./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:34:09,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:34:09,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:34:09,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:34:09,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:34:09,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:34:09,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:34:09,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:34:09,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:34:09,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:34:09,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:34:09,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:34:09,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:34:09,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:34:09,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:34:09,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:34:09,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:34:09,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:34:09,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:34:09,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:34:09,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:34:09,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:34:09,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:34:09,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:34:09,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:34:09,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:34:09,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:34:09,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:34:09,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:34:09,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:34:09,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:34:09,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:34:09,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:34:09,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:34:09,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:34:09,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:34:09,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:34:09,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:34:09,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:34:09,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:34:09,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:34:09,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:34:09,940 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:34:09,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:34:09,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:34:09,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:34:09,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:34:09,942 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:34:09,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:34:09,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:34:09,943 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:34:09,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:34:09,943 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:34:09,944 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:34:09,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:34:09,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:34:09,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:34:09,944 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:34:09,944 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:34:09,944 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:34:09,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:34:09,945 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:34:09,945 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:34:09,945 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:34:09,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:34:09,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:34:09,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:34:09,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:34:09,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:34:09,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:34:09,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:34:09,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:34:09,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:34:09,947 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:34:09,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:34:09,947 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:34:09,947 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:34:10,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:34:10,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:34:10,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:34:10,184 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:34:10,186 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:34:10,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-09-01 00:34:11,165 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:34:11,417 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:34:11,418 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-09-01 00:34:11,446 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f289b2145/b6473c8c0a18465cb9bea83c58898109/FLAG6591ac082 [2023-09-01 00:34:11,725 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f289b2145/b6473c8c0a18465cb9bea83c58898109 [2023-09-01 00:34:11,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:34:11,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:34:11,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:34:11,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:34:11,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:34:11,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:34:11" (1/1) ... [2023-09-01 00:34:11,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700c3ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:11, skipping insertion in model container [2023-09-01 00:34:11,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:34:11" (1/1) ... [2023-09-01 00:34:11,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:34:11,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:34:11,990 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_19-callback_racing.i[30212,30225] [2023-09-01 00:34:12,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:34:12,042 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:34:12,075 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_19-callback_racing.i[30212,30225] [2023-09-01 00:34:12,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:34:12,122 WARN L667 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 00:34:12,127 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:34:12,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12 WrapperNode [2023-09-01 00:34:12,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:34:12,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:34:12,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:34:12,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:34:12,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12" (1/1) ... [2023-09-01 00:34:12,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12" (1/1) ... [2023-09-01 00:34:12,198 INFO L138 Inliner]: procedures = 173, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-09-01 00:34:12,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:34:12,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:34:12,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:34:12,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:34:12,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12" (1/1) ... [2023-09-01 00:34:12,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12" (1/1) ... [2023-09-01 00:34:12,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12" (1/1) ... [2023-09-01 00:34:12,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12" (1/1) ... [2023-09-01 00:34:12,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12" (1/1) ... [2023-09-01 00:34:12,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12" (1/1) ... [2023-09-01 00:34:12,246 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12" (1/1) ... [2023-09-01 00:34:12,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12" (1/1) ... [2023-09-01 00:34:12,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:34:12,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:34:12,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:34:12,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:34:12,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12" (1/1) ... [2023-09-01 00:34:12,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:34:12,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:34:12,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 00:34:12,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 00:34:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:34:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:34:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:34:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:34:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:34:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:34:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:34:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:34:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:34:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:34:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:34:12,347 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:34:12,432 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:34:12,433 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:34:12,635 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:34:12,640 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:34:12,640 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-09-01 00:34:12,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:34:12 BoogieIcfgContainer [2023-09-01 00:34:12,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:34:12,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:34:12,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:34:12,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:34:12,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:34:11" (1/3) ... [2023-09-01 00:34:12,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8f7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:34:12, skipping insertion in model container [2023-09-01 00:34:12,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:34:12" (2/3) ... [2023-09-01 00:34:12,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8f7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:34:12, skipping insertion in model container [2023-09-01 00:34:12,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:34:12" (3/3) ... [2023-09-01 00:34:12,647 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2023-09-01 00:34:12,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:34:12,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 00:34:12,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:34:12,698 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:34:12,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 143 transitions, 294 flow [2023-09-01 00:34:12,770 INFO L130 PetriNetUnfolder]: 26/220 cut-off events. [2023-09-01 00:34:12,771 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:34:12,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 220 events. 26/220 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 623 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 111. Up to 6 conditions per place. [2023-09-01 00:34:12,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 143 transitions, 294 flow [2023-09-01 00:34:12,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 138 transitions, 281 flow [2023-09-01 00:34:12,779 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:12,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 138 transitions, 281 flow [2023-09-01 00:34:12,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 138 transitions, 281 flow [2023-09-01 00:34:12,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 138 transitions, 281 flow [2023-09-01 00:34:12,854 INFO L130 PetriNetUnfolder]: 25/215 cut-off events. [2023-09-01 00:34:12,854 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:34:12,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 215 events. 25/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 579 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 111. Up to 6 conditions per place. [2023-09-01 00:34:12,856 INFO L119 LiptonReduction]: Number of co-enabled transitions 3320 [2023-09-01 00:34:15,713 INFO L134 LiptonReduction]: Checked pairs total: 4935 [2023-09-01 00:34:15,713 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-09-01 00:34:15,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:15,727 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:15,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:15,731 INFO L130 PetriNetUnfolder]: 4/29 cut-off events. [2023-09-01 00:34:15,732 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:34:15,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:15,732 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:34:15,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:15,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:15,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1402841900, now seen corresponding path program 1 times [2023-09-01 00:34:15,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:15,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741263418] [2023-09-01 00:34:15,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:15,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:15,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:15,897 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:15,898 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:15,899 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:15,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:34:15,902 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:15,908 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:15,909 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:15,909 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:34:15,938 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:34:15,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2023-09-01 00:34:16,006 INFO L130 PetriNetUnfolder]: 43/348 cut-off events. [2023-09-01 00:34:16,007 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:34:16,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 348 events. 43/348 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1263 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 222. Up to 9 conditions per place. [2023-09-01 00:34:16,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 165 transitions, 348 flow [2023-09-01 00:34:16,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 165 transitions, 348 flow [2023-09-01 00:34:16,013 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:16,013 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 165 transitions, 348 flow [2023-09-01 00:34:16,013 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 165 transitions, 348 flow [2023-09-01 00:34:16,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2023-09-01 00:34:16,042 INFO L130 PetriNetUnfolder]: 43/348 cut-off events. [2023-09-01 00:34:16,042 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:34:16,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 348 events. 43/348 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1263 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 222. Up to 9 conditions per place. [2023-09-01 00:34:16,052 INFO L119 LiptonReduction]: Number of co-enabled transitions 7880 [2023-09-01 00:34:18,494 INFO L134 LiptonReduction]: Checked pairs total: 12915 [2023-09-01 00:34:18,494 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-09-01 00:34:18,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:18,496 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:18,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:18,504 INFO L130 PetriNetUnfolder]: 18/76 cut-off events. [2023-09-01 00:34:18,505 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:34:18,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:18,505 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:34:18,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:18,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:18,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2082342013, now seen corresponding path program 1 times [2023-09-01 00:34:18,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:18,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119912582] [2023-09-01 00:34:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:18,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:18,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:18,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:18,579 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:18,580 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:18,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:34:18,581 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:18,581 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:18,583 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:18,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:34:18,597 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:34:18,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 187 transitions, 404 flow [2023-09-01 00:34:18,635 INFO L130 PetriNetUnfolder]: 65/517 cut-off events. [2023-09-01 00:34:18,636 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:34:18,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 517 events. 65/517 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2131 event pairs, 1 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 356. Up to 16 conditions per place. [2023-09-01 00:34:18,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 187 transitions, 404 flow [2023-09-01 00:34:18,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 187 transitions, 404 flow [2023-09-01 00:34:18,640 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:18,643 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 187 transitions, 404 flow [2023-09-01 00:34:18,643 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 187 transitions, 404 flow [2023-09-01 00:34:18,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 187 transitions, 404 flow [2023-09-01 00:34:18,684 INFO L130 PetriNetUnfolder]: 65/517 cut-off events. [2023-09-01 00:34:18,684 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:34:18,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 517 events. 65/517 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2131 event pairs, 1 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 356. Up to 16 conditions per place. [2023-09-01 00:34:18,694 INFO L119 LiptonReduction]: Number of co-enabled transitions 13200 [2023-09-01 00:34:21,465 INFO L134 LiptonReduction]: Checked pairs total: 22152 [2023-09-01 00:34:21,465 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-09-01 00:34:21,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:21,468 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:21,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:21,475 INFO L130 PetriNetUnfolder]: 31/121 cut-off events. [2023-09-01 00:34:21,475 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:34:21,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:21,475 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:34:21,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:21,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:21,476 INFO L85 PathProgramCache]: Analyzing trace with hash 321336208, now seen corresponding path program 1 times [2023-09-01 00:34:21,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:21,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75745044] [2023-09-01 00:34:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:21,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:21,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:21,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:21,507 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:21,507 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:21,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:34:21,508 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:21,508 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:21,508 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:21,508 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:34:21,519 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:34:21,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 209 transitions, 462 flow [2023-09-01 00:34:21,569 INFO L130 PetriNetUnfolder]: 99/770 cut-off events. [2023-09-01 00:34:21,569 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:34:21,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 770 events. 99/770 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3551 event pairs, 6 based on Foata normal form. 0/609 useless extension candidates. Maximal degree in co-relation 537. Up to 32 conditions per place. [2023-09-01 00:34:21,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 209 transitions, 462 flow [2023-09-01 00:34:21,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 209 transitions, 462 flow [2023-09-01 00:34:21,590 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:21,590 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 209 transitions, 462 flow [2023-09-01 00:34:21,591 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 209 transitions, 462 flow [2023-09-01 00:34:21,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 209 transitions, 462 flow [2023-09-01 00:34:21,641 INFO L130 PetriNetUnfolder]: 99/770 cut-off events. [2023-09-01 00:34:21,641 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:34:21,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 770 events. 99/770 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3551 event pairs, 6 based on Foata normal form. 0/609 useless extension candidates. Maximal degree in co-relation 537. Up to 32 conditions per place. [2023-09-01 00:34:21,654 INFO L119 LiptonReduction]: Number of co-enabled transitions 19440 [2023-09-01 00:34:24,382 INFO L134 LiptonReduction]: Checked pairs total: 35327 [2023-09-01 00:34:24,382 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-09-01 00:34:24,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:24,384 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:24,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:24,391 INFO L130 PetriNetUnfolder]: 44/173 cut-off events. [2023-09-01 00:34:24,391 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 00:34:24,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:24,392 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:24,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:24,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:24,392 INFO L85 PathProgramCache]: Analyzing trace with hash 731991025, now seen corresponding path program 1 times [2023-09-01 00:34:24,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:24,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441373831] [2023-09-01 00:34:24,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:24,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:24,429 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:24,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:24,443 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:24,443 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:24,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:34:24,443 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:24,444 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:24,444 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:24,444 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:34:24,456 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:34:24,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 231 transitions, 522 flow [2023-09-01 00:34:24,550 INFO L130 PetriNetUnfolder]: 161/1195 cut-off events. [2023-09-01 00:34:24,551 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:34:24,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1306 conditions, 1195 events. 161/1195 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6372 event pairs, 23 based on Foata normal form. 0/937 useless extension candidates. Maximal degree in co-relation 815. Up to 80 conditions per place. [2023-09-01 00:34:24,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 231 transitions, 522 flow [2023-09-01 00:34:24,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 231 transitions, 522 flow [2023-09-01 00:34:24,566 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:24,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 231 transitions, 522 flow [2023-09-01 00:34:24,567 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 231 transitions, 522 flow [2023-09-01 00:34:24,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 231 transitions, 522 flow [2023-09-01 00:34:24,656 INFO L130 PetriNetUnfolder]: 161/1195 cut-off events. [2023-09-01 00:34:24,657 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:34:24,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1306 conditions, 1195 events. 161/1195 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6372 event pairs, 23 based on Foata normal form. 0/937 useless extension candidates. Maximal degree in co-relation 815. Up to 80 conditions per place. [2023-09-01 00:34:24,680 INFO L119 LiptonReduction]: Number of co-enabled transitions 26600 [2023-09-01 00:34:27,771 INFO L134 LiptonReduction]: Checked pairs total: 48723 [2023-09-01 00:34:27,772 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-09-01 00:34:27,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:27,773 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:27,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:27,791 INFO L130 PetriNetUnfolder]: 56/229 cut-off events. [2023-09-01 00:34:27,791 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 00:34:27,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:27,792 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:27,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:27,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:27,792 INFO L85 PathProgramCache]: Analyzing trace with hash -897415049, now seen corresponding path program 1 times [2023-09-01 00:34:27,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:27,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003880245] [2023-09-01 00:34:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:27,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:27,845 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:27,860 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:27,860 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:27,860 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:27,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:34:27,864 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:27,865 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:27,865 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:27,865 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:34:27,883 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:34:27,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 253 transitions, 584 flow [2023-09-01 00:34:28,096 INFO L130 PetriNetUnfolder]: 287/1972 cut-off events. [2023-09-01 00:34:28,096 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:34:28,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 1972 events. 287/1972 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12308 event pairs, 72 based on Foata normal form. 0/1537 useless extension candidates. Maximal degree in co-relation 1294. Up to 192 conditions per place. [2023-09-01 00:34:28,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 253 transitions, 584 flow [2023-09-01 00:34:28,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 253 transitions, 584 flow [2023-09-01 00:34:28,117 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:28,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 253 transitions, 584 flow [2023-09-01 00:34:28,118 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 253 transitions, 584 flow [2023-09-01 00:34:28,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 253 transitions, 584 flow [2023-09-01 00:34:28,330 INFO L130 PetriNetUnfolder]: 287/1972 cut-off events. [2023-09-01 00:34:28,330 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:34:28,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 1972 events. 287/1972 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12308 event pairs, 72 based on Foata normal form. 0/1537 useless extension candidates. Maximal degree in co-relation 1294. Up to 192 conditions per place. [2023-09-01 00:34:28,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 34680 [2023-09-01 00:34:31,488 INFO L134 LiptonReduction]: Checked pairs total: 65640 [2023-09-01 00:34:31,488 INFO L136 LiptonReduction]: Total number of compositions: 213 [2023-09-01 00:34:31,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:31,489 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:31,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:31,519 INFO L130 PetriNetUnfolder]: 81/319 cut-off events. [2023-09-01 00:34:31,520 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 00:34:31,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:31,520 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:31,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:31,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1038269008, now seen corresponding path program 1 times [2023-09-01 00:34:31,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:31,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310814744] [2023-09-01 00:34:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:31,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:31,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:31,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:31,595 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:31,595 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:31,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:34:31,596 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:31,596 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:31,598 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:31,598 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:34:31,627 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:34:31,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 275 transitions, 648 flow [2023-09-01 00:34:31,988 INFO L130 PetriNetUnfolder]: 557/3469 cut-off events. [2023-09-01 00:34:31,988 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:34:32,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3967 conditions, 3469 events. 557/3469 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 25769 event pairs, 201 based on Foata normal form. 0/2697 useless extension candidates. Maximal degree in co-relation 2190. Up to 448 conditions per place. [2023-09-01 00:34:32,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 275 transitions, 648 flow [2023-09-01 00:34:32,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 275 transitions, 648 flow [2023-09-01 00:34:32,041 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:32,041 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 275 transitions, 648 flow [2023-09-01 00:34:32,041 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 275 transitions, 648 flow [2023-09-01 00:34:32,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 275 transitions, 648 flow [2023-09-01 00:34:32,418 INFO L130 PetriNetUnfolder]: 557/3469 cut-off events. [2023-09-01 00:34:32,418 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:34:32,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3967 conditions, 3469 events. 557/3469 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 25769 event pairs, 201 based on Foata normal form. 0/2697 useless extension candidates. Maximal degree in co-relation 2190. Up to 448 conditions per place. [2023-09-01 00:34:32,507 INFO L119 LiptonReduction]: Number of co-enabled transitions 43680 [2023-09-01 00:34:35,044 INFO L134 LiptonReduction]: Checked pairs total: 85697 [2023-09-01 00:34:35,045 INFO L136 LiptonReduction]: Total number of compositions: 232 [2023-09-01 00:34:35,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:35,054 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:35,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:35,117 INFO L130 PetriNetUnfolder]: 102/415 cut-off events. [2023-09-01 00:34:35,117 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 00:34:35,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:35,117 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:35,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:35,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:35,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1598708471, now seen corresponding path program 1 times [2023-09-01 00:34:35,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:35,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410376477] [2023-09-01 00:34:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:35,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:35,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:35,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:35,155 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:35,156 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:35,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:34:35,156 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:35,156 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:35,156 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:35,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:34:35,173 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:34:35,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 297 transitions, 714 flow [2023-09-01 00:34:35,989 INFO L130 PetriNetUnfolder]: 1147/6438 cut-off events. [2023-09-01 00:34:35,989 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:34:36,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7523 conditions, 6438 events. 1147/6438 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 56969 event pairs, 522 based on Foata normal form. 0/5009 useless extension candidates. Maximal degree in co-relation 3951. Up to 1024 conditions per place. [2023-09-01 00:34:36,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 297 transitions, 714 flow [2023-09-01 00:34:36,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 297 transitions, 714 flow [2023-09-01 00:34:36,066 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:36,066 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 297 transitions, 714 flow [2023-09-01 00:34:36,066 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 297 transitions, 714 flow [2023-09-01 00:34:36,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 297 transitions, 714 flow [2023-09-01 00:34:36,827 INFO L130 PetriNetUnfolder]: 1147/6438 cut-off events. [2023-09-01 00:34:36,827 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:34:36,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7523 conditions, 6438 events. 1147/6438 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 56969 event pairs, 522 based on Foata normal form. 0/5009 useless extension candidates. Maximal degree in co-relation 3951. Up to 1024 conditions per place. [2023-09-01 00:34:37,071 INFO L119 LiptonReduction]: Number of co-enabled transitions 53600 [2023-09-01 00:34:40,792 INFO L134 LiptonReduction]: Checked pairs total: 104523 [2023-09-01 00:34:40,792 INFO L136 LiptonReduction]: Total number of compositions: 255 [2023-09-01 00:34:40,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:40,793 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:40,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:40,831 INFO L130 PetriNetUnfolder]: 131/546 cut-off events. [2023-09-01 00:34:40,831 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 00:34:40,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:40,832 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:40,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:40,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:40,832 INFO L85 PathProgramCache]: Analyzing trace with hash 647678580, now seen corresponding path program 1 times [2023-09-01 00:34:40,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:40,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556019008] [2023-09-01 00:34:40,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:40,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:40,861 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:40,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:40,890 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:40,891 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:40,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:34:40,891 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:40,891 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:40,891 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:40,891 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:34:40,914 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:34:40,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 319 transitions, 782 flow [2023-09-01 00:34:42,570 INFO L130 PetriNetUnfolder]: 2441/12415 cut-off events. [2023-09-01 00:34:42,570 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:34:42,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14792 conditions, 12415 events. 2441/12415 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 126049 event pairs, 1291 based on Foata normal form. 0/9689 useless extension candidates. Maximal degree in co-relation 7505. Up to 2304 conditions per place. [2023-09-01 00:34:42,682 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 319 transitions, 782 flow [2023-09-01 00:34:42,733 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 319 transitions, 782 flow [2023-09-01 00:34:42,733 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:42,733 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 291 places, 319 transitions, 782 flow [2023-09-01 00:34:42,733 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 291 places, 319 transitions, 782 flow [2023-09-01 00:34:42,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 319 transitions, 782 flow [2023-09-01 00:34:44,514 INFO L130 PetriNetUnfolder]: 2441/12415 cut-off events. [2023-09-01 00:34:44,514 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:34:44,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14792 conditions, 12415 events. 2441/12415 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 126049 event pairs, 1291 based on Foata normal form. 0/9689 useless extension candidates. Maximal degree in co-relation 7505. Up to 2304 conditions per place. [2023-09-01 00:34:44,919 INFO L119 LiptonReduction]: Number of co-enabled transitions 64440 [2023-09-01 00:34:47,594 INFO L134 LiptonReduction]: Checked pairs total: 127457 [2023-09-01 00:34:47,595 INFO L136 LiptonReduction]: Total number of compositions: 273 [2023-09-01 00:34:47,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:47,596 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:47,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:47,632 INFO L130 PetriNetUnfolder]: 176/738 cut-off events. [2023-09-01 00:34:47,633 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 00:34:47,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:47,633 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:47,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:47,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:47,633 INFO L85 PathProgramCache]: Analyzing trace with hash 524896475, now seen corresponding path program 1 times [2023-09-01 00:34:47,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:47,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847804867] [2023-09-01 00:34:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:47,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:47,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:47,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:47,679 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:47,679 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:47,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:34:47,679 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:47,680 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:47,680 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:47,680 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:34:47,698 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:34:47,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 341 transitions, 852 flow [2023-09-01 00:34:51,548 INFO L130 PetriNetUnfolder]: 5271/24536 cut-off events. [2023-09-01 00:34:51,548 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:34:51,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29742 conditions, 24536 events. 5271/24536 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 282455 event pairs, 3084 based on Foata normal form. 0/19233 useless extension candidates. Maximal degree in co-relation 14772. Up to 5120 conditions per place. [2023-09-01 00:34:51,972 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 341 transitions, 852 flow [2023-09-01 00:34:52,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 341 transitions, 852 flow [2023-09-01 00:34:52,084 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:52,084 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 311 places, 341 transitions, 852 flow [2023-09-01 00:34:52,084 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 311 places, 341 transitions, 852 flow [2023-09-01 00:34:52,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 341 transitions, 852 flow [2023-09-01 00:34:55,903 INFO L130 PetriNetUnfolder]: 5271/24536 cut-off events. [2023-09-01 00:34:55,905 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:34:56,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29742 conditions, 24536 events. 5271/24536 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 282455 event pairs, 3084 based on Foata normal form. 0/19233 useless extension candidates. Maximal degree in co-relation 14772. Up to 5120 conditions per place. [2023-09-01 00:34:56,911 INFO L119 LiptonReduction]: Number of co-enabled transitions 76200 [2023-09-01 00:34:59,819 INFO L134 LiptonReduction]: Checked pairs total: 172876 [2023-09-01 00:34:59,820 INFO L136 LiptonReduction]: Total number of compositions: 290 [2023-09-01 00:34:59,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:59,822 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:59,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:59,900 INFO L130 PetriNetUnfolder]: 258/1045 cut-off events. [2023-09-01 00:34:59,901 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 00:34:59,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:59,901 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:59,901 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:59,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:59,902 INFO L85 PathProgramCache]: Analyzing trace with hash 435687295, now seen corresponding path program 1 times [2023-09-01 00:34:59,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:59,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141272861] [2023-09-01 00:34:59,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:59,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:59,919 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:59,934 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:59,934 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:59,934 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:59,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:34:59,934 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:59,935 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:59,935 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:59,935 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:34:59,957 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:34:59,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 363 transitions, 924 flow [2023-09-01 00:35:08,017 INFO L130 PetriNetUnfolder]: 11429/49201 cut-off events. [2023-09-01 00:35:08,017 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:35:08,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60565 conditions, 49201 events. 11429/49201 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 628820 event pairs, 7181 based on Foata normal form. 0/38761 useless extension candidates. Maximal degree in co-relation 29720. Up to 11264 conditions per place. [2023-09-01 00:35:08,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 363 transitions, 924 flow [2023-09-01 00:35:08,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 363 transitions, 924 flow [2023-09-01 00:35:08,970 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:35:08,970 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 363 transitions, 924 flow [2023-09-01 00:35:08,970 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 363 transitions, 924 flow [2023-09-01 00:35:08,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 363 transitions, 924 flow [2023-09-01 00:35:17,205 INFO L130 PetriNetUnfolder]: 11429/49201 cut-off events. [2023-09-01 00:35:17,206 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:35:18,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60565 conditions, 49201 events. 11429/49201 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 628820 event pairs, 7181 based on Foata normal form. 0/38761 useless extension candidates. Maximal degree in co-relation 29720. Up to 11264 conditions per place. [2023-09-01 00:35:21,128 INFO L119 LiptonReduction]: Number of co-enabled transitions 88880 [2023-09-01 00:35:24,770 INFO L134 LiptonReduction]: Checked pairs total: 186091 [2023-09-01 00:35:24,770 INFO L136 LiptonReduction]: Total number of compositions: 306 [2023-09-01 00:35:24,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:35:24,772 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:35:24,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:35:24,893 INFO L130 PetriNetUnfolder]: 385/1497 cut-off events. [2023-09-01 00:35:24,893 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 00:35:24,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:35:24,893 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:35:24,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:35:24,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:35:24,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1012911993, now seen corresponding path program 1 times [2023-09-01 00:35:24,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:35:24,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085324625] [2023-09-01 00:35:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:35:24,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:35:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:24,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:35:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:24,971 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:35:24,971 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:35:24,972 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:35:24,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:35:24,973 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:35:24,974 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:35:24,974 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:35:24,974 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:35:25,000 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:35:25,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 385 transitions, 998 flow [2023-09-01 00:35:43,046 INFO L130 PetriNetUnfolder]: 24755/99466 cut-off events. [2023-09-01 00:35:43,047 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:35:45,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124157 conditions, 99466 events. 24755/99466 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2195. Compared 1388875 event pairs, 16398 based on Foata normal form. 0/78769 useless extension candidates. Maximal degree in co-relation 60541. Up to 24576 conditions per place. [2023-09-01 00:35:45,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 385 transitions, 998 flow [2023-09-01 00:35:46,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 385 transitions, 998 flow [2023-09-01 00:35:46,538 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:35:46,538 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 385 transitions, 998 flow [2023-09-01 00:35:46,538 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 385 transitions, 998 flow [2023-09-01 00:35:46,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 385 transitions, 998 flow [2023-09-01 00:36:04,491 INFO L130 PetriNetUnfolder]: 24755/99466 cut-off events. [2023-09-01 00:36:04,491 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:36:07,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124157 conditions, 99466 events. 24755/99466 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2195. Compared 1388875 event pairs, 16398 based on Foata normal form. 0/78769 useless extension candidates. Maximal degree in co-relation 60541. Up to 24576 conditions per place. [2023-09-01 00:36:11,069 INFO L119 LiptonReduction]: Number of co-enabled transitions 102480 [2023-09-01 00:36:14,558 INFO L134 LiptonReduction]: Checked pairs total: 233003 [2023-09-01 00:36:14,558 INFO L136 LiptonReduction]: Total number of compositions: 330 [2023-09-01 00:36:14,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:14,560 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:14,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:14,705 INFO L130 PetriNetUnfolder]: 602/2204 cut-off events. [2023-09-01 00:36:14,705 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 00:36:14,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:14,706 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:36:14,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:14,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:14,706 INFO L85 PathProgramCache]: Analyzing trace with hash -400193347, now seen corresponding path program 1 times [2023-09-01 00:36:14,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:14,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028110018] [2023-09-01 00:36:14,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:14,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:14,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:14,739 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:14,739 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:14,739 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:14,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:36:14,740 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:14,740 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:14,740 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:14,740 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:36:14,760 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:36:14,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 371 places, 407 transitions, 1074 flow [2023-09-01 00:36:53,702 INFO L130 PetriNetUnfolder]: 53441/201955 cut-off events. [2023-09-01 00:36:53,702 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:37:01,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255334 conditions, 201955 events. 53441/201955 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4206. Compared 3078494 event pairs, 36879 based on Foata normal form. 0/160761 useless extension candidates. Maximal degree in co-relation 124131. Up to 53248 conditions per place. [2023-09-01 00:37:01,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 407 transitions, 1074 flow [2023-09-01 00:37:03,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 371 places, 407 transitions, 1074 flow [2023-09-01 00:37:03,902 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:37:03,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 371 places, 407 transitions, 1074 flow [2023-09-01 00:37:03,903 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 371 places, 407 transitions, 1074 flow [2023-09-01 00:37:03,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 371 places, 407 transitions, 1074 flow [2023-09-01 00:37:43,815 INFO L130 PetriNetUnfolder]: 53441/201955 cut-off events. [2023-09-01 00:37:43,815 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:37:51,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255334 conditions, 201955 events. 53441/201955 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4206. Compared 3078494 event pairs, 36879 based on Foata normal form. 0/160761 useless extension candidates. Maximal degree in co-relation 124131. Up to 53248 conditions per place. [2023-09-01 00:38:05,815 INFO L119 LiptonReduction]: Number of co-enabled transitions 117000 [2023-09-01 00:38:08,940 INFO L134 LiptonReduction]: Checked pairs total: 251826 [2023-09-01 00:38:08,940 INFO L136 LiptonReduction]: Total number of compositions: 341 [2023-09-01 00:38:08,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:08,945 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1e51b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:08,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:09,184 INFO L130 PetriNetUnfolder]: 952/3280 cut-off events. [2023-09-01 00:38:09,185 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 00:38:09,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:09,185 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:38:09,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:09,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:09,185 INFO L85 PathProgramCache]: Analyzing trace with hash -540689395, now seen corresponding path program 1 times [2023-09-01 00:38:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:09,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339170791] [2023-09-01 00:38:09,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:09,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:09,206 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:09,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:09,224 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:09,224 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:09,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 00:38:09,224 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:09,225 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:09,225 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:09,225 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 00:38:09,251 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 00:38:09,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 429 transitions, 1152 flow