59:53,857 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:59:53,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6264 conditions, 5179 events. 1173/5179 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 39830 event pairs, 522 based on Foata normal form. 0/4509 useless extension candidates. Maximal degree in co-relation 3325. Up to 1024 conditions per place. [2023-09-01 10:59:53,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 493 places, 593 transitions, 1306 flow [2023-09-01 10:59:54,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 493 places, 593 transitions, 1306 flow [2023-09-01 10:59:54,006 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:54,006 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 493 places, 593 transitions, 1306 flow [2023-09-01 10:59:54,007 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 493 places, 593 transitions, 1306 flow [2023-09-01 10:59:54,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 493 places, 593 transitions, 1306 flow [2023-09-01 10:59:55,219 INFO L130 PetriNetUnfolder]: 1173/5179 cut-off events. [2023-09-01 10:59:55,219 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:59:55,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6264 conditions, 5179 events. 1173/5179 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 39830 event pairs, 522 based on Foata normal form. 0/4509 useless extension candidates. Maximal degree in co-relation 3325. Up to 1024 conditions per place. [2023-09-01 10:59:55,733 INFO L119 LiptonReduction]: Number of co-enabled transitions 272304 [2023-09-01 10:59:59,799 INFO L134 LiptonReduction]: Checked pairs total: 865789 [2023-09-01 10:59:59,799 INFO L136 LiptonReduction]: Total number of compositions: 355 [2023-09-01 10:59:59,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:59,801 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;@48ef112b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:59,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:59,844 INFO L130 PetriNetUnfolder]: 135/500 cut-off events. [2023-09-01 10:59:59,844 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-09-01 10:59:59,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:59,844 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:59:59,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:59,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:59,845 INFO L85 PathProgramCache]: Analyzing trace with hash 365312086, now seen corresponding path program 1 times [2023-09-01 10:59:59,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:59,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028414547] [2023-09-01 10:59:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:59,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:59,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:59,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:59,894 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:59,894 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:59,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:59:59,894 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:59,895 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:59,896 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:59,896 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:59:59,927 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 10:59:59,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 545 places, 657 transitions, 1458 flow [2023-09-01 11:00:02,674 INFO L130 PetriNetUnfolder]: 2471/9883 cut-off events. [2023-09-01 11:00:02,675 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:00:02,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12260 conditions, 9883 events. 2471/9883 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 89681 event pairs, 1291 based on Foata normal form. 0/8682 useless extension candidates. Maximal degree in co-relation 6246. Up to 2304 conditions per place. [2023-09-01 11:00:02,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 545 places, 657 transitions, 1458 flow [2023-09-01 11:00:03,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 545 places, 657 transitions, 1458 flow [2023-09-01 11:00:03,007 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:03,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 545 places, 657 transitions, 1458 flow [2023-09-01 11:00:03,008 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 545 places, 657 transitions, 1458 flow [2023-09-01 11:00:03,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 545 places, 657 transitions, 1458 flow [2023-09-01 11:00:05,914 INFO L130 PetriNetUnfolder]: 2471/9883 cut-off events. [2023-09-01 11:00:05,915 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:00:06,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12260 conditions, 9883 events. 2471/9883 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 89681 event pairs, 1291 based on Foata normal form. 0/8682 useless extension candidates. Maximal degree in co-relation 6246. Up to 2304 conditions per place. [2023-09-01 11:00:06,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 342612 [2023-09-01 11:00:11,662 INFO L134 LiptonReduction]: Checked pairs total: 1103126 [2023-09-01 11:00:11,662 INFO L136 LiptonReduction]: Total number of compositions: 395 [2023-09-01 11:00:11,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:00:11,664 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;@48ef112b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:00:11,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:00:11,733 INFO L130 PetriNetUnfolder]: 172/619 cut-off events. [2023-09-01 11:00:11,733 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-09-01 11:00:11,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:00:11,733 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:00:11,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:00:11,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:00:11,734 INFO L85 PathProgramCache]: Analyzing trace with hash 474289113, now seen corresponding path program 1 times [2023-09-01 11:00:11,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:00:11,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331849018] [2023-09-01 11:00:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:00:11,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:00:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:11,757 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:00:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:11,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:00:11,778 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:00:11,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:00:11,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 11:00:11,778 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:00:11,780 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:00:11,780 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:00:11,780 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 11:00:11,811 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 11:00:11,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 597 places, 721 transitions, 1612 flow [2023-09-01 11:00:18,321 INFO L130 PetriNetUnfolder]: 5305/19451 cut-off events. [2023-09-01 11:00:18,321 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:00:18,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24657 conditions, 19451 events. 5305/19451 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 195959 event pairs, 3084 based on Foata normal form. 0/17207 useless extension candidates. Maximal degree in co-relation 12240. Up to 5120 conditions per place. [2023-09-01 11:00:18,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 597 places, 721 transitions, 1612 flow [2023-09-01 11:00:19,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 597 places, 721 transitions, 1612 flow [2023-09-01 11:00:19,105 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:19,105 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 597 places, 721 transitions, 1612 flow [2023-09-01 11:00:19,105 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 597 places, 721 transitions, 1612 flow [2023-09-01 11:00:19,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 597 places, 721 transitions, 1612 flow [2023-09-01 11:00:25,382 INFO L130 PetriNetUnfolder]: 5305/19451 cut-off events. [2023-09-01 11:00:25,383 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:00:25,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24657 conditions, 19451 events. 5305/19451 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 195959 event pairs, 3084 based on Foata normal form. 0/17207 useless extension candidates. Maximal degree in co-relation 12240. Up to 5120 conditions per place. [2023-09-01 11:00:27,447 INFO L119 LiptonReduction]: Number of co-enabled transitions 420980 [2023-09-01 11:00:32,773 INFO L134 LiptonReduction]: Checked pairs total: 1351700 [2023-09-01 11:00:32,773 INFO L136 LiptonReduction]: Total number of compositions: 431 [2023-09-01 11:00:32,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:00:32,775 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;@48ef112b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:00:32,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:00:32,862 INFO L130 PetriNetUnfolder]: 224/773 cut-off events. [2023-09-01 11:00:32,862 INFO L131 PetriNetUnfolder]: For 371/371 co-relation queries the response was YES. [2023-09-01 11:00:32,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:00:32,863 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:00:32,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:00:32,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:00:32,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1234622621, now seen corresponding path program 1 times [2023-09-01 11:00:32,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:00:32,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069058753] [2023-09-01 11:00:32,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:00:32,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:00:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:32,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:00:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:32,912 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:00:32,912 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:00:32,912 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:00:32,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 11:00:32,912 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:00:32,915 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:00:32,915 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:00:32,915 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 11:00:32,953 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 11:00:32,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 649 places, 785 transitions, 1768 flow [2023-09-01 11:00:46,906 INFO L130 PetriNetUnfolder]: 11467/39003 cut-off events. [2023-09-01 11:00:46,906 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:00:47,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50367 conditions, 39003 events. 11467/39003 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 445191 event pairs, 7181 based on Foata normal form. 0/34692 useless extension candidates. Maximal degree in co-relation 24635. Up to 11264 conditions per place. [2023-09-01 11:00:47,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 649 places, 785 transitions, 1768 flow [2023-09-01 11:00:48,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 649 places, 785 transitions, 1768 flow [2023-09-01 11:00:48,940 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:48,940 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 649 places, 785 transitions, 1768 flow [2023-09-01 11:00:48,940 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 649 places, 785 transitions, 1768 flow [2023-09-01 11:00:48,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 649 places, 785 transitions, 1768 flow [2023-09-01 11:01:02,746 INFO L130 PetriNetUnfolder]: 11467/39003 cut-off events. [2023-09-01 11:01:02,746 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:01:03,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50367 conditions, 39003 events. 11467/39003 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 445191 event pairs, 7181 based on Foata normal form. 0/34692 useless extension candidates. Maximal degree in co-relation 24635. Up to 11264 conditions per place. [2023-09-01 11:01:07,027 INFO L119 LiptonReduction]: Number of co-enabled transitions 507408 [2023-09-01 11:01:12,224 INFO L134 LiptonReduction]: Checked pairs total: 1635536 [2023-09-01 11:01:12,224 INFO L136 LiptonReduction]: Total number of compositions: 468 [2023-09-01 11:01:12,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:12,226 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;@48ef112b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:12,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:12,341 INFO L130 PetriNetUnfolder]: 300/981 cut-off events. [2023-09-01 11:01:12,341 INFO L131 PetriNetUnfolder]: For 536/536 co-relation queries the response was YES. [2023-09-01 11:01:12,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:12,342 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:12,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:12,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:12,342 INFO L85 PathProgramCache]: Analyzing trace with hash -624534274, now seen corresponding path program 1 times [2023-09-01 11:01:12,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:12,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022528582] [2023-09-01 11:01:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:12,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:12,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:12,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:12,387 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:12,387 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:12,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 11:01:12,388 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:12,389 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:12,389 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:12,389 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 11:01:12,423 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 11:01:12,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 701 places, 849 transitions, 1926 flow [2023-09-01 11:01:41,671 INFO L130 PetriNetUnfolder]: 24797/79035 cut-off events. [2023-09-01 11:01:41,672 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:01:45,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103726 conditions, 79035 events. 24797/79035 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 978034 event pairs, 16398 based on Foata normal form. 0/70609 useless extension candidates. Maximal degree in co-relation 50343. Up to 24576 conditions per place. [2023-09-01 11:01:45,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 701 places, 849 transitions, 1926 flow [2023-09-01 11:01:47,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 701 places, 849 transitions, 1926 flow [2023-09-01 11:01:47,800 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:47,800 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 701 places, 849 transitions, 1926 flow [2023-09-01 11:01:47,800 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 701 places, 849 transitions, 1926 flow [2023-09-01 11:01:47,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 701 places, 849 transitions, 1926 flow [2023-09-01 11:02:15,959 INFO L130 PetriNetUnfolder]: 24797/79035 cut-off events. [2023-09-01 11:02:15,960 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:02:21,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103726 conditions, 79035 events. 24797/79035 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 978034 event pairs, 16398 based on Foata normal form. 0/70609 useless extension candidates. Maximal degree in co-relation 50343. Up to 24576 conditions per place. [2023-09-01 11:02:29,335 INFO L119 LiptonReduction]: Number of co-enabled transitions 601896 [2023-09-01 11:02:34,652 INFO L134 LiptonReduction]: Checked pairs total: 1985597 [2023-09-01 11:02:34,652 INFO L136 LiptonReduction]: Total number of compositions: 507 [2023-09-01 11:02:34,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:02:34,653 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;@48ef112b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:02:34,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:02:34,820 INFO L130 PetriNetUnfolder]: 415/1273 cut-off events. [2023-09-01 11:02:34,820 INFO L131 PetriNetUnfolder]: For 771/771 co-relation queries the response was YES. [2023-09-01 11:02:34,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:02:34,821 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:02:34,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:02:34,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:02:34,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1900692996, now seen corresponding path program 1 times [2023-09-01 11:02:34,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:02:34,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080715134] [2023-09-01 11:02:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:02:34,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:02:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:34,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:02:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:34,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:02:34,855 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:02:34,855 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:02:34,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 11:02:34,856 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:02:34,856 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:02:34,856 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:02:34,856 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 11:02:34,892 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 11:02:34,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 753 places, 913 transitions, 2086 flow [2023-09-01 11:03:43,477 INFO L130 PetriNetUnfolder]: 53487/161051 cut-off events. [2023-09-01 11:03:43,478 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:03:55,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214430 conditions, 161051 events. 53487/161051 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2652. Compared 2154409 event pairs, 36879 based on Foata normal form. 0/144414 useless extension candidates. Maximal degree in co-relation 103700. Up to 53248 conditions per place. [2023-09-01 11:03:55,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 753 places, 913 transitions, 2086 flow [2023-09-01 11:04:03,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 753 places, 913 transitions, 2086 flow [2023-09-01 11:04:03,025 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:03,025 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 753 places, 913 transitions, 2086 flow [2023-09-01 11:04:03,025 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 753 places, 913 transitions, 2086 flow [2023-09-01 11:04:03,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 753 places, 913 transitions, 2086 flow