./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.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_06-cond_racing1.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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --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 00:28:21,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:28:21,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:28:21,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:28:21,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:28:21,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:28:21,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:28:21,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:28:21,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:28:21,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:28:21,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:28:21,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:28:21,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:28:21,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:28:21,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:28:21,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:28:21,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:28:21,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:28:21,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:28:21,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:28:21,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:28:21,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:28:21,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:28:21,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:28:21,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:28:21,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:28:21,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:28:21,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:28:21,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:28:21,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:28:21,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:28:21,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:28:21,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:28:21,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:28:21,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:28:21,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:28:21,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:28:21,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:28:21,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:28:21,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:28:21,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:28:21,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:28:21,928 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:28:21,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:28:21,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:28:21,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:28:21,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:28:21,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:28:21,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:28:21,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:28:21,933 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:28:21,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:28:21,934 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:28:21,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:28:21,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:28:21,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:28:21,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:28:21,935 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:28:21,935 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:28:21,935 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:28:21,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:28:21,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:28:21,935 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:28:21,935 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:28:21,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:28:21,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:28:21,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:28:21,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:28:21,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:28:21,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:28:21,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:28:21,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:28:21,937 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:28:21,937 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:28:21,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:28:21,937 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:28:21,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:28:22,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:28:22,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:28:22,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:28:22,195 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:28:22,195 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:28:22,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-09-01 00:28:23,122 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:28:23,386 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:28:23,390 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-09-01 00:28:23,401 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eadf1754/fcb495758e2f40f28afd70fd844a9b29/FLAG51cc4b496 [2023-09-01 00:28:23,414 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eadf1754/fcb495758e2f40f28afd70fd844a9b29 [2023-09-01 00:28:23,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:28:23,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:28:23,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:28:23,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:28:23,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:28:23,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d104f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23, skipping insertion in model container [2023-09-01 00:28:23,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:28:23,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:28:23,718 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_06-cond_racing1.i[41322,41335] [2023-09-01 00:28:23,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:28:23,737 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:28:23,755 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_06-cond_racing1.i[41322,41335] [2023-09-01 00:28:23,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:28:23,814 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:28:23,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23 WrapperNode [2023-09-01 00:28:23,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:28:23,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:28:23,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:28:23,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:28:23,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,862 INFO L138 Inliner]: procedures = 270, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2023-09-01 00:28:23,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:28:23,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:28:23,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:28:23,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:28:23,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,896 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:28:23,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:28:23,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:28:23,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:28:23,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23" (1/1) ... [2023-09-01 00:28:23,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:28:23,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:28:23,930 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 00:28:23,937 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 00:28:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:28:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:28:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:28:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:28:23,956 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:28:23,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:28:23,956 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:28:23,956 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:28:23,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:28:23,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:28:23,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:28:23,957 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 00:28:24,104 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:28:24,105 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:28:24,300 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:28:24,305 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:28:24,308 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 00:28:24,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:28:24 BoogieIcfgContainer [2023-09-01 00:28:24,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:28:24,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:28:24,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:28:24,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:28:24,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:28:23" (1/3) ... [2023-09-01 00:28:24,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5d0128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:28:24, skipping insertion in model container [2023-09-01 00:28:24,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:28:23" (2/3) ... [2023-09-01 00:28:24,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5d0128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:28:24, skipping insertion in model container [2023-09-01 00:28:24,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:28:24" (3/3) ... [2023-09-01 00:28:24,318 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2023-09-01 00:28:24,334 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:28:24,335 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 00:28:24,335 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:28:24,398 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:28:24,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 127 transitions, 262 flow [2023-09-01 00:28:24,464 INFO L130 PetriNetUnfolder]: 23/176 cut-off events. [2023-09-01 00:28:24,464 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:28:24,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 176 events. 23/176 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 437 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 87. Up to 6 conditions per place. [2023-09-01 00:28:24,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 127 transitions, 262 flow [2023-09-01 00:28:24,471 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 122 transitions, 249 flow [2023-09-01 00:28:24,473 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:28:24,479 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 122 transitions, 249 flow [2023-09-01 00:28:24,481 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 122 transitions, 249 flow [2023-09-01 00:28:24,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 122 transitions, 249 flow [2023-09-01 00:28:24,504 INFO L130 PetriNetUnfolder]: 22/171 cut-off events. [2023-09-01 00:28:24,509 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:28:24,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 171 events. 22/171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 425 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 87. Up to 6 conditions per place. [2023-09-01 00:28:24,512 INFO L119 LiptonReduction]: Number of co-enabled transitions 3080 [2023-09-01 00:28:27,288 INFO L134 LiptonReduction]: Checked pairs total: 5240 [2023-09-01 00:28:27,288 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-09-01 00:28:27,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:28:27,302 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:28:27,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:28:27,307 INFO L130 PetriNetUnfolder]: 5/34 cut-off events. [2023-09-01 00:28:27,307 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:28:27,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:28:27,307 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:28:27,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:28:27,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:28:27,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1490315693, now seen corresponding path program 1 times [2023-09-01 00:28:27,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:28:27,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325145800] [2023-09-01 00:28:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:28:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:28:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:27,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:28:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:27,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:28:27,426 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:28:27,427 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:28:27,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:28:27,428 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:28:27,430 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:28:27,430 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:28:27,430 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:28:27,443 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:28:27,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 157 transitions, 332 flow [2023-09-01 00:28:27,482 INFO L130 PetriNetUnfolder]: 40/284 cut-off events. [2023-09-01 00:28:27,482 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:28:27,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 284 events. 40/284 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 870 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 178. Up to 9 conditions per place. [2023-09-01 00:28:27,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 157 transitions, 332 flow [2023-09-01 00:28:27,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 157 transitions, 332 flow [2023-09-01 00:28:27,488 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:28:27,488 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 157 transitions, 332 flow [2023-09-01 00:28:27,488 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 157 transitions, 332 flow [2023-09-01 00:28:27,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 157 transitions, 332 flow [2023-09-01 00:28:27,519 INFO L130 PetriNetUnfolder]: 40/284 cut-off events. [2023-09-01 00:28:27,519 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:28:27,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 284 events. 40/284 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 870 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 178. Up to 9 conditions per place. [2023-09-01 00:28:27,525 INFO L119 LiptonReduction]: Number of co-enabled transitions 8344 [2023-09-01 00:28:30,325 INFO L134 LiptonReduction]: Checked pairs total: 21444 [2023-09-01 00:28:30,326 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-09-01 00:28:30,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:28:30,328 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:28:30,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:28:30,332 INFO L130 PetriNetUnfolder]: 15/76 cut-off events. [2023-09-01 00:28:30,332 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:28:30,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:28:30,333 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:28:30,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:28:30,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:28:30,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1847708403, now seen corresponding path program 1 times [2023-09-01 00:28:30,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:28:30,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215808040] [2023-09-01 00:28:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:28:30,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:28:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:30,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:28:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:30,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:28:30,410 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:28:30,410 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:28:30,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:28:30,411 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:28:30,411 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:28:30,412 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:28:30,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:28:30,433 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:28:30,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 187 transitions, 404 flow [2023-09-01 00:28:30,468 INFO L130 PetriNetUnfolder]: 62/433 cut-off events. [2023-09-01 00:28:30,468 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:28:30,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 433 events. 62/433 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1507 event pairs, 1 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 292. Up to 16 conditions per place. [2023-09-01 00:28:30,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 187 transitions, 404 flow [2023-09-01 00:28:30,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 187 transitions, 404 flow [2023-09-01 00:28:30,473 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:28:30,473 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 187 transitions, 404 flow [2023-09-01 00:28:30,474 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 187 transitions, 404 flow [2023-09-01 00:28:30,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 187 transitions, 404 flow [2023-09-01 00:28:30,500 INFO L130 PetriNetUnfolder]: 62/433 cut-off events. [2023-09-01 00:28:30,500 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:28:30,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 433 events. 62/433 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1507 event pairs, 1 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 292. Up to 16 conditions per place. [2023-09-01 00:28:30,513 INFO L119 LiptonReduction]: Number of co-enabled transitions 15120 [2023-09-01 00:28:32,690 INFO L134 LiptonReduction]: Checked pairs total: 37198 [2023-09-01 00:28:32,690 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-09-01 00:28:32,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:28:32,692 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:28:32,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:28:32,698 INFO L130 PetriNetUnfolder]: 26/120 cut-off events. [2023-09-01 00:28:32,699 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:28:32,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:28:32,699 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:28:32,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:28:32,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:28:32,699 INFO L85 PathProgramCache]: Analyzing trace with hash 362237218, now seen corresponding path program 1 times [2023-09-01 00:28:32,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:28:32,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940840660] [2023-09-01 00:28:32,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:28:32,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:28:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:32,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:28:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:32,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:28:32,757 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:28:32,757 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:28:32,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:28:32,757 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:28:32,758 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:28:32,758 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:28:32,758 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:28:32,770 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:28:32,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 217 transitions, 478 flow [2023-09-01 00:28:32,836 INFO L130 PetriNetUnfolder]: 96/666 cut-off events. [2023-09-01 00:28:32,837 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:28:32,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 666 events. 96/666 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2721 event pairs, 6 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 453. Up to 32 conditions per place. [2023-09-01 00:28:32,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 217 transitions, 478 flow [2023-09-01 00:28:32,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 217 transitions, 478 flow [2023-09-01 00:28:32,843 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:28:32,843 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 217 transitions, 478 flow [2023-09-01 00:28:32,844 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 217 transitions, 478 flow [2023-09-01 00:28:32,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 217 transitions, 478 flow [2023-09-01 00:28:32,891 INFO L130 PetriNetUnfolder]: 96/666 cut-off events. [2023-09-01 00:28:32,891 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:28:32,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 666 events. 96/666 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2721 event pairs, 6 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 453. Up to 32 conditions per place. [2023-09-01 00:28:32,905 INFO L119 LiptonReduction]: Number of co-enabled transitions 23632 [2023-09-01 00:28:35,596 INFO L134 LiptonReduction]: Checked pairs total: 62137 [2023-09-01 00:28:35,597 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-09-01 00:28:35,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:28:35,599 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:28:35,599 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:28:35,608 INFO L130 PetriNetUnfolder]: 34/165 cut-off events. [2023-09-01 00:28:35,608 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 00:28:35,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:28:35,608 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:28:35,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:28:35,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:28:35,609 INFO L85 PathProgramCache]: Analyzing trace with hash -705209804, now seen corresponding path program 1 times [2023-09-01 00:28:35,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:28:35,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180545164] [2023-09-01 00:28:35,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:28:35,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:28:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:35,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:28:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:35,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:28:35,672 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:28:35,672 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:28:35,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:28:35,672 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:28:35,673 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:28:35,673 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:28:35,673 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:28:35,699 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:28:35,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 247 transitions, 554 flow [2023-09-01 00:28:35,791 INFO L130 PetriNetUnfolder]: 158/1071 cut-off events. [2023-09-01 00:28:35,791 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:28:35,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1182 conditions, 1071 events. 158/1071 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5281 event pairs, 23 based on Foata normal form. 0/815 useless extension candidates. Maximal degree in co-relation 711. Up to 80 conditions per place. [2023-09-01 00:28:35,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 247 transitions, 554 flow [2023-09-01 00:28:35,805 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 247 transitions, 554 flow [2023-09-01 00:28:35,806 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:28:35,806 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 247 transitions, 554 flow [2023-09-01 00:28:35,806 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 247 transitions, 554 flow [2023-09-01 00:28:35,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 247 transitions, 554 flow [2023-09-01 00:28:35,910 INFO L130 PetriNetUnfolder]: 158/1071 cut-off events. [2023-09-01 00:28:35,910 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:28:35,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1182 conditions, 1071 events. 158/1071 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5281 event pairs, 23 based on Foata normal form. 0/815 useless extension candidates. Maximal degree in co-relation 711. Up to 80 conditions per place. [2023-09-01 00:28:35,933 INFO L119 LiptonReduction]: Number of co-enabled transitions 33880 [2023-09-01 00:28:38,663 INFO L134 LiptonReduction]: Checked pairs total: 103475 [2023-09-01 00:28:38,663 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-09-01 00:28:38,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:28:38,665 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:28:38,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:28:38,678 INFO L130 PetriNetUnfolder]: 52/236 cut-off events. [2023-09-01 00:28:38,678 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 00:28:38,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:28:38,678 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:28:38,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:28:38,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:28:38,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1899283423, now seen corresponding path program 1 times [2023-09-01 00:28:38,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:28:38,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409737448] [2023-09-01 00:28:38,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:28:38,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:28:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:38,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:28:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:38,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:28:38,710 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:28:38,710 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:28:38,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:28:38,711 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:28:38,711 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:28:38,711 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:28:38,711 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:28:38,726 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:28:38,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 277 transitions, 632 flow [2023-09-01 00:28:38,945 INFO L130 PetriNetUnfolder]: 284/1828 cut-off events. [2023-09-01 00:28:38,945 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:28:38,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 1828 events. 284/1828 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10936 event pairs, 72 based on Foata normal form. 0/1395 useless extension candidates. Maximal degree in co-relation 1170. Up to 192 conditions per place. [2023-09-01 00:28:38,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 277 transitions, 632 flow [2023-09-01 00:28:38,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 277 transitions, 632 flow [2023-09-01 00:28:38,966 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:28:38,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 277 transitions, 632 flow [2023-09-01 00:28:38,966 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 277 transitions, 632 flow [2023-09-01 00:28:38,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 277 transitions, 632 flow [2023-09-01 00:28:39,137 INFO L130 PetriNetUnfolder]: 284/1828 cut-off events. [2023-09-01 00:28:39,137 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:28:39,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 1828 events. 284/1828 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10936 event pairs, 72 based on Foata normal form. 0/1395 useless extension candidates. Maximal degree in co-relation 1170. Up to 192 conditions per place. [2023-09-01 00:28:39,181 INFO L119 LiptonReduction]: Number of co-enabled transitions 45864 [2023-09-01 00:28:41,719 INFO L134 LiptonReduction]: Checked pairs total: 145887 [2023-09-01 00:28:41,720 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-09-01 00:28:41,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:28:41,721 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:28:41,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:28:41,738 INFO L130 PetriNetUnfolder]: 69/313 cut-off events. [2023-09-01 00:28:41,738 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 00:28:41,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:28:41,738 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:28:41,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:28:41,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:28:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash -6100363, now seen corresponding path program 1 times [2023-09-01 00:28:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:28:41,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110179513] [2023-09-01 00:28:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:28:41,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:28:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:41,756 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:28:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:41,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:28:41,769 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:28:41,769 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:28:41,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:28:41,770 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:28:41,770 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:28:41,770 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:28:41,770 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:28:41,811 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:28:41,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 307 transitions, 712 flow [2023-09-01 00:28:42,189 INFO L130 PetriNetUnfolder]: 554/3305 cut-off events. [2023-09-01 00:28:42,190 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:28:42,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3803 conditions, 3305 events. 554/3305 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 24415 event pairs, 201 based on Foata normal form. 0/2535 useless extension candidates. Maximal degree in co-relation 2046. Up to 448 conditions per place. [2023-09-01 00:28:42,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 307 transitions, 712 flow [2023-09-01 00:28:42,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 307 transitions, 712 flow [2023-09-01 00:28:42,231 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:28:42,231 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 307 transitions, 712 flow [2023-09-01 00:28:42,231 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 307 transitions, 712 flow [2023-09-01 00:28:42,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 307 transitions, 712 flow [2023-09-01 00:28:42,604 INFO L130 PetriNetUnfolder]: 554/3305 cut-off events. [2023-09-01 00:28:42,605 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:28:42,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3803 conditions, 3305 events. 554/3305 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 24415 event pairs, 201 based on Foata normal form. 0/2535 useless extension candidates. Maximal degree in co-relation 2046. Up to 448 conditions per place. [2023-09-01 00:28:42,698 INFO L119 LiptonReduction]: Number of co-enabled transitions 59584 [2023-09-01 00:28:45,319 INFO L134 LiptonReduction]: Checked pairs total: 173203 [2023-09-01 00:28:45,319 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-09-01 00:28:45,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:28:45,347 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:28:45,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:28:45,368 INFO L130 PetriNetUnfolder]: 91/414 cut-off events. [2023-09-01 00:28:45,368 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 00:28:45,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:28:45,369 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:28:45,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:28:45,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:28:45,369 INFO L85 PathProgramCache]: Analyzing trace with hash 959581145, now seen corresponding path program 1 times [2023-09-01 00:28:45,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:28:45,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584407179] [2023-09-01 00:28:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:28:45,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:28:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:45,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:28:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:45,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:28:45,434 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:28:45,434 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:28:45,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:28:45,434 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:28:45,435 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:28:45,435 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:28:45,435 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:28:45,460 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:28:45,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 337 transitions, 794 flow [2023-09-01 00:28:46,283 INFO L130 PetriNetUnfolder]: 1144/6254 cut-off events. [2023-09-01 00:28:46,283 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:28:46,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7339 conditions, 6254 events. 1144/6254 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 54341 event pairs, 522 based on Foata normal form. 0/4827 useless extension candidates. Maximal degree in co-relation 3787. Up to 1024 conditions per place. [2023-09-01 00:28:46,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 337 transitions, 794 flow [2023-09-01 00:28:46,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 337 transitions, 794 flow [2023-09-01 00:28:46,364 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:28:46,365 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 337 transitions, 794 flow [2023-09-01 00:28:46,365 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 337 transitions, 794 flow [2023-09-01 00:28:46,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 337 transitions, 794 flow [2023-09-01 00:28:47,235 INFO L130 PetriNetUnfolder]: 1144/6254 cut-off events. [2023-09-01 00:28:47,236 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:28:47,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7339 conditions, 6254 events. 1144/6254 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 54341 event pairs, 522 based on Foata normal form. 0/4827 useless extension candidates. Maximal degree in co-relation 3787. Up to 1024 conditions per place. [2023-09-01 00:28:47,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 75040 [2023-09-01 00:28:50,482 INFO L134 LiptonReduction]: Checked pairs total: 222260 [2023-09-01 00:28:50,483 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-09-01 00:28:50,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:28:50,484 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:28:50,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:28:50,513 INFO L130 PetriNetUnfolder]: 122/552 cut-off events. [2023-09-01 00:28:50,513 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 00:28:50,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:28:50,513 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:28:50,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:28:50,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:28:50,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1898189295, now seen corresponding path program 1 times [2023-09-01 00:28:50,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:28:50,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5667682] [2023-09-01 00:28:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:28:50,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:28:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:50,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:28:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:50,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:28:50,541 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:28:50,541 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:28:50,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:28:50,541 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:28:50,541 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:28:50,542 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:28:50,542 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:28:50,559 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:28:50,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 367 transitions, 878 flow [2023-09-01 00:28:52,428 INFO L130 PetriNetUnfolder]: 2438/12211 cut-off events. [2023-09-01 00:28:52,431 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:28:52,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14588 conditions, 12211 events. 2438/12211 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 123290 event pairs, 1291 based on Foata normal form. 0/9487 useless extension candidates. Maximal degree in co-relation 7321. Up to 2304 conditions per place. [2023-09-01 00:28:52,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 367 transitions, 878 flow [2023-09-01 00:28:52,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 367 transitions, 878 flow [2023-09-01 00:28:52,623 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:28:52,624 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 367 transitions, 878 flow [2023-09-01 00:28:52,624 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 367 transitions, 878 flow [2023-09-01 00:28:52,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 367 transitions, 878 flow [2023-09-01 00:28:54,483 INFO L130 PetriNetUnfolder]: 2438/12211 cut-off events. [2023-09-01 00:28:54,484 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:28:54,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14588 conditions, 12211 events. 2438/12211 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 123290 event pairs, 1291 based on Foata normal form. 0/9487 useless extension candidates. Maximal degree in co-relation 7321. Up to 2304 conditions per place. [2023-09-01 00:28:55,040 INFO L119 LiptonReduction]: Number of co-enabled transitions 92232 [2023-09-01 00:28:58,074 INFO L134 LiptonReduction]: Checked pairs total: 275729 [2023-09-01 00:28:58,074 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-09-01 00:28:58,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:28:58,075 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:28:58,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:28:58,131 INFO L130 PetriNetUnfolder]: 169/751 cut-off events. [2023-09-01 00:28:58,131 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 00:28:58,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:28:58,132 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:28:58,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:28:58,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:28:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2090353186, now seen corresponding path program 1 times [2023-09-01 00:28:58,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:28:58,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106481853] [2023-09-01 00:28:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:28:58,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:28:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:58,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:28:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:58,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:28:58,163 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:28:58,163 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:28:58,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:28:58,164 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:28:58,164 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:28:58,164 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:28:58,164 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:28:58,186 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:28:58,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 397 transitions, 964 flow [2023-09-01 00:29:02,283 INFO L130 PetriNetUnfolder]: 5268/24312 cut-off events. [2023-09-01 00:29:02,283 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:29:02,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29518 conditions, 24312 events. 5268/24312 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 278882 event pairs, 3084 based on Foata normal form. 0/19011 useless extension candidates. Maximal degree in co-relation 14568. Up to 5120 conditions per place. [2023-09-01 00:29:02,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 397 transitions, 964 flow [2023-09-01 00:29:02,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 397 transitions, 964 flow [2023-09-01 00:29:02,731 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:29:02,731 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 397 transitions, 964 flow [2023-09-01 00:29:02,731 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 397 transitions, 964 flow [2023-09-01 00:29:02,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 397 transitions, 964 flow [2023-09-01 00:29:06,788 INFO L130 PetriNetUnfolder]: 5268/24312 cut-off events. [2023-09-01 00:29:06,789 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:29:07,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29518 conditions, 24312 events. 5268/24312 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 278882 event pairs, 3084 based on Foata normal form. 0/19011 useless extension candidates. Maximal degree in co-relation 14568. Up to 5120 conditions per place. [2023-09-01 00:29:07,914 INFO L119 LiptonReduction]: Number of co-enabled transitions 111160 [2023-09-01 00:29:10,417 INFO L134 LiptonReduction]: Checked pairs total: 334958 [2023-09-01 00:29:10,417 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-09-01 00:29:10,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:29:10,420 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:29:10,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:29:10,482 INFO L130 PetriNetUnfolder]: 235/1029 cut-off events. [2023-09-01 00:29:10,482 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 00:29:10,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:29:10,482 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:29:10,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:29:10,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:29:10,483 INFO L85 PathProgramCache]: Analyzing trace with hash 695815369, now seen corresponding path program 1 times [2023-09-01 00:29:10,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:29:10,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320851782] [2023-09-01 00:29:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:29:10,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:29:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:10,540 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:29:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:10,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:29:10,581 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:29:10,582 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:29:10,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:29:10,582 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:29:10,582 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:29:10,582 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:29:10,582 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:29:10,600 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:29:10,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 427 transitions, 1052 flow [2023-09-01 00:29:19,869 INFO L130 PetriNetUnfolder]: 11426/48957 cut-off events. [2023-09-01 00:29:19,869 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:29:20,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60321 conditions, 48957 events. 11426/48957 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 625430 event pairs, 7181 based on Foata normal form. 0/38519 useless extension candidates. Maximal degree in co-relation 29496. Up to 11264 conditions per place. [2023-09-01 00:29:20,518 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 427 transitions, 1052 flow [2023-09-01 00:29:20,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 427 transitions, 1052 flow [2023-09-01 00:29:20,956 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:29:20,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 365 places, 427 transitions, 1052 flow [2023-09-01 00:29:20,956 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 365 places, 427 transitions, 1052 flow [2023-09-01 00:29:20,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 427 transitions, 1052 flow [2023-09-01 00:29:30,325 INFO L130 PetriNetUnfolder]: 11426/48957 cut-off events. [2023-09-01 00:29:30,326 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:29:31,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60321 conditions, 48957 events. 11426/48957 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 625430 event pairs, 7181 based on Foata normal form. 0/38519 useless extension candidates. Maximal degree in co-relation 29496. Up to 11264 conditions per place. [2023-09-01 00:29:34,783 INFO L119 LiptonReduction]: Number of co-enabled transitions 131824 [2023-09-01 00:29:37,521 INFO L134 LiptonReduction]: Checked pairs total: 404738 [2023-09-01 00:29:37,521 INFO L136 LiptonReduction]: Total number of compositions: 256 [2023-09-01 00:29:37,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:29:37,549 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:29:37,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:29:37,694 INFO L130 PetriNetUnfolder]: 372/1504 cut-off events. [2023-09-01 00:29:37,694 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 00:29:37,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:29:37,695 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:29:37,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:29:37,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:29:37,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1507501366, now seen corresponding path program 1 times [2023-09-01 00:29:37,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:29:37,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729749284] [2023-09-01 00:29:37,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:29:37,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:29:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:37,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:29:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:37,738 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:29:37,738 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:29:37,738 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:29:37,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:29:37,738 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:29:37,739 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:29:37,739 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:29:37,739 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:29:37,758 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:29:37,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 457 transitions, 1142 flow [2023-09-01 00:29:58,762 INFO L130 PetriNetUnfolder]: 24752/99202 cut-off events. [2023-09-01 00:29:58,762 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:30:02,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123893 conditions, 99202 events. 24752/99202 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2187. Compared 1391793 event pairs, 16398 based on Foata normal form. 0/78507 useless extension candidates. Maximal degree in co-relation 60297. Up to 24576 conditions per place. [2023-09-01 00:30:02,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 390 places, 457 transitions, 1142 flow [2023-09-01 00:30:03,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 390 places, 457 transitions, 1142 flow [2023-09-01 00:30:03,353 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:03,353 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 390 places, 457 transitions, 1142 flow [2023-09-01 00:30:03,353 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 390 places, 457 transitions, 1142 flow [2023-09-01 00:30:03,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 457 transitions, 1142 flow [2023-09-01 00:30:24,020 INFO L130 PetriNetUnfolder]: 24752/99202 cut-off events. [2023-09-01 00:30:24,021 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:30:27,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123893 conditions, 99202 events. 24752/99202 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2187. Compared 1391793 event pairs, 16398 based on Foata normal form. 0/78507 useless extension candidates. Maximal degree in co-relation 60297. Up to 24576 conditions per place. [2023-09-01 00:30:35,719 INFO L119 LiptonReduction]: Number of co-enabled transitions 154224 [2023-09-01 00:30:38,381 INFO L134 LiptonReduction]: Checked pairs total: 469264 [2023-09-01 00:30:38,382 INFO L136 LiptonReduction]: Total number of compositions: 273 [2023-09-01 00:30:38,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:38,384 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:38,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:38,539 INFO L130 PetriNetUnfolder]: 585/2206 cut-off events. [2023-09-01 00:30:38,539 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 00:30:38,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:38,539 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 00:30:38,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:38,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:38,540 INFO L85 PathProgramCache]: Analyzing trace with hash -165911984, now seen corresponding path program 1 times [2023-09-01 00:30:38,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:38,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716186044] [2023-09-01 00:30:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:38,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:38,564 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:38,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:38,580 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:38,581 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:38,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:30:38,581 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:38,581 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:38,581 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:38,581 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:30:38,600 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:30:38,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 487 transitions, 1234 flow [2023-09-01 00:31:27,001 INFO L130 PetriNetUnfolder]: 53438/201671 cut-off events. [2023-09-01 00:31:27,002 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:31:34,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255050 conditions, 201671 events. 53438/201671 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4202. Compared 3072729 event pairs, 36879 based on Foata normal form. 0/160479 useless extension candidates. Maximal degree in co-relation 123867. Up to 53248 conditions per place. [2023-09-01 00:31:34,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 415 places, 487 transitions, 1234 flow [2023-09-01 00:31:38,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 415 places, 487 transitions, 1234 flow [2023-09-01 00:31:38,425 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:31:38,425 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 415 places, 487 transitions, 1234 flow [2023-09-01 00:31:38,425 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 415 places, 487 transitions, 1234 flow [2023-09-01 00:31:38,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 487 transitions, 1234 flow [2023-09-01 00:32:23,130 INFO L130 PetriNetUnfolder]: 53438/201671 cut-off events. [2023-09-01 00:32:23,130 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:32:30,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255050 conditions, 201671 events. 53438/201671 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4202. Compared 3072729 event pairs, 36879 based on Foata normal form. 0/160479 useless extension candidates. Maximal degree in co-relation 123867. Up to 53248 conditions per place. [2023-09-01 00:32:49,553 INFO L119 LiptonReduction]: Number of co-enabled transitions 178360 [2023-09-01 00:32:53,636 INFO L134 LiptonReduction]: Checked pairs total: 549591 [2023-09-01 00:32:53,636 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-09-01 00:32:53,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:32:53,640 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;@2072d4de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:32:53,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:32:54,011 INFO L130 PetriNetUnfolder]: 927/3268 cut-off events. [2023-09-01 00:32:54,012 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 00:32:54,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:32:54,012 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 00:32:54,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:32:54,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:32:54,013 INFO L85 PathProgramCache]: Analyzing trace with hash 236602808, now seen corresponding path program 1 times [2023-09-01 00:32:54,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:32:54,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078311712] [2023-09-01 00:32:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:32:54,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:32:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:32:54,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:32:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:32:54,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:32:54,076 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:32:54,077 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:32:54,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 00:32:54,077 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:32:54,077 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:32:54,077 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:32:54,078 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 00:32:54,111 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 00:32:54,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 440 places, 517 transitions, 1328 flow