./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:51:45,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:51:45,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:51:45,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:51:45,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:51:45,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:51:45,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:51:45,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:51:45,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:51:45,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:51:45,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:51:45,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:51:45,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:51:45,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:51:45,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:51:45,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:51:45,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:51:45,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:51:45,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:51:45,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:51:45,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:51:45,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:51:45,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:51:45,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:51:45,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:51:45,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:51:45,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:51:45,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:51:45,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:51:45,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:51:45,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:51:45,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:51:45,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:51:45,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:51:45,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:51:45,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:51:45,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:51:45,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:51:45,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:51:45,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:51:45,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:51:45,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:51:45,923 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:51:45,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:51:45,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:51:45,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:51:45,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:51:45,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:51:45,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:51:45,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:51:45,927 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:51:45,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:51:45,928 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:51:45,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:51:45,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:51:45,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:51:45,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:51:45,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:51:45,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:51:45,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:51:45,930 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:51:45,930 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:51:45,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:51:45,930 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:51:45,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:51:45,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:51:45,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:51:45,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:51:45,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:51:45,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:51:45,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:51:45,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:51:45,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:51:45,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:51:45,932 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:51:45,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:51:45,933 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:51:45,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:51:45,933 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:51:45,933 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:51:46,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:51:46,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:51:46,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:51:46,269 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:51:46,270 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:51:46,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-09-01 06:51:47,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:51:47,831 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:51:47,832 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-09-01 06:51:47,848 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936d1cb14/bd391ea4935945eca0c1ca1545d5b347/FLAG68213e279 [2023-09-01 06:51:47,874 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936d1cb14/bd391ea4935945eca0c1ca1545d5b347 [2023-09-01 06:51:47,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:51:47,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:51:47,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:51:47,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:51:47,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:51:47,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:51:47" (1/1) ... [2023-09-01 06:51:47,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac54181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:47, skipping insertion in model container [2023-09-01 06:51:47,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:51:47" (1/1) ... [2023-09-01 06:51:47,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:51:47,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:51:48,265 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2023-09-01 06:51:48,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:51:48,307 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:51:48,350 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2023-09-01 06:51:48,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:51:48,395 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:51:48,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48 WrapperNode [2023-09-01 06:51:48,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:51:48,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:51:48,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:51:48,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:51:48,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48" (1/1) ... [2023-09-01 06:51:48,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48" (1/1) ... [2023-09-01 06:51:48,458 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 153 [2023-09-01 06:51:48,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:51:48,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:51:48,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:51:48,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:51:48,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48" (1/1) ... [2023-09-01 06:51:48,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48" (1/1) ... [2023-09-01 06:51:48,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48" (1/1) ... [2023-09-01 06:51:48,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48" (1/1) ... [2023-09-01 06:51:48,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48" (1/1) ... [2023-09-01 06:51:48,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48" (1/1) ... [2023-09-01 06:51:48,485 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48" (1/1) ... [2023-09-01 06:51:48,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48" (1/1) ... [2023-09-01 06:51:48,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:51:48,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:51:48,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:51:48,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:51:48,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48" (1/1) ... [2023-09-01 06:51:48,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:51:48,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:51:48,534 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 06:51:48,558 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 06:51:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:51:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:51:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:51:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:51:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:51:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:51:48,574 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:51:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:51:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:51:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:51:48,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:51:48,576 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 06:51:48,737 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:51:48,739 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:51:49,003 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:51:49,009 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:51:49,010 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-09-01 06:51:49,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:51:49 BoogieIcfgContainer [2023-09-01 06:51:49,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:51:49,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:51:49,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:51:49,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:51:49,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:51:47" (1/3) ... [2023-09-01 06:51:49,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f18b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:51:49, skipping insertion in model container [2023-09-01 06:51:49,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:51:48" (2/3) ... [2023-09-01 06:51:49,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f18b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:51:49, skipping insertion in model container [2023-09-01 06:51:49,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:51:49" (3/3) ... [2023-09-01 06:51:49,020 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-09-01 06:51:49,027 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:51:49,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:51:49,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-09-01 06:51:49,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:51:49,101 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:51:49,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 160 transitions, 328 flow [2023-09-01 06:51:49,238 INFO L130 PetriNetUnfolder]: 33/222 cut-off events. [2023-09-01 06:51:49,238 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:51:49,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 222 events. 33/222 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 755 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 123. Up to 6 conditions per place. [2023-09-01 06:51:49,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 160 transitions, 328 flow [2023-09-01 06:51:49,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 151 transitions, 307 flow [2023-09-01 06:51:49,263 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:51:49,276 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 151 transitions, 307 flow [2023-09-01 06:51:49,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 151 transitions, 307 flow [2023-09-01 06:51:49,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 151 transitions, 307 flow [2023-09-01 06:51:49,345 INFO L130 PetriNetUnfolder]: 32/213 cut-off events. [2023-09-01 06:51:49,345 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:51:49,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 213 events. 32/213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 738 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 123. Up to 6 conditions per place. [2023-09-01 06:51:49,355 INFO L119 LiptonReduction]: Number of co-enabled transitions 7488 [2023-09-01 06:51:52,057 INFO L134 LiptonReduction]: Checked pairs total: 19300 [2023-09-01 06:51:52,057 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-09-01 06:51:52,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:51:52,076 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;@5f8cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:51:52,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:51:52,082 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2023-09-01 06:51:52,082 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:51:52,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:51:52,083 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:51:52,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:51:52,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:51:52,088 INFO L85 PathProgramCache]: Analyzing trace with hash 868954748, now seen corresponding path program 1 times [2023-09-01 06:51:52,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:51:52,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782239659] [2023-09-01 06:51:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:51:52,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:51:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:51:52,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:51:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:51:52,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:51:52,329 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:51:52,330 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:51:52,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:51:52,332 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:51:52,344 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:51:52,345 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:51:52,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:51:52,381 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:51:52,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 214 transitions, 446 flow [2023-09-01 06:51:52,432 INFO L130 PetriNetUnfolder]: 57/374 cut-off events. [2023-09-01 06:51:52,432 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:51:52,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 374 events. 57/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1475 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 224. Up to 9 conditions per place. [2023-09-01 06:51:52,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 214 transitions, 446 flow [2023-09-01 06:51:52,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 214 transitions, 446 flow [2023-09-01 06:51:52,440 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:51:52,440 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 214 transitions, 446 flow [2023-09-01 06:51:52,441 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 214 transitions, 446 flow [2023-09-01 06:51:52,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 214 transitions, 446 flow [2023-09-01 06:51:52,506 INFO L130 PetriNetUnfolder]: 57/374 cut-off events. [2023-09-01 06:51:52,507 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:51:52,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 374 events. 57/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1475 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 224. Up to 9 conditions per place. [2023-09-01 06:51:52,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 22360 [2023-09-01 06:51:55,456 INFO L134 LiptonReduction]: Checked pairs total: 62950 [2023-09-01 06:51:55,456 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-09-01 06:51:55,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:51:55,459 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;@5f8cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:51:55,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:51:55,467 INFO L130 PetriNetUnfolder]: 27/115 cut-off events. [2023-09-01 06:51:55,468 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:51:55,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:51:55,468 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:51:55,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:51:55,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:51:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1069558933, now seen corresponding path program 1 times [2023-09-01 06:51:55,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:51:55,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173739321] [2023-09-01 06:51:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:51:55,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:51:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:51:55,497 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:51:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:51:55,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:51:55,518 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:51:55,519 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:51:55,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:51:55,519 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:51:55,520 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:51:55,520 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:51:55,520 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:51:55,542 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:51:55,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 268 transitions, 566 flow [2023-09-01 06:51:55,633 INFO L130 PetriNetUnfolder]: 86/565 cut-off events. [2023-09-01 06:51:55,633 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:51:55,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 565 events. 86/565 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2349 event pairs, 1 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 382. Up to 16 conditions per place. [2023-09-01 06:51:55,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 268 transitions, 566 flow [2023-09-01 06:51:55,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 268 transitions, 566 flow [2023-09-01 06:51:55,648 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:51:55,648 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 268 transitions, 566 flow [2023-09-01 06:51:55,648 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 268 transitions, 566 flow [2023-09-01 06:51:55,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 268 transitions, 566 flow [2023-09-01 06:51:55,716 INFO L130 PetriNetUnfolder]: 86/565 cut-off events. [2023-09-01 06:51:55,716 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:51:55,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 565 events. 86/565 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2349 event pairs, 1 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 382. Up to 16 conditions per place. [2023-09-01 06:51:55,747 INFO L119 LiptonReduction]: Number of co-enabled transitions 42120 [2023-09-01 06:51:58,778 INFO L134 LiptonReduction]: Checked pairs total: 126703 [2023-09-01 06:51:58,779 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-09-01 06:51:58,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:51:58,781 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;@5f8cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:51:58,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:51:58,794 INFO L130 PetriNetUnfolder]: 46/187 cut-off events. [2023-09-01 06:51:58,794 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:51:58,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:51:58,795 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:51:58,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:51:58,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:51:58,795 INFO L85 PathProgramCache]: Analyzing trace with hash -983774460, now seen corresponding path program 1 times [2023-09-01 06:51:58,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:51:58,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104024771] [2023-09-01 06:51:58,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:51:58,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:51:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:51:58,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:51:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:51:58,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:51:58,843 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:51:58,844 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:51:58,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:51:58,844 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:51:58,845 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:51:58,845 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:51:58,845 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:51:58,875 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:51:58,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 322 transitions, 688 flow [2023-09-01 06:51:58,999 INFO L130 PetriNetUnfolder]: 127/836 cut-off events. [2023-09-01 06:51:58,999 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:51:59,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 836 events. 127/836 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3765 event pairs, 6 based on Foata normal form. 0/635 useless extension candidates. Maximal degree in co-relation 585. Up to 32 conditions per place. [2023-09-01 06:51:59,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 322 transitions, 688 flow [2023-09-01 06:51:59,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 322 transitions, 688 flow [2023-09-01 06:51:59,023 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:51:59,023 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 322 transitions, 688 flow [2023-09-01 06:51:59,024 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 322 transitions, 688 flow [2023-09-01 06:51:59,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 322 transitions, 688 flow [2023-09-01 06:51:59,150 INFO L130 PetriNetUnfolder]: 127/836 cut-off events. [2023-09-01 06:51:59,150 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:51:59,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 836 events. 127/836 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3765 event pairs, 6 based on Foata normal form. 0/635 useless extension candidates. Maximal degree in co-relation 585. Up to 32 conditions per place. [2023-09-01 06:51:59,190 INFO L119 LiptonReduction]: Number of co-enabled transitions 67600 [2023-09-01 06:52:02,596 INFO L134 LiptonReduction]: Checked pairs total: 213587 [2023-09-01 06:52:02,597 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-09-01 06:52:02,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:52:02,603 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;@5f8cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:52:02,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:52:02,627 INFO L130 PetriNetUnfolder]: 67/269 cut-off events. [2023-09-01 06:52:02,627 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 06:52:02,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:52:02,628 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:52:02,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:52:02,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:52:02,630 INFO L85 PathProgramCache]: Analyzing trace with hash -435707648, now seen corresponding path program 1 times [2023-09-01 06:52:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:52:02,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640638165] [2023-09-01 06:52:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:52:02,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:52:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:02,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:52:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:02,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:52:02,729 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:52:02,729 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:52:02,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:52:02,730 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:52:02,730 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:52:02,731 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:52:02,731 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:52:02,759 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:52:02,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 376 transitions, 812 flow [2023-09-01 06:52:02,973 INFO L130 PetriNetUnfolder]: 196/1271 cut-off events. [2023-09-01 06:52:02,974 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:52:03,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 1271 events. 196/1271 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6357 event pairs, 23 based on Foata normal form. 0/975 useless extension candidates. Maximal degree in co-relation 881. Up to 80 conditions per place. [2023-09-01 06:52:03,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 376 transitions, 812 flow [2023-09-01 06:52:03,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 376 transitions, 812 flow [2023-09-01 06:52:03,024 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:52:03,024 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 376 transitions, 812 flow [2023-09-01 06:52:03,025 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 376 transitions, 812 flow [2023-09-01 06:52:03,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 376 transitions, 812 flow [2023-09-01 06:52:03,240 INFO L130 PetriNetUnfolder]: 196/1271 cut-off events. [2023-09-01 06:52:03,241 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:52:03,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 1271 events. 196/1271 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6357 event pairs, 23 based on Foata normal form. 0/975 useless extension candidates. Maximal degree in co-relation 881. Up to 80 conditions per place. [2023-09-01 06:52:03,363 INFO L119 LiptonReduction]: Number of co-enabled transitions 98800 [2023-09-01 06:52:06,907 INFO L134 LiptonReduction]: Checked pairs total: 310859 [2023-09-01 06:52:06,908 INFO L136 LiptonReduction]: Total number of compositions: 271 [2023-09-01 06:52:06,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:52:06,910 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;@5f8cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:52:06,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:52:06,944 INFO L130 PetriNetUnfolder]: 85/350 cut-off events. [2023-09-01 06:52:06,945 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-09-01 06:52:06,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:52:06,945 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:52:06,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:52:06,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:52:06,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1023833604, now seen corresponding path program 1 times [2023-09-01 06:52:06,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:52:06,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538699472] [2023-09-01 06:52:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:52:06,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:52:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:07,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:52:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:07,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:52:07,031 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:52:07,031 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:52:07,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:52:07,032 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:52:07,033 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:52:07,033 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:52:07,035 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:52:07,076 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:52:07,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 366 places, 430 transitions, 938 flow [2023-09-01 06:52:07,517 INFO L130 PetriNetUnfolder]: 329/2042 cut-off events. [2023-09-01 06:52:07,519 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:52:07,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 2042 events. 329/2042 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 12021 event pairs, 72 based on Foata normal form. 0/1587 useless extension candidates. Maximal degree in co-relation 1370. Up to 192 conditions per place. [2023-09-01 06:52:07,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 366 places, 430 transitions, 938 flow [2023-09-01 06:52:07,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 366 places, 430 transitions, 938 flow [2023-09-01 06:52:07,594 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:52:07,594 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 366 places, 430 transitions, 938 flow [2023-09-01 06:52:07,595 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 366 places, 430 transitions, 938 flow [2023-09-01 06:52:07,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 366 places, 430 transitions, 938 flow [2023-09-01 06:52:08,077 INFO L130 PetriNetUnfolder]: 329/2042 cut-off events. [2023-09-01 06:52:08,077 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:52:08,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 2042 events. 329/2042 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 12021 event pairs, 72 based on Foata normal form. 0/1587 useless extension candidates. Maximal degree in co-relation 1370. Up to 192 conditions per place. [2023-09-01 06:52:08,195 INFO L119 LiptonReduction]: Number of co-enabled transitions 135720 [2023-09-01 06:52:12,166 INFO L134 LiptonReduction]: Checked pairs total: 502796 [2023-09-01 06:52:12,166 INFO L136 LiptonReduction]: Total number of compositions: 312 [2023-09-01 06:52:12,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:52:12,168 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;@5f8cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:52:12,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:52:12,211 INFO L130 PetriNetUnfolder]: 111/452 cut-off events. [2023-09-01 06:52:12,211 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-09-01 06:52:12,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:52:12,211 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:52:12,211 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:52:12,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:52:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash -313374236, now seen corresponding path program 1 times [2023-09-01 06:52:12,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:52:12,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433311107] [2023-09-01 06:52:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:52:12,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:52:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:12,238 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:52:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:12,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:52:12,257 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:52:12,257 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:52:12,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:52:12,257 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:52:12,258 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:52:12,258 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:52:12,258 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:52:12,286 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:52:12,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 484 transitions, 1066 flow [2023-09-01 06:52:13,125 INFO L130 PetriNetUnfolder]: 606/3501 cut-off events. [2023-09-01 06:52:13,126 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:52:13,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 3501 events. 606/3501 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 24481 event pairs, 201 based on Foata normal form. 0/2759 useless extension candidates. Maximal degree in co-relation 2260. Up to 448 conditions per place. [2023-09-01 06:52:13,230 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 484 transitions, 1066 flow [2023-09-01 06:52:13,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 484 transitions, 1066 flow [2023-09-01 06:52:13,275 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:52:13,275 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 411 places, 484 transitions, 1066 flow [2023-09-01 06:52:13,275 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 411 places, 484 transitions, 1066 flow [2023-09-01 06:52:13,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 484 transitions, 1066 flow [2023-09-01 06:52:14,068 INFO L130 PetriNetUnfolder]: 606/3501 cut-off events. [2023-09-01 06:52:14,068 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:52:14,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 3501 events. 606/3501 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 24481 event pairs, 201 based on Foata normal form. 0/2759 useless extension candidates. Maximal degree in co-relation 2260. Up to 448 conditions per place. [2023-09-01 06:52:14,460 INFO L119 LiptonReduction]: Number of co-enabled transitions 178360 [2023-09-01 06:52:18,569 INFO L134 LiptonReduction]: Checked pairs total: 572142 [2023-09-01 06:52:18,569 INFO L136 LiptonReduction]: Total number of compositions: 347 [2023-09-01 06:52:18,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:52:18,572 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;@5f8cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:52:18,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:52:18,638 INFO L130 PetriNetUnfolder]: 130/549 cut-off events. [2023-09-01 06:52:18,638 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-09-01 06:52:18,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:52:18,639 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:52:18,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:52:18,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:52:18,640 INFO L85 PathProgramCache]: Analyzing trace with hash -910135319, now seen corresponding path program 1 times [2023-09-01 06:52:18,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:52:18,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084671615] [2023-09-01 06:52:18,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:52:18,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:52:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:18,662 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:52:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:18,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:52:18,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:52:18,687 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:52:18,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:52:18,688 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:52:18,689 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:52:18,689 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:52:18,689 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:52:18,728 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:52:18,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 538 transitions, 1196 flow [2023-09-01 06:52:20,060 INFO L130 PetriNetUnfolder]: 1203/6368 cut-off events. [2023-09-01 06:52:20,060 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:52:20,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7453 conditions, 6368 events. 1203/6368 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 52378 event pairs, 522 based on Foata normal form. 0/5083 useless extension candidates. Maximal degree in co-relation 3983. Up to 1024 conditions per place. [2023-09-01 06:52:20,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 456 places, 538 transitions, 1196 flow [2023-09-01 06:52:20,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 456 places, 538 transitions, 1196 flow [2023-09-01 06:52:20,496 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:52:20,496 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 456 places, 538 transitions, 1196 flow [2023-09-01 06:52:20,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 456 places, 538 transitions, 1196 flow [2023-09-01 06:52:20,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 538 transitions, 1196 flow [2023-09-01 06:52:22,025 INFO L130 PetriNetUnfolder]: 1203/6368 cut-off events. [2023-09-01 06:52:22,026 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:52:22,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7453 conditions, 6368 events. 1203/6368 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 52378 event pairs, 522 based on Foata normal form. 0/5083 useless extension candidates. Maximal degree in co-relation 3983. Up to 1024 conditions per place. [2023-09-01 06:52:22,481 INFO L119 LiptonReduction]: Number of co-enabled transitions 226720 [2023-09-01 06:52:26,596 INFO L134 LiptonReduction]: Checked pairs total: 740098 [2023-09-01 06:52:26,596 INFO L136 LiptonReduction]: Total number of compositions: 380 [2023-09-01 06:52:26,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:52:26,598 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;@5f8cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:52:26,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:52:26,660 INFO L130 PetriNetUnfolder]: 172/706 cut-off events. [2023-09-01 06:52:26,660 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2023-09-01 06:52:26,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:52:26,660 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:52:26,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:52:26,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:52:26,661 INFO L85 PathProgramCache]: Analyzing trace with hash -458305473, now seen corresponding path program 1 times [2023-09-01 06:52:26,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:52:26,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24210136] [2023-09-01 06:52:26,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:52:26,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:52:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:26,682 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:52:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:26,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:52:26,701 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:52:26,701 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:52:26,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:52:26,701 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:52:26,702 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:52:26,702 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:52:26,702 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:52:26,741 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:52:26,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 501 places, 592 transitions, 1328 flow [2023-09-01 06:52:30,029 INFO L130 PetriNetUnfolder]: 2504/12115 cut-off events. [2023-09-01 06:52:30,030 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:52:30,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14492 conditions, 12115 events. 2504/12115 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 115855 event pairs, 1291 based on Foata normal form. 0/9775 useless extension candidates. Maximal degree in co-relation 7436. Up to 2304 conditions per place. [2023-09-01 06:52:30,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 501 places, 592 transitions, 1328 flow [2023-09-01 06:52:30,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 501 places, 592 transitions, 1328 flow [2023-09-01 06:52:30,471 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:52:30,471 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 501 places, 592 transitions, 1328 flow [2023-09-01 06:52:30,471 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 501 places, 592 transitions, 1328 flow [2023-09-01 06:52:30,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 501 places, 592 transitions, 1328 flow [2023-09-01 06:52:33,572 INFO L130 PetriNetUnfolder]: 2504/12115 cut-off events. [2023-09-01 06:52:33,572 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:52:33,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14492 conditions, 12115 events. 2504/12115 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 115855 event pairs, 1291 based on Foata normal form. 0/9775 useless extension candidates. Maximal degree in co-relation 7436. Up to 2304 conditions per place. [2023-09-01 06:52:34,632 INFO L119 LiptonReduction]: Number of co-enabled transitions 280800 [2023-09-01 06:52:39,296 INFO L134 LiptonReduction]: Checked pairs total: 917648 [2023-09-01 06:52:39,297 INFO L136 LiptonReduction]: Total number of compositions: 424 [2023-09-01 06:52:39,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:52:39,299 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;@5f8cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:52:39,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:52:39,402 INFO L130 PetriNetUnfolder]: 208/865 cut-off events. [2023-09-01 06:52:39,402 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-09-01 06:52:39,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:52:39,402 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:52:39,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:52:39,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:52:39,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1157586773, now seen corresponding path program 1 times [2023-09-01 06:52:39,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:52:39,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071609952] [2023-09-01 06:52:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:52:39,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:52:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:39,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:52:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:39,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:52:39,448 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:52:39,448 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:52:39,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:52:39,449 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:52:39,449 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:52:39,449 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:52:39,450 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:52:39,491 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:52:39,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 646 transitions, 1462 flow [2023-09-01 06:52:46,510 INFO L130 PetriNetUnfolder]: 5341/23750 cut-off events. [2023-09-01 06:52:46,511 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:52:47,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28956 conditions, 23750 events. 5341/23750 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 258224 event pairs, 3084 based on Foata normal form. 0/19331 useless extension candidates. Maximal degree in co-relation 14475. Up to 5120 conditions per place. [2023-09-01 06:52:47,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 646 transitions, 1462 flow [2023-09-01 06:52:47,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 546 places, 646 transitions, 1462 flow [2023-09-01 06:52:47,758 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:52:47,758 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 546 places, 646 transitions, 1462 flow [2023-09-01 06:52:47,758 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 546 places, 646 transitions, 1462 flow [2023-09-01 06:52:47,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 646 transitions, 1462 flow [2023-09-01 06:52:54,911 INFO L130 PetriNetUnfolder]: 5341/23750 cut-off events. [2023-09-01 06:52:54,911 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:52:55,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28956 conditions, 23750 events. 5341/23750 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 258224 event pairs, 3084 based on Foata normal form. 0/19331 useless extension candidates. Maximal degree in co-relation 14475. Up to 5120 conditions per place. [2023-09-01 06:52:57,131 INFO L119 LiptonReduction]: Number of co-enabled transitions 340600 [2023-09-01 06:53:02,260 INFO L134 LiptonReduction]: Checked pairs total: 975775 [2023-09-01 06:53:02,260 INFO L136 LiptonReduction]: Total number of compositions: 463 [2023-09-01 06:53:02,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:53:02,263 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5f8cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:53:02,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:53:02,427 INFO L130 PetriNetUnfolder]: 291/1141 cut-off events. [2023-09-01 06:53:02,427 INFO L131 PetriNetUnfolder]: For 412/412 co-relation queries the response was YES. [2023-09-01 06:53:02,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:53:02,428 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:53:02,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:53:02,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:53:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1570253225, now seen corresponding path program 1 times [2023-09-01 06:53:02,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:53:02,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603190520] [2023-09-01 06:53:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:53:02,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:53:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:02,454 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:53:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:02,477 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:53:02,477 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:53:02,477 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:53:02,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:53:02,478 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:53:02,478 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:53:02,478 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:53:02,479 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:53:02,524 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:53:02,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 591 places, 700 transitions, 1598 flow [2023-09-01 06:53:18,655 INFO L130 PetriNetUnfolder]: 11506/47417 cut-off events. [2023-09-01 06:53:18,655 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:53:22,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58781 conditions, 47417 events. 11506/47417 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 582244 event pairs, 7181 based on Foata normal form. 0/38871 useless extension candidates. Maximal degree in co-relation 28939. Up to 11264 conditions per place. [2023-09-01 06:53:22,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 591 places, 700 transitions, 1598 flow [2023-09-01 06:53:23,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 591 places, 700 transitions, 1598 flow [2023-09-01 06:53:23,414 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:53:23,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 591 places, 700 transitions, 1598 flow [2023-09-01 06:53:23,414 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 591 places, 700 transitions, 1598 flow [2023-09-01 06:53:23,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 591 places, 700 transitions, 1598 flow [2023-09-01 06:53:41,174 INFO L130 PetriNetUnfolder]: 11506/47417 cut-off events. [2023-09-01 06:53:41,174 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:53:45,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58781 conditions, 47417 events. 11506/47417 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 582244 event pairs, 7181 based on Foata normal form. 0/38871 useless extension candidates. Maximal degree in co-relation 28939. Up to 11264 conditions per place. [2023-09-01 06:53:49,311 INFO L119 LiptonReduction]: Number of co-enabled transitions 406120 [2023-09-01 06:53:54,351 INFO L134 LiptonReduction]: Checked pairs total: 1154116 [2023-09-01 06:53:54,351 INFO L136 LiptonReduction]: Total number of compositions: 507 [2023-09-01 06:53:54,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:53:54,353 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;@5f8cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:53:54,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:53:54,563 INFO L130 PetriNetUnfolder]: 397/1489 cut-off events. [2023-09-01 06:53:54,563 INFO L131 PetriNetUnfolder]: For 619/619 co-relation queries the response was YES. [2023-09-01 06:53:54,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:53:54,563 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:53:54,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:53:54,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:53:54,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1343344496, now seen corresponding path program 1 times [2023-09-01 06:53:54,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:53:54,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837802679] [2023-09-01 06:53:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:53:54,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:53:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:54,606 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:53:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:54,636 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:53:54,637 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:53:54,637 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:53:54,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:53:54,637 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:53:54,638 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:53:54,638 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:53:54,638 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:53:54,685 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:53:54,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 636 places, 754 transitions, 1736 flow [2023-09-01 06:54:35,417 INFO L130 PetriNetUnfolder]: 24839/95660 cut-off events. [2023-09-01 06:54:35,417 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:54:45,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120351 conditions, 95660 events. 24839/95660 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1453. Compared 1283093 event pairs, 16398 based on Foata normal form. 0/78891 useless extension candidates. Maximal degree in co-relation 58764. Up to 24576 conditions per place. [2023-09-01 06:54:45,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 636 places, 754 transitions, 1736 flow [2023-09-01 06:54:48,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 636 places, 754 transitions, 1736 flow [2023-09-01 06:54:48,621 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:54:48,622 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 636 places, 754 transitions, 1736 flow [2023-09-01 06:54:48,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 636 places, 754 transitions, 1736 flow [2023-09-01 06:54:48,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 636 places, 754 transitions, 1736 flow [2023-09-01 06:55:27,646 INFO L130 PetriNetUnfolder]: 24839/95660 cut-off events. [2023-09-01 06:55:27,647 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:55:39,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120351 conditions, 95660 events. 24839/95660 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1453. Compared 1283093 event pairs, 16398 based on Foata normal form. 0/78891 useless extension candidates. Maximal degree in co-relation 58764. Up to 24576 conditions per place. [2023-09-01 06:55:55,707 INFO L119 LiptonReduction]: Number of co-enabled transitions 477360 [2023-09-01 06:56:01,658 INFO L134 LiptonReduction]: Checked pairs total: 1601139 [2023-09-01 06:56:01,658 INFO L136 LiptonReduction]: Total number of compositions: 531 [2023-09-01 06:56:01,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:56:01,660 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;@5f8cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:56:01,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:56:01,927 INFO L130 PetriNetUnfolder]: 559/1985 cut-off events. [2023-09-01 06:56:01,928 INFO L131 PetriNetUnfolder]: For 927/927 co-relation queries the response was YES. [2023-09-01 06:56:01,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:56:01,928 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 06:56:01,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:56:01,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:56:01,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1192751196, now seen corresponding path program 1 times [2023-09-01 06:56:01,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:56:01,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212102325] [2023-09-01 06:56:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:56:01,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:56:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:56:01,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:56:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:56:01,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:56:01,983 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:56:01,983 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:56:01,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:56:01,984 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:56:01,984 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:56:01,985 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:56:01,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:56:02,031 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:56:02,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 681 places, 808 transitions, 1876 flow [2023-09-01 06:57:43,341 INFO L130 PetriNetUnfolder]: 53532/194079 cut-off events. [2023-09-01 06:57:43,341 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:58:06,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247458 conditions, 194079 events. 53532/194079 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2870. Compared 2834551 event pairs, 36879 based on Foata normal form. 0/160895 useless extension candidates. Maximal degree in co-relation 120334. Up to 53248 conditions per place. [2023-09-01 06:58:06,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 681 places, 808 transitions, 1876 flow [2023-09-01 06:58:16,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 681 places, 808 transitions, 1876 flow [2023-09-01 06:58:16,787 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:58:16,788 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 681 places, 808 transitions, 1876 flow [2023-09-01 06:58:16,788 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 681 places, 808 transitions, 1876 flow [2023-09-01 06:58:16,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 681 places, 808 transitions, 1876 flow