./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-ext/29_conditionals_vs.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/pthread-ext/29_conditionals_vs.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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 22:45:45,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 22:45:45,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 22:45:45,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 22:45:45,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 22:45:45,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 22:45:45,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 22:45:45,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 22:45:45,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 22:45:45,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 22:45:45,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 22:45:45,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 22:45:45,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 22:45:45,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 22:45:45,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 22:45:45,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 22:45:45,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 22:45:45,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 22:45:45,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 22:45:45,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 22:45:45,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 22:45:45,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 22:45:45,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 22:45:45,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 22:45:45,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 22:45:45,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 22:45:45,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 22:45:45,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 22:45:45,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 22:45:45,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 22:45:45,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 22:45:45,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 22:45:45,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 22:45:45,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 22:45:45,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 22:45:45,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 22:45:45,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 22:45:45,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 22:45:45,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 22:45:45,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 22:45:45,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 22:45:45,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 22:45:45,925 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 22:45:45,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 22:45:45,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 22:45:45,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 22:45:45,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 22:45:45,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 22:45:45,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 22:45:45,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 22:45:45,928 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 22:45:45,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 22:45:45,929 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 22:45:45,929 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 22:45:45,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 22:45:45,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 22:45:45,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 22:45:45,930 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 22:45:45,930 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 22:45:45,930 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 22:45:45,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 22:45:45,930 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 22:45:45,931 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 22:45:45,931 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 22:45:45,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 22:45:45,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 22:45:45,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 22:45:45,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 22:45:45,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 22:45:45,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 22:45:45,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 22:45:45,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 22:45:45,932 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 22:45:45,932 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 22:45:45,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 22:45:45,933 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 22:45:45,933 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 22:45:46,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 22:45:46,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 22:45:46,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 22:45:46,203 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 22:45:46,203 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 22:45:46,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2023-08-31 22:45:47,143 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 22:45:47,371 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 22:45:47,374 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2023-08-31 22:45:47,386 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b6743d71/ee34696a108d4631b9c44ddc4e990aa9/FLAG13a7d1d49 [2023-08-31 22:45:47,403 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b6743d71/ee34696a108d4631b9c44ddc4e990aa9 [2023-08-31 22:45:47,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 22:45:47,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 22:45:47,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 22:45:47,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 22:45:47,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 22:45:47,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3576e681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47, skipping insertion in model container [2023-08-31 22:45:47,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 22:45:47,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 22:45:47,659 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i[30422,30435] [2023-08-31 22:45:47,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 22:45:47,673 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 22:45:47,704 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i[30422,30435] [2023-08-31 22:45:47,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 22:45:47,736 INFO L208 MainTranslator]: Completed translation [2023-08-31 22:45:47,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47 WrapperNode [2023-08-31 22:45:47,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 22:45:47,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 22:45:47,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 22:45:47,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 22:45:47,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,775 INFO L138 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 61 [2023-08-31 22:45:47,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 22:45:47,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 22:45:47,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 22:45:47,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 22:45:47,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,790 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 22:45:47,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 22:45:47,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 22:45:47,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 22:45:47,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47" (1/1) ... [2023-08-31 22:45:47,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 22:45:47,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 22:45:47,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 22:45:47,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 22:45:47,846 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-31 22:45:47,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-31 22:45:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 22:45:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 22:45:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 22:45:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 22:45:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 22:45:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 22:45:47,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 22:45:47,849 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 22:45:47,997 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 22:45:47,998 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 22:45:48,147 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 22:45:48,177 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 22:45:48,181 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-31 22:45:48,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:45:48 BoogieIcfgContainer [2023-08-31 22:45:48,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 22:45:48,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 22:45:48,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 22:45:48,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 22:45:48,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 10:45:47" (1/3) ... [2023-08-31 22:45:48,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e9287d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 10:45:48, skipping insertion in model container [2023-08-31 22:45:48,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:45:47" (2/3) ... [2023-08-31 22:45:48,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e9287d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 10:45:48, skipping insertion in model container [2023-08-31 22:45:48,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:45:48" (3/3) ... [2023-08-31 22:45:48,188 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2023-08-31 22:45:48,199 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 22:45:48,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-31 22:45:48,199 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 22:45:48,248 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:45:48,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 60 transitions, 125 flow [2023-08-31 22:45:48,325 INFO L130 PetriNetUnfolder]: 6/75 cut-off events. [2023-08-31 22:45:48,325 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:45:48,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 6/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 106 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2023-08-31 22:45:48,329 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 60 transitions, 125 flow [2023-08-31 22:45:48,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 60 transitions, 125 flow [2023-08-31 22:45:48,335 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:45:48,343 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 60 transitions, 125 flow [2023-08-31 22:45:48,345 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 60 transitions, 125 flow [2023-08-31 22:45:48,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 60 transitions, 125 flow [2023-08-31 22:45:48,369 INFO L130 PetriNetUnfolder]: 6/75 cut-off events. [2023-08-31 22:45:48,369 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:45:48,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 6/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 106 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2023-08-31 22:45:48,371 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-31 22:45:50,090 INFO L134 LiptonReduction]: Checked pairs total: 887 [2023-08-31 22:45:50,090 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-08-31 22:45:50,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:45:50,102 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:45:50,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:45:50,105 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-31 22:45:50,105 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:45:50,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:45:50,105 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 22:45:50,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:45:50,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:45:50,109 INFO L85 PathProgramCache]: Analyzing trace with hash 357213265, now seen corresponding path program 1 times [2023-08-31 22:45:50,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:45:50,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291947294] [2023-08-31 22:45:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:45:50,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:45:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:45:50,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:45:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:45:50,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:45:50,208 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:45:50,209 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:45:50,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 22:45:50,210 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:45:50,215 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:45:50,216 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:45:50,216 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 22:45:50,234 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:45:50,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2023-08-31 22:45:50,265 INFO L130 PetriNetUnfolder]: 11/122 cut-off events. [2023-08-31 22:45:50,266 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:45:50,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 122 events. 11/122 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 252 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2023-08-31 22:45:50,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 90 transitions, 192 flow [2023-08-31 22:45:50,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 90 transitions, 192 flow [2023-08-31 22:45:50,269 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:45:50,269 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 90 transitions, 192 flow [2023-08-31 22:45:50,270 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 90 transitions, 192 flow [2023-08-31 22:45:50,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2023-08-31 22:45:50,292 INFO L130 PetriNetUnfolder]: 11/122 cut-off events. [2023-08-31 22:45:50,292 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:45:50,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 122 events. 11/122 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 252 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2023-08-31 22:45:50,296 INFO L119 LiptonReduction]: Number of co-enabled transitions 3828 [2023-08-31 22:45:52,326 INFO L134 LiptonReduction]: Checked pairs total: 3628 [2023-08-31 22:45:52,326 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-31 22:45:52,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:45:52,328 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:45:52,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:45:52,330 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2023-08-31 22:45:52,331 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:45:52,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:45:52,331 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 22:45:52,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:45:52,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:45:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1071545629, now seen corresponding path program 1 times [2023-08-31 22:45:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:45:52,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432940689] [2023-08-31 22:45:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:45:52,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:45:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:45:52,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:45:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:45:52,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:45:52,359 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:45:52,359 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:45:52,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 22:45:52,359 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:45:52,360 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:45:52,360 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:45:52,360 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 22:45:52,377 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:45:52,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 120 transitions, 261 flow [2023-08-31 22:45:52,401 INFO L130 PetriNetUnfolder]: 16/169 cut-off events. [2023-08-31 22:45:52,402 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 22:45:52,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 169 events. 16/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 441 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 126. Up to 8 conditions per place. [2023-08-31 22:45:52,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 120 transitions, 261 flow [2023-08-31 22:45:52,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 120 transitions, 261 flow [2023-08-31 22:45:52,406 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:45:52,406 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 120 transitions, 261 flow [2023-08-31 22:45:52,406 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 120 transitions, 261 flow [2023-08-31 22:45:52,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 120 transitions, 261 flow [2023-08-31 22:45:52,417 INFO L130 PetriNetUnfolder]: 16/169 cut-off events. [2023-08-31 22:45:52,417 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 22:45:52,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 169 events. 16/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 441 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 126. Up to 8 conditions per place. [2023-08-31 22:45:52,421 INFO L119 LiptonReduction]: Number of co-enabled transitions 8352 [2023-08-31 22:45:55,110 INFO L134 LiptonReduction]: Checked pairs total: 8287 [2023-08-31 22:45:55,110 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-31 22:45:55,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:45:55,112 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:45:55,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:45:55,115 INFO L130 PetriNetUnfolder]: 1/41 cut-off events. [2023-08-31 22:45:55,115 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 22:45:55,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:45:55,115 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 22:45:55,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:45:55,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:45:55,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1061430325, now seen corresponding path program 1 times [2023-08-31 22:45:55,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:45:55,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099482279] [2023-08-31 22:45:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:45:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:45:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:45:55,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:45:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:45:55,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:45:55,145 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:45:55,145 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:45:55,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 22:45:55,146 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:45:55,146 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:45:55,146 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:45:55,146 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 22:45:55,160 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:45:55,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 150 transitions, 332 flow [2023-08-31 22:45:55,176 INFO L130 PetriNetUnfolder]: 21/216 cut-off events. [2023-08-31 22:45:55,176 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 22:45:55,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 216 events. 21/216 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 626 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 177. Up to 10 conditions per place. [2023-08-31 22:45:55,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 150 transitions, 332 flow [2023-08-31 22:45:55,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 150 transitions, 332 flow [2023-08-31 22:45:55,179 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:45:55,179 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 150 transitions, 332 flow [2023-08-31 22:45:55,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 150 transitions, 332 flow [2023-08-31 22:45:55,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 150 transitions, 332 flow [2023-08-31 22:45:55,198 INFO L130 PetriNetUnfolder]: 21/216 cut-off events. [2023-08-31 22:45:55,199 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 22:45:55,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 216 events. 21/216 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 626 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 177. Up to 10 conditions per place. [2023-08-31 22:45:55,205 INFO L119 LiptonReduction]: Number of co-enabled transitions 14616 [2023-08-31 22:45:58,333 INFO L134 LiptonReduction]: Checked pairs total: 14139 [2023-08-31 22:45:58,334 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-08-31 22:45:58,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:45:58,336 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:45:58,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:45:58,339 INFO L130 PetriNetUnfolder]: 1/52 cut-off events. [2023-08-31 22:45:58,339 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 22:45:58,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:45:58,339 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 22:45:58,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:45:58,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:45:58,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1307431076, now seen corresponding path program 1 times [2023-08-31 22:45:58,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:45:58,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433434595] [2023-08-31 22:45:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:45:58,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:45:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:45:58,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:45:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:45:58,405 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:45:58,407 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:45:58,408 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:45:58,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 22:45:58,408 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:45:58,408 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:45:58,409 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:45:58,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 22:45:58,430 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:45:58,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 180 transitions, 405 flow [2023-08-31 22:45:58,453 INFO L130 PetriNetUnfolder]: 26/263 cut-off events. [2023-08-31 22:45:58,453 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 22:45:58,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 263 events. 26/263 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 830 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 229. Up to 12 conditions per place. [2023-08-31 22:45:58,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 180 transitions, 405 flow [2023-08-31 22:45:58,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 180 transitions, 405 flow [2023-08-31 22:45:58,461 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:45:58,461 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 180 transitions, 405 flow [2023-08-31 22:45:58,462 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 180 transitions, 405 flow [2023-08-31 22:45:58,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 180 transitions, 405 flow [2023-08-31 22:45:58,483 INFO L130 PetriNetUnfolder]: 26/263 cut-off events. [2023-08-31 22:45:58,483 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 22:45:58,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 263 events. 26/263 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 830 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 229. Up to 12 conditions per place. [2023-08-31 22:45:58,493 INFO L119 LiptonReduction]: Number of co-enabled transitions 22620 [2023-08-31 22:46:02,329 INFO L134 LiptonReduction]: Checked pairs total: 22178 [2023-08-31 22:46:02,329 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-31 22:46:02,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:46:02,331 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:46:02,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:46:02,335 INFO L130 PetriNetUnfolder]: 1/63 cut-off events. [2023-08-31 22:46:02,335 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 22:46:02,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:46:02,335 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:46:02,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:46:02,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:46:02,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1041726554, now seen corresponding path program 1 times [2023-08-31 22:46:02,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:46:02,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505008528] [2023-08-31 22:46:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:46:02,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:46:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:02,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:46:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:02,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:46:02,361 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:46:02,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:46:02,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 22:46:02,362 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:46:02,362 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:46:02,362 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:46:02,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 22:46:02,377 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:46:02,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 210 transitions, 480 flow [2023-08-31 22:46:02,405 INFO L130 PetriNetUnfolder]: 31/310 cut-off events. [2023-08-31 22:46:02,406 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 22:46:02,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 310 events. 31/310 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 976 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 284. Up to 14 conditions per place. [2023-08-31 22:46:02,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 210 transitions, 480 flow [2023-08-31 22:46:02,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 210 transitions, 480 flow [2023-08-31 22:46:02,410 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:46:02,410 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 210 transitions, 480 flow [2023-08-31 22:46:02,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 210 transitions, 480 flow [2023-08-31 22:46:02,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 210 transitions, 480 flow [2023-08-31 22:46:02,432 INFO L130 PetriNetUnfolder]: 31/310 cut-off events. [2023-08-31 22:46:02,432 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 22:46:02,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 310 events. 31/310 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 976 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 284. Up to 14 conditions per place. [2023-08-31 22:46:02,440 INFO L119 LiptonReduction]: Number of co-enabled transitions 32364 [2023-08-31 22:46:06,723 INFO L134 LiptonReduction]: Checked pairs total: 29501 [2023-08-31 22:46:06,724 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-08-31 22:46:06,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:46:06,725 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:46:06,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:46:06,730 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2023-08-31 22:46:06,730 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 22:46:06,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:46:06,730 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:46:06,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:46:06,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:46:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash -820972917, now seen corresponding path program 1 times [2023-08-31 22:46:06,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:46:06,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533267391] [2023-08-31 22:46:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:46:06,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:46:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:06,764 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:46:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:06,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:46:06,788 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:46:06,788 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:46:06,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 22:46:06,789 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:46:06,790 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:46:06,791 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:46:06,791 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 22:46:06,815 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:46:06,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 240 transitions, 557 flow [2023-08-31 22:46:06,849 INFO L130 PetriNetUnfolder]: 36/357 cut-off events. [2023-08-31 22:46:06,849 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 22:46:06,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 357 events. 36/357 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1162 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 340. Up to 16 conditions per place. [2023-08-31 22:46:06,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 240 transitions, 557 flow [2023-08-31 22:46:06,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 240 transitions, 557 flow [2023-08-31 22:46:06,854 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:46:06,854 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 240 transitions, 557 flow [2023-08-31 22:46:06,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 240 transitions, 557 flow [2023-08-31 22:46:06,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 240 transitions, 557 flow [2023-08-31 22:46:06,883 INFO L130 PetriNetUnfolder]: 36/357 cut-off events. [2023-08-31 22:46:06,883 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 22:46:06,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 357 events. 36/357 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1162 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 340. Up to 16 conditions per place. [2023-08-31 22:46:06,902 INFO L119 LiptonReduction]: Number of co-enabled transitions 43848 [2023-08-31 22:46:11,989 INFO L134 LiptonReduction]: Checked pairs total: 41753 [2023-08-31 22:46:11,989 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-08-31 22:46:11,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:46:11,991 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:46:11,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:46:11,996 INFO L130 PetriNetUnfolder]: 0/83 cut-off events. [2023-08-31 22:46:11,996 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 22:46:11,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:46:11,996 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:46:11,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:46:11,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:46:11,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1292634471, now seen corresponding path program 1 times [2023-08-31 22:46:11,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:46:11,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801250081] [2023-08-31 22:46:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:46:11,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:46:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:12,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:46:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:12,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:46:12,047 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:46:12,047 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:46:12,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 22:46:12,048 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:46:12,048 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:46:12,048 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:46:12,048 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 22:46:12,067 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:46:12,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 270 transitions, 636 flow [2023-08-31 22:46:12,114 INFO L130 PetriNetUnfolder]: 41/404 cut-off events. [2023-08-31 22:46:12,115 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 22:46:12,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 404 events. 41/404 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1358 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 397. Up to 18 conditions per place. [2023-08-31 22:46:12,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 270 transitions, 636 flow [2023-08-31 22:46:12,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 270 transitions, 636 flow [2023-08-31 22:46:12,122 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:46:12,122 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 270 transitions, 636 flow [2023-08-31 22:46:12,122 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 270 transitions, 636 flow [2023-08-31 22:46:12,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 270 transitions, 636 flow [2023-08-31 22:46:12,155 INFO L130 PetriNetUnfolder]: 41/404 cut-off events. [2023-08-31 22:46:12,155 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 22:46:12,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 404 events. 41/404 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1358 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 397. Up to 18 conditions per place. [2023-08-31 22:46:12,169 INFO L119 LiptonReduction]: Number of co-enabled transitions 57072 [2023-08-31 22:46:17,683 INFO L134 LiptonReduction]: Checked pairs total: 54463 [2023-08-31 22:46:17,683 INFO L136 LiptonReduction]: Total number of compositions: 299 [2023-08-31 22:46:17,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:46:17,685 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:46:17,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:46:17,691 INFO L130 PetriNetUnfolder]: 0/94 cut-off events. [2023-08-31 22:46:17,691 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 22:46:17,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:46:17,691 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:46:17,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:46:17,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:46:17,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1096958905, now seen corresponding path program 1 times [2023-08-31 22:46:17,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:46:17,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493531691] [2023-08-31 22:46:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:46:17,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:46:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:17,715 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:46:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:17,735 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:46:17,736 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:46:17,737 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:46:17,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 22:46:17,737 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:46:17,738 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:46:17,739 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:46:17,739 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 22:46:17,757 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:46:17,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 300 transitions, 717 flow [2023-08-31 22:46:17,820 INFO L130 PetriNetUnfolder]: 46/451 cut-off events. [2023-08-31 22:46:17,820 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 22:46:17,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 451 events. 46/451 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1548 event pairs, 0 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 455. Up to 20 conditions per place. [2023-08-31 22:46:17,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 300 transitions, 717 flow [2023-08-31 22:46:17,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 300 transitions, 717 flow [2023-08-31 22:46:17,828 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:46:17,828 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 282 places, 300 transitions, 717 flow [2023-08-31 22:46:17,828 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 282 places, 300 transitions, 717 flow [2023-08-31 22:46:17,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 300 transitions, 717 flow [2023-08-31 22:46:17,876 INFO L130 PetriNetUnfolder]: 46/451 cut-off events. [2023-08-31 22:46:17,876 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 22:46:17,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 451 events. 46/451 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1548 event pairs, 0 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 455. Up to 20 conditions per place. [2023-08-31 22:46:17,894 INFO L119 LiptonReduction]: Number of co-enabled transitions 72036 [2023-08-31 22:46:24,005 INFO L134 LiptonReduction]: Checked pairs total: 70904 [2023-08-31 22:46:24,006 INFO L136 LiptonReduction]: Total number of compositions: 332 [2023-08-31 22:46:24,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:46:24,007 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:46:24,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:46:24,013 INFO L130 PetriNetUnfolder]: 3/111 cut-off events. [2023-08-31 22:46:24,014 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 22:46:24,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:46:24,014 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:46:24,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:46:24,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:46:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1817282354, now seen corresponding path program 1 times [2023-08-31 22:46:24,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:46:24,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338527041] [2023-08-31 22:46:24,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:46:24,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:46:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:24,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:46:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:24,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:46:24,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:46:24,044 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:46:24,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 22:46:24,045 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:46:24,045 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:46:24,046 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:46:24,047 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 22:46:24,068 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:46:24,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 330 transitions, 800 flow [2023-08-31 22:46:24,128 INFO L130 PetriNetUnfolder]: 51/498 cut-off events. [2023-08-31 22:46:24,129 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 22:46:24,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 498 events. 51/498 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1735 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 514. Up to 22 conditions per place. [2023-08-31 22:46:24,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 330 transitions, 800 flow [2023-08-31 22:46:24,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 330 transitions, 800 flow [2023-08-31 22:46:24,137 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:46:24,137 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 330 transitions, 800 flow [2023-08-31 22:46:24,137 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 330 transitions, 800 flow [2023-08-31 22:46:24,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 330 transitions, 800 flow [2023-08-31 22:46:24,184 INFO L130 PetriNetUnfolder]: 51/498 cut-off events. [2023-08-31 22:46:24,184 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 22:46:24,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 498 events. 51/498 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1735 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 514. Up to 22 conditions per place. [2023-08-31 22:46:24,203 INFO L119 LiptonReduction]: Number of co-enabled transitions 88740 [2023-08-31 22:46:30,518 INFO L134 LiptonReduction]: Checked pairs total: 83018 [2023-08-31 22:46:30,518 INFO L136 LiptonReduction]: Total number of compositions: 369 [2023-08-31 22:46:30,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:46:30,519 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:46:30,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:46:30,526 INFO L130 PetriNetUnfolder]: 4/124 cut-off events. [2023-08-31 22:46:30,526 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 22:46:30,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:46:30,527 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:46:30,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:46:30,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:46:30,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1756986503, now seen corresponding path program 1 times [2023-08-31 22:46:30,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:46:30,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615951540] [2023-08-31 22:46:30,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:46:30,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:46:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:30,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:46:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:30,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:46:30,553 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:46:30,553 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:46:30,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 22:46:30,554 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:46:30,554 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:46:30,554 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:46:30,554 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 22:46:30,577 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:46:30,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 360 transitions, 885 flow [2023-08-31 22:46:30,636 INFO L130 PetriNetUnfolder]: 56/545 cut-off events. [2023-08-31 22:46:30,636 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 22:46:30,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 545 events. 56/545 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1935 event pairs, 0 based on Foata normal form. 0/430 useless extension candidates. Maximal degree in co-relation 574. Up to 24 conditions per place. [2023-08-31 22:46:30,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 360 transitions, 885 flow [2023-08-31 22:46:30,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 338 places, 360 transitions, 885 flow [2023-08-31 22:46:30,674 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:46:30,674 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 338 places, 360 transitions, 885 flow [2023-08-31 22:46:30,674 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 338 places, 360 transitions, 885 flow [2023-08-31 22:46:30,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 360 transitions, 885 flow [2023-08-31 22:46:30,729 INFO L130 PetriNetUnfolder]: 56/545 cut-off events. [2023-08-31 22:46:30,730 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 22:46:30,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 545 events. 56/545 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1935 event pairs, 0 based on Foata normal form. 0/430 useless extension candidates. Maximal degree in co-relation 574. Up to 24 conditions per place. [2023-08-31 22:46:30,752 INFO L119 LiptonReduction]: Number of co-enabled transitions 107184 [2023-08-31 22:46:37,352 INFO L134 LiptonReduction]: Checked pairs total: 96817 [2023-08-31 22:46:37,353 INFO L136 LiptonReduction]: Total number of compositions: 392 [2023-08-31 22:46:37,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:46:37,371 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:46:37,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:46:37,380 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2023-08-31 22:46:37,380 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 22:46:37,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:46:37,381 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:46:37,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:46:37,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:46:37,381 INFO L85 PathProgramCache]: Analyzing trace with hash -277908635, now seen corresponding path program 1 times [2023-08-31 22:46:37,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:46:37,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12451585] [2023-08-31 22:46:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:46:37,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:46:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:37,397 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:46:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:37,409 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:46:37,410 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:46:37,410 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:46:37,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 22:46:37,410 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:46:37,410 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:46:37,410 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:46:37,410 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 22:46:37,432 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:46:37,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 366 places, 390 transitions, 972 flow [2023-08-31 22:46:37,516 INFO L130 PetriNetUnfolder]: 61/592 cut-off events. [2023-08-31 22:46:37,516 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 22:46:37,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 592 events. 61/592 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2082 event pairs, 0 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 635. Up to 26 conditions per place. [2023-08-31 22:46:37,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 366 places, 390 transitions, 972 flow [2023-08-31 22:46:37,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 366 places, 390 transitions, 972 flow [2023-08-31 22:46:37,527 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:46:37,528 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 366 places, 390 transitions, 972 flow [2023-08-31 22:46:37,528 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 366 places, 390 transitions, 972 flow [2023-08-31 22:46:37,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 366 places, 390 transitions, 972 flow [2023-08-31 22:46:37,610 INFO L130 PetriNetUnfolder]: 61/592 cut-off events. [2023-08-31 22:46:37,611 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 22:46:37,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 592 events. 61/592 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2082 event pairs, 0 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 635. Up to 26 conditions per place. [2023-08-31 22:46:37,642 INFO L119 LiptonReduction]: Number of co-enabled transitions 127368 [2023-08-31 22:46:45,022 INFO L134 LiptonReduction]: Checked pairs total: 126749 [2023-08-31 22:46:45,022 INFO L136 LiptonReduction]: Total number of compositions: 439 [2023-08-31 22:46:45,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:46:45,024 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:46:45,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:46:45,033 INFO L130 PetriNetUnfolder]: 6/150 cut-off events. [2023-08-31 22:46:45,033 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 22:46:45,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:46:45,033 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:46:45,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:46:45,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:46:45,034 INFO L85 PathProgramCache]: Analyzing trace with hash 797748513, now seen corresponding path program 1 times [2023-08-31 22:46:45,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:46:45,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881800795] [2023-08-31 22:46:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:46:45,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:46:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:45,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:46:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:45,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:46:45,072 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:46:45,072 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:46:45,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 22:46:45,072 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:46:45,074 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:46:45,074 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:46:45,074 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 22:46:45,101 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:46:45,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 394 places, 420 transitions, 1061 flow [2023-08-31 22:46:45,191 INFO L130 PetriNetUnfolder]: 66/639 cut-off events. [2023-08-31 22:46:45,191 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 22:46:45,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 639 events. 66/639 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2277 event pairs, 0 based on Foata normal form. 0/504 useless extension candidates. Maximal degree in co-relation 697. Up to 28 conditions per place. [2023-08-31 22:46:45,201 INFO L82 GeneralOperation]: Start removeDead. Operand has 394 places, 420 transitions, 1061 flow [2023-08-31 22:46:45,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 394 places, 420 transitions, 1061 flow [2023-08-31 22:46:45,206 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:46:45,206 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 394 places, 420 transitions, 1061 flow [2023-08-31 22:46:45,206 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 394 places, 420 transitions, 1061 flow [2023-08-31 22:46:45,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 394 places, 420 transitions, 1061 flow [2023-08-31 22:46:45,293 INFO L130 PetriNetUnfolder]: 66/639 cut-off events. [2023-08-31 22:46:45,293 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 22:46:45,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 639 events. 66/639 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2277 event pairs, 0 based on Foata normal form. 0/504 useless extension candidates. Maximal degree in co-relation 697. Up to 28 conditions per place. [2023-08-31 22:46:45,326 INFO L119 LiptonReduction]: Number of co-enabled transitions 149292 [2023-08-31 22:46:54,150 INFO L134 LiptonReduction]: Checked pairs total: 142857 [2023-08-31 22:46:54,151 INFO L136 LiptonReduction]: Total number of compositions: 470 [2023-08-31 22:46:54,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:46:54,152 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:46:54,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:46:54,162 INFO L130 PetriNetUnfolder]: 2/153 cut-off events. [2023-08-31 22:46:54,162 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 22:46:54,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:46:54,162 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:46:54,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:46:54,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:46:54,163 INFO L85 PathProgramCache]: Analyzing trace with hash -539649405, now seen corresponding path program 1 times [2023-08-31 22:46:54,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:46:54,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952900630] [2023-08-31 22:46:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:46:54,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:46:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:54,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:46:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:46:54,194 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:46:54,194 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:46:54,194 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:46:54,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 22:46:54,194 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:46:54,195 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:46:54,195 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:46:54,195 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-31 22:46:54,225 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:46:54,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 450 transitions, 1152 flow [2023-08-31 22:46:54,335 INFO L130 PetriNetUnfolder]: 71/686 cut-off events. [2023-08-31 22:46:54,336 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 22:46:54,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 686 events. 71/686 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2474 event pairs, 0 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 760. Up to 30 conditions per place. [2023-08-31 22:46:54,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 422 places, 450 transitions, 1152 flow [2023-08-31 22:46:54,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 422 places, 450 transitions, 1152 flow [2023-08-31 22:46:54,351 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:46:54,352 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 422 places, 450 transitions, 1152 flow [2023-08-31 22:46:54,352 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 422 places, 450 transitions, 1152 flow [2023-08-31 22:46:54,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 450 transitions, 1152 flow [2023-08-31 22:46:54,461 INFO L130 PetriNetUnfolder]: 71/686 cut-off events. [2023-08-31 22:46:54,461 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 22:46:54,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 686 events. 71/686 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2474 event pairs, 0 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 760. Up to 30 conditions per place. [2023-08-31 22:46:54,500 INFO L119 LiptonReduction]: Number of co-enabled transitions 172956 [2023-08-31 22:47:03,269 INFO L134 LiptonReduction]: Checked pairs total: 163348 [2023-08-31 22:47:03,270 INFO L136 LiptonReduction]: Total number of compositions: 507 [2023-08-31 22:47:03,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:47:03,271 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:47:03,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:47:03,282 INFO L130 PetriNetUnfolder]: 5/170 cut-off events. [2023-08-31 22:47:03,283 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 22:47:03,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:47:03,283 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:47:03,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:47:03,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:47:03,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1603659683, now seen corresponding path program 1 times [2023-08-31 22:47:03,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:47:03,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134104082] [2023-08-31 22:47:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:47:03,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:47:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:47:03,305 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:47:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:47:03,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:47:03,322 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:47:03,323 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:47:03,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 22:47:03,323 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:47:03,323 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:47:03,323 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:47:03,323 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-08-31 22:47:03,367 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:47:03,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 450 places, 480 transitions, 1245 flow [2023-08-31 22:47:03,478 INFO L130 PetriNetUnfolder]: 76/733 cut-off events. [2023-08-31 22:47:03,478 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 22:47:03,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 733 events. 76/733 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2648 event pairs, 0 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 824. Up to 32 conditions per place. [2023-08-31 22:47:03,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 450 places, 480 transitions, 1245 flow [2023-08-31 22:47:03,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 450 places, 480 transitions, 1245 flow [2023-08-31 22:47:03,498 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:47:03,498 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 450 places, 480 transitions, 1245 flow [2023-08-31 22:47:03,498 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 450 places, 480 transitions, 1245 flow [2023-08-31 22:47:03,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 450 places, 480 transitions, 1245 flow [2023-08-31 22:47:03,621 INFO L130 PetriNetUnfolder]: 76/733 cut-off events. [2023-08-31 22:47:03,622 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 22:47:03,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 733 events. 76/733 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2648 event pairs, 0 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 824. Up to 32 conditions per place. [2023-08-31 22:47:03,664 INFO L119 LiptonReduction]: Number of co-enabled transitions 198360 [2023-08-31 22:47:13,366 INFO L134 LiptonReduction]: Checked pairs total: 189278 [2023-08-31 22:47:13,366 INFO L136 LiptonReduction]: Total number of compositions: 546 [2023-08-31 22:47:13,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:47:13,367 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:47:13,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:47:13,381 INFO L130 PetriNetUnfolder]: 4/179 cut-off events. [2023-08-31 22:47:13,381 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 22:47:13,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:47:13,381 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:47:13,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:47:13,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:47:13,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2010218205, now seen corresponding path program 1 times [2023-08-31 22:47:13,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:47:13,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428887353] [2023-08-31 22:47:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:47:13,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:47:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:47:13,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:47:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:47:13,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:47:13,421 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:47:13,422 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:47:13,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 22:47:13,423 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:47:13,423 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:47:13,423 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:47:13,423 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-08-31 22:47:13,455 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:47:13,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 478 places, 510 transitions, 1340 flow [2023-08-31 22:47:13,576 INFO L130 PetriNetUnfolder]: 81/780 cut-off events. [2023-08-31 22:47:13,576 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 22:47:13,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 780 events. 81/780 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2837 event pairs, 0 based on Foata normal form. 0/615 useless extension candidates. Maximal degree in co-relation 889. Up to 34 conditions per place. [2023-08-31 22:47:13,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 478 places, 510 transitions, 1340 flow [2023-08-31 22:47:13,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 478 places, 510 transitions, 1340 flow [2023-08-31 22:47:13,597 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:47:13,598 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 478 places, 510 transitions, 1340 flow [2023-08-31 22:47:13,598 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 478 places, 510 transitions, 1340 flow [2023-08-31 22:47:13,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 478 places, 510 transitions, 1340 flow [2023-08-31 22:47:13,726 INFO L130 PetriNetUnfolder]: 81/780 cut-off events. [2023-08-31 22:47:13,726 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 22:47:13,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 780 events. 81/780 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2837 event pairs, 0 based on Foata normal form. 0/615 useless extension candidates. Maximal degree in co-relation 889. Up to 34 conditions per place. [2023-08-31 22:47:13,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 225504 [2023-08-31 22:47:23,987 INFO L134 LiptonReduction]: Checked pairs total: 216519 [2023-08-31 22:47:23,987 INFO L136 LiptonReduction]: Total number of compositions: 569 [2023-08-31 22:47:24,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:47:24,013 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:47:24,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:47:24,026 INFO L130 PetriNetUnfolder]: 4/190 cut-off events. [2023-08-31 22:47:24,026 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 22:47:24,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:47:24,027 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:47:24,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:47:24,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:47:24,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1238988588, now seen corresponding path program 1 times [2023-08-31 22:47:24,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:47:24,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170828116] [2023-08-31 22:47:24,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:47:24,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:47:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:47:24,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:47:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:47:24,061 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:47:24,062 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:47:24,062 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:47:24,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 22:47:24,062 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:47:24,062 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:47:24,063 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:47:24,063 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-08-31 22:47:24,100 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:47:24,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 506 places, 540 transitions, 1437 flow [2023-08-31 22:47:24,235 INFO L130 PetriNetUnfolder]: 86/827 cut-off events. [2023-08-31 22:47:24,235 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 22:47:24,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 827 events. 86/827 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3028 event pairs, 0 based on Foata normal form. 0/652 useless extension candidates. Maximal degree in co-relation 955. Up to 36 conditions per place. [2023-08-31 22:47:24,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 506 places, 540 transitions, 1437 flow [2023-08-31 22:47:24,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 506 places, 540 transitions, 1437 flow [2023-08-31 22:47:24,259 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:47:24,259 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 506 places, 540 transitions, 1437 flow [2023-08-31 22:47:24,259 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 506 places, 540 transitions, 1437 flow [2023-08-31 22:47:24,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 506 places, 540 transitions, 1437 flow [2023-08-31 22:47:24,411 INFO L130 PetriNetUnfolder]: 86/827 cut-off events. [2023-08-31 22:47:24,411 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 22:47:24,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 827 events. 86/827 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3028 event pairs, 0 based on Foata normal form. 0/652 useless extension candidates. Maximal degree in co-relation 955. Up to 36 conditions per place. [2023-08-31 22:47:24,466 INFO L119 LiptonReduction]: Number of co-enabled transitions 254388 [2023-08-31 22:47:35,626 INFO L134 LiptonReduction]: Checked pairs total: 245733 [2023-08-31 22:47:35,626 INFO L136 LiptonReduction]: Total number of compositions: 614 [2023-08-31 22:47:35,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:47:35,627 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:47:35,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:47:35,642 INFO L130 PetriNetUnfolder]: 5/203 cut-off events. [2023-08-31 22:47:35,642 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 22:47:35,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:47:35,642 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:47:35,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:47:35,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:47:35,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1006255698, now seen corresponding path program 1 times [2023-08-31 22:47:35,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:47:35,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550602945] [2023-08-31 22:47:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:47:35,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:47:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:47:35,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:47:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:47:35,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:47:35,700 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:47:35,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:47:35,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 22:47:35,700 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:47:35,700 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:47:35,700 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:47:35,700 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-08-31 22:47:35,731 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:47:35,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 534 places, 570 transitions, 1536 flow [2023-08-31 22:47:35,920 INFO L130 PetriNetUnfolder]: 91/874 cut-off events. [2023-08-31 22:47:35,920 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 22:47:35,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 874 events. 91/874 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3203 event pairs, 0 based on Foata normal form. 0/689 useless extension candidates. Maximal degree in co-relation 1022. Up to 38 conditions per place. [2023-08-31 22:47:35,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 534 places, 570 transitions, 1536 flow [2023-08-31 22:47:35,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 534 places, 570 transitions, 1536 flow [2023-08-31 22:47:35,946 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:47:35,946 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 534 places, 570 transitions, 1536 flow [2023-08-31 22:47:35,946 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 534 places, 570 transitions, 1536 flow [2023-08-31 22:47:35,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 534 places, 570 transitions, 1536 flow [2023-08-31 22:47:36,084 INFO L130 PetriNetUnfolder]: 91/874 cut-off events. [2023-08-31 22:47:36,084 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 22:47:36,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 874 events. 91/874 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3203 event pairs, 0 based on Foata normal form. 0/689 useless extension candidates. Maximal degree in co-relation 1022. Up to 38 conditions per place. [2023-08-31 22:47:36,154 INFO L119 LiptonReduction]: Number of co-enabled transitions 285012 [2023-08-31 22:47:48,163 INFO L134 LiptonReduction]: Checked pairs total: 283276 [2023-08-31 22:47:48,163 INFO L136 LiptonReduction]: Total number of compositions: 644 [2023-08-31 22:47:48,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:47:48,165 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:47:48,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:47:48,179 INFO L130 PetriNetUnfolder]: 5/214 cut-off events. [2023-08-31 22:47:48,179 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 22:47:48,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:47:48,179 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:47:48,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:47:48,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:47:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1724120504, now seen corresponding path program 1 times [2023-08-31 22:47:48,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:47:48,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373021537] [2023-08-31 22:47:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:47:48,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:47:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:47:48,199 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:47:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:47:48,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:47:48,219 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:47:48,219 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:47:48,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 22:47:48,219 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:47:48,220 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:47:48,220 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:47:48,221 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-08-31 22:47:48,259 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:47:48,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 562 places, 600 transitions, 1637 flow [2023-08-31 22:47:48,423 INFO L130 PetriNetUnfolder]: 96/921 cut-off events. [2023-08-31 22:47:48,423 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 22:47:48,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 921 events. 96/921 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3386 event pairs, 0 based on Foata normal form. 0/726 useless extension candidates. Maximal degree in co-relation 1090. Up to 40 conditions per place. [2023-08-31 22:47:48,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 562 places, 600 transitions, 1637 flow [2023-08-31 22:47:48,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 562 places, 600 transitions, 1637 flow [2023-08-31 22:47:48,450 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:47:48,450 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 562 places, 600 transitions, 1637 flow [2023-08-31 22:47:48,450 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 562 places, 600 transitions, 1637 flow [2023-08-31 22:47:48,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 562 places, 600 transitions, 1637 flow [2023-08-31 22:47:48,628 INFO L130 PetriNetUnfolder]: 96/921 cut-off events. [2023-08-31 22:47:48,629 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 22:47:48,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 921 events. 96/921 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3386 event pairs, 0 based on Foata normal form. 0/726 useless extension candidates. Maximal degree in co-relation 1090. Up to 40 conditions per place. [2023-08-31 22:47:48,696 INFO L119 LiptonReduction]: Number of co-enabled transitions 317376 [2023-08-31 22:48:00,635 INFO L134 LiptonReduction]: Checked pairs total: 300219 [2023-08-31 22:48:00,636 INFO L136 LiptonReduction]: Total number of compositions: 674 [2023-08-31 22:48:00,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:48:00,637 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:48:00,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:48:00,666 INFO L130 PetriNetUnfolder]: 5/225 cut-off events. [2023-08-31 22:48:00,666 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 22:48:00,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:48:00,674 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:48:00,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:48:00,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:48:00,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1079718604, now seen corresponding path program 1 times [2023-08-31 22:48:00,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:48:00,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842782174] [2023-08-31 22:48:00,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:48:00,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:48:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:48:00,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:48:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:48:00,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:48:00,758 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:48:00,759 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:48:00,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 22:48:00,759 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:48:00,760 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:48:00,760 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:48:00,760 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-08-31 22:48:00,800 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:48:00,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 590 places, 630 transitions, 1740 flow [2023-08-31 22:48:00,978 INFO L130 PetriNetUnfolder]: 101/968 cut-off events. [2023-08-31 22:48:00,978 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 22:48:01,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 968 events. 101/968 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3572 event pairs, 0 based on Foata normal form. 0/763 useless extension candidates. Maximal degree in co-relation 1159. Up to 42 conditions per place. [2023-08-31 22:48:01,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 590 places, 630 transitions, 1740 flow [2023-08-31 22:48:01,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 590 places, 630 transitions, 1740 flow [2023-08-31 22:48:01,009 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:48:01,009 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 590 places, 630 transitions, 1740 flow [2023-08-31 22:48:01,009 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 590 places, 630 transitions, 1740 flow [2023-08-31 22:48:01,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 590 places, 630 transitions, 1740 flow [2023-08-31 22:48:01,184 INFO L130 PetriNetUnfolder]: 101/968 cut-off events. [2023-08-31 22:48:01,185 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 22:48:01,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 968 events. 101/968 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3572 event pairs, 0 based on Foata normal form. 0/763 useless extension candidates. Maximal degree in co-relation 1159. Up to 42 conditions per place. [2023-08-31 22:48:01,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 351480 [2023-08-31 22:48:14,333 INFO L134 LiptonReduction]: Checked pairs total: 346295 [2023-08-31 22:48:14,334 INFO L136 LiptonReduction]: Total number of compositions: 726 [2023-08-31 22:48:14,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:48:14,335 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:48:14,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:48:14,353 INFO L130 PetriNetUnfolder]: 9/244 cut-off events. [2023-08-31 22:48:14,353 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 22:48:14,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:48:14,353 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:48:14,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:48:14,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:48:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash 715708607, now seen corresponding path program 1 times [2023-08-31 22:48:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:48:14,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101079964] [2023-08-31 22:48:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:48:14,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:48:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:48:14,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:48:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:48:14,435 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:48:14,435 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:48:14,435 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:48:14,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 22:48:14,435 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:48:14,435 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:48:14,435 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:48:14,436 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-08-31 22:48:14,470 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:48:14,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 618 places, 660 transitions, 1845 flow [2023-08-31 22:48:14,664 INFO L130 PetriNetUnfolder]: 106/1015 cut-off events. [2023-08-31 22:48:14,665 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 22:48:14,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 1015 events. 106/1015 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3753 event pairs, 0 based on Foata normal form. 0/800 useless extension candidates. Maximal degree in co-relation 1229. Up to 44 conditions per place. [2023-08-31 22:48:14,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 618 places, 660 transitions, 1845 flow [2023-08-31 22:48:14,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 618 places, 660 transitions, 1845 flow [2023-08-31 22:48:14,697 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:48:14,697 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 618 places, 660 transitions, 1845 flow [2023-08-31 22:48:14,697 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 618 places, 660 transitions, 1845 flow [2023-08-31 22:48:14,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 618 places, 660 transitions, 1845 flow [2023-08-31 22:48:14,890 INFO L130 PetriNetUnfolder]: 106/1015 cut-off events. [2023-08-31 22:48:14,890 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 22:48:14,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 1015 events. 106/1015 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3753 event pairs, 0 based on Foata normal form. 0/800 useless extension candidates. Maximal degree in co-relation 1229. Up to 44 conditions per place. [2023-08-31 22:48:15,020 INFO L119 LiptonReduction]: Number of co-enabled transitions 387324 [2023-08-31 22:48:28,749 INFO L134 LiptonReduction]: Checked pairs total: 368371 [2023-08-31 22:48:28,749 INFO L136 LiptonReduction]: Total number of compositions: 750 [2023-08-31 22:48:28,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:48:28,751 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:48:28,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:48:28,770 INFO L130 PetriNetUnfolder]: 6/249 cut-off events. [2023-08-31 22:48:28,770 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 22:48:28,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:48:28,770 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:48:28,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:48:28,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:48:28,770 INFO L85 PathProgramCache]: Analyzing trace with hash 55641757, now seen corresponding path program 1 times [2023-08-31 22:48:28,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:48:28,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035183967] [2023-08-31 22:48:28,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:48:28,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:48:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:48:28,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:48:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:48:28,825 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:48:28,825 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:48:28,826 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:48:28,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 22:48:28,826 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:48:28,826 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:48:28,826 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:48:28,827 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-08-31 22:48:28,895 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:48:28,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 646 places, 690 transitions, 1952 flow [2023-08-31 22:48:29,107 INFO L130 PetriNetUnfolder]: 111/1062 cut-off events. [2023-08-31 22:48:29,108 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 22:48:29,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 1062 events. 111/1062 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3967 event pairs, 0 based on Foata normal form. 0/837 useless extension candidates. Maximal degree in co-relation 1300. Up to 46 conditions per place. [2023-08-31 22:48:29,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 646 places, 690 transitions, 1952 flow [2023-08-31 22:48:29,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 646 places, 690 transitions, 1952 flow [2023-08-31 22:48:29,146 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:48:29,146 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 646 places, 690 transitions, 1952 flow [2023-08-31 22:48:29,146 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 646 places, 690 transitions, 1952 flow [2023-08-31 22:48:29,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 646 places, 690 transitions, 1952 flow [2023-08-31 22:48:29,358 INFO L130 PetriNetUnfolder]: 111/1062 cut-off events. [2023-08-31 22:48:29,358 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 22:48:29,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 1062 events. 111/1062 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3967 event pairs, 0 based on Foata normal form. 0/837 useless extension candidates. Maximal degree in co-relation 1300. Up to 46 conditions per place. [2023-08-31 22:48:29,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 424908 [2023-08-31 22:48:43,568 INFO L134 LiptonReduction]: Checked pairs total: 406730 [2023-08-31 22:48:43,568 INFO L136 LiptonReduction]: Total number of compositions: 788 [2023-08-31 22:48:43,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:48:43,570 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:48:43,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:48:43,590 INFO L130 PetriNetUnfolder]: 5/258 cut-off events. [2023-08-31 22:48:43,590 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 22:48:43,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:48:43,590 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:48:43,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:48:43,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:48:43,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1983786141, now seen corresponding path program 1 times [2023-08-31 22:48:43,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:48:43,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680622455] [2023-08-31 22:48:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:48:43,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:48:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:48:43,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:48:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:48:43,648 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:48:43,648 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:48:43,648 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:48:43,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 22:48:43,649 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:48:43,649 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:48:43,649 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:48:43,649 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-08-31 22:48:43,694 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:48:43,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 674 places, 720 transitions, 2061 flow [2023-08-31 22:48:43,983 INFO L130 PetriNetUnfolder]: 116/1109 cut-off events. [2023-08-31 22:48:43,983 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 22:48:44,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 1109 events. 116/1109 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4183 event pairs, 0 based on Foata normal form. 0/874 useless extension candidates. Maximal degree in co-relation 1372. Up to 48 conditions per place. [2023-08-31 22:48:44,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 674 places, 720 transitions, 2061 flow [2023-08-31 22:48:44,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 674 places, 720 transitions, 2061 flow [2023-08-31 22:48:44,017 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:48:44,017 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 674 places, 720 transitions, 2061 flow [2023-08-31 22:48:44,017 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 674 places, 720 transitions, 2061 flow [2023-08-31 22:48:44,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 674 places, 720 transitions, 2061 flow [2023-08-31 22:48:44,256 INFO L130 PetriNetUnfolder]: 116/1109 cut-off events. [2023-08-31 22:48:44,256 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 22:48:44,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 1109 events. 116/1109 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4183 event pairs, 0 based on Foata normal form. 0/874 useless extension candidates. Maximal degree in co-relation 1372. Up to 48 conditions per place. [2023-08-31 22:48:44,377 INFO L119 LiptonReduction]: Number of co-enabled transitions 464232 [2023-08-31 22:48:59,145 INFO L134 LiptonReduction]: Checked pairs total: 463407 [2023-08-31 22:48:59,145 INFO L136 LiptonReduction]: Total number of compositions: 824 [2023-08-31 22:48:59,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:48:59,146 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:48:59,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:48:59,168 INFO L130 PetriNetUnfolder]: 9/277 cut-off events. [2023-08-31 22:48:59,168 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 22:48:59,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:48:59,169 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:48:59,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:48:59,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:48:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1142125431, now seen corresponding path program 1 times [2023-08-31 22:48:59,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:48:59,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257169073] [2023-08-31 22:48:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:48:59,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:48:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:48:59,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:48:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:48:59,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:48:59,228 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:48:59,228 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:48:59,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-31 22:48:59,228 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:48:59,228 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:48:59,228 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:48:59,228 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-08-31 22:48:59,268 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:48:59,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 702 places, 750 transitions, 2172 flow [2023-08-31 22:48:59,523 INFO L130 PetriNetUnfolder]: 121/1156 cut-off events. [2023-08-31 22:48:59,523 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 22:48:59,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 1156 events. 121/1156 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4297 event pairs, 0 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 1445. Up to 50 conditions per place. [2023-08-31 22:48:59,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 702 places, 750 transitions, 2172 flow [2023-08-31 22:48:59,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 702 places, 750 transitions, 2172 flow [2023-08-31 22:48:59,568 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:48:59,568 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 702 places, 750 transitions, 2172 flow [2023-08-31 22:48:59,568 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 702 places, 750 transitions, 2172 flow [2023-08-31 22:48:59,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 702 places, 750 transitions, 2172 flow [2023-08-31 22:48:59,832 INFO L130 PetriNetUnfolder]: 121/1156 cut-off events. [2023-08-31 22:48:59,832 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 22:48:59,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 1156 events. 121/1156 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4297 event pairs, 0 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 1445. Up to 50 conditions per place. [2023-08-31 22:48:59,957 INFO L119 LiptonReduction]: Number of co-enabled transitions 505296 [2023-08-31 22:49:15,742 INFO L134 LiptonReduction]: Checked pairs total: 510067 [2023-08-31 22:49:15,742 INFO L136 LiptonReduction]: Total number of compositions: 860 [2023-08-31 22:49:15,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:49:15,744 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:49:15,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:49:15,767 INFO L130 PetriNetUnfolder]: 10/290 cut-off events. [2023-08-31 22:49:15,767 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 22:49:15,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:49:15,767 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:49:15,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:49:15,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:49:15,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2130757524, now seen corresponding path program 1 times [2023-08-31 22:49:15,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:49:15,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922925204] [2023-08-31 22:49:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:49:15,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:49:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:49:15,795 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:49:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:49:15,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:49:15,820 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:49:15,820 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:49:15,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 22:49:15,820 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:49:15,820 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:49:15,820 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:49:15,820 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-08-31 22:49:15,866 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:49:15,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 730 places, 780 transitions, 2285 flow [2023-08-31 22:49:16,175 INFO L130 PetriNetUnfolder]: 126/1203 cut-off events. [2023-08-31 22:49:16,175 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 22:49:16,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 1203 events. 126/1203 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4492 event pairs, 0 based on Foata normal form. 0/948 useless extension candidates. Maximal degree in co-relation 1519. Up to 52 conditions per place. [2023-08-31 22:49:16,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 730 places, 780 transitions, 2285 flow [2023-08-31 22:49:16,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 730 places, 780 transitions, 2285 flow [2023-08-31 22:49:16,217 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:49:16,217 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 730 places, 780 transitions, 2285 flow [2023-08-31 22:49:16,217 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 730 places, 780 transitions, 2285 flow [2023-08-31 22:49:16,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 730 places, 780 transitions, 2285 flow [2023-08-31 22:49:16,488 INFO L130 PetriNetUnfolder]: 126/1203 cut-off events. [2023-08-31 22:49:16,489 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 22:49:16,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 1203 events. 126/1203 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4492 event pairs, 0 based on Foata normal form. 0/948 useless extension candidates. Maximal degree in co-relation 1519. Up to 52 conditions per place. [2023-08-31 22:49:16,631 INFO L119 LiptonReduction]: Number of co-enabled transitions 548100 [2023-08-31 22:49:33,433 INFO L134 LiptonReduction]: Checked pairs total: 522402 [2023-08-31 22:49:33,433 INFO L136 LiptonReduction]: Total number of compositions: 885 [2023-08-31 22:49:33,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:49:33,435 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:49:33,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:49:33,459 INFO L130 PetriNetUnfolder]: 5/291 cut-off events. [2023-08-31 22:49:33,459 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 22:49:33,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:49:33,459 INFO L208 CegarLoopForPetriNet]: trace histogram [26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:49:33,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:49:33,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:49:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1095115093, now seen corresponding path program 1 times [2023-08-31 22:49:33,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:49:33,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065138763] [2023-08-31 22:49:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:49:33,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:49:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:49:33,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:49:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:49:33,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:49:33,511 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:49:33,511 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:49:33,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-31 22:49:33,511 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:49:33,511 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:49:33,512 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:49:33,512 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-08-31 22:49:33,555 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:49:33,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 758 places, 810 transitions, 2400 flow [2023-08-31 22:49:33,909 INFO L130 PetriNetUnfolder]: 131/1250 cut-off events. [2023-08-31 22:49:33,909 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 22:49:33,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 1250 events. 131/1250 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4693 event pairs, 0 based on Foata normal form. 0/985 useless extension candidates. Maximal degree in co-relation 1594. Up to 54 conditions per place. [2023-08-31 22:49:33,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 758 places, 810 transitions, 2400 flow [2023-08-31 22:49:33,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 758 places, 810 transitions, 2400 flow [2023-08-31 22:49:33,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:49:33,953 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 758 places, 810 transitions, 2400 flow [2023-08-31 22:49:33,953 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 758 places, 810 transitions, 2400 flow [2023-08-31 22:49:33,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 758 places, 810 transitions, 2400 flow [2023-08-31 22:49:34,249 INFO L130 PetriNetUnfolder]: 131/1250 cut-off events. [2023-08-31 22:49:34,249 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 22:49:34,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 1250 events. 131/1250 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4693 event pairs, 0 based on Foata normal form. 0/985 useless extension candidates. Maximal degree in co-relation 1594. Up to 54 conditions per place. [2023-08-31 22:49:34,409 INFO L119 LiptonReduction]: Number of co-enabled transitions 592644 [2023-08-31 22:49:51,487 INFO L134 LiptonReduction]: Checked pairs total: 582109 [2023-08-31 22:49:51,487 INFO L136 LiptonReduction]: Total number of compositions: 921 [2023-08-31 22:49:51,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:49:51,488 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:49:51,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:49:51,516 INFO L130 PetriNetUnfolder]: 9/310 cut-off events. [2023-08-31 22:49:51,516 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 22:49:51,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:49:51,516 INFO L208 CegarLoopForPetriNet]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:49:51,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:49:51,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:49:51,517 INFO L85 PathProgramCache]: Analyzing trace with hash 705747261, now seen corresponding path program 1 times [2023-08-31 22:49:51,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:49:51,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786339708] [2023-08-31 22:49:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:49:51,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:49:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:49:51,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:49:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:49:51,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:49:51,571 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:49:51,571 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:49:51,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-31 22:49:51,571 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:49:51,571 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:49:51,572 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:49:51,572 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-08-31 22:49:51,622 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:49:51,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 786 places, 840 transitions, 2517 flow [2023-08-31 22:49:51,965 INFO L130 PetriNetUnfolder]: 136/1297 cut-off events. [2023-08-31 22:49:51,965 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 22:49:52,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 1297 events. 136/1297 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4866 event pairs, 0 based on Foata normal form. 0/1022 useless extension candidates. Maximal degree in co-relation 1670. Up to 56 conditions per place. [2023-08-31 22:49:52,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 786 places, 840 transitions, 2517 flow [2023-08-31 22:49:52,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 786 places, 840 transitions, 2517 flow [2023-08-31 22:49:52,080 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:49:52,080 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 786 places, 840 transitions, 2517 flow [2023-08-31 22:49:52,080 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 786 places, 840 transitions, 2517 flow [2023-08-31 22:49:52,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 786 places, 840 transitions, 2517 flow [2023-08-31 22:49:52,403 INFO L130 PetriNetUnfolder]: 136/1297 cut-off events. [2023-08-31 22:49:52,403 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 22:49:52,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 1297 events. 136/1297 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 4866 event pairs, 0 based on Foata normal form. 0/1022 useless extension candidates. Maximal degree in co-relation 1670. Up to 56 conditions per place. [2023-08-31 22:49:52,585 INFO L119 LiptonReduction]: Number of co-enabled transitions 638928 [2023-08-31 22:50:11,038 INFO L134 LiptonReduction]: Checked pairs total: 639999 [2023-08-31 22:50:11,038 INFO L136 LiptonReduction]: Total number of compositions: 976 [2023-08-31 22:50:11,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:50:11,039 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:50:11,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:50:11,068 INFO L130 PetriNetUnfolder]: 7/317 cut-off events. [2023-08-31 22:50:11,068 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 22:50:11,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:50:11,068 INFO L208 CegarLoopForPetriNet]: trace histogram [28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:50:11,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:50:11,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:50:11,069 INFO L85 PathProgramCache]: Analyzing trace with hash 294484373, now seen corresponding path program 1 times [2023-08-31 22:50:11,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:50:11,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597343206] [2023-08-31 22:50:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:50:11,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:50:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:50:11,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:50:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:50:11,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:50:11,138 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:50:11,138 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:50:11,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 22:50:11,138 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:50:11,138 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:50:11,138 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:50:11,139 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-08-31 22:50:11,186 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:50:11,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 814 places, 870 transitions, 2636 flow [2023-08-31 22:50:11,582 INFO L130 PetriNetUnfolder]: 141/1344 cut-off events. [2023-08-31 22:50:11,582 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 22:50:11,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1835 conditions, 1344 events. 141/1344 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5045 event pairs, 0 based on Foata normal form. 0/1059 useless extension candidates. Maximal degree in co-relation 1747. Up to 58 conditions per place. [2023-08-31 22:50:11,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 814 places, 870 transitions, 2636 flow [2023-08-31 22:50:11,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 814 places, 870 transitions, 2636 flow [2023-08-31 22:50:11,646 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:50:11,646 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 814 places, 870 transitions, 2636 flow [2023-08-31 22:50:11,646 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 814 places, 870 transitions, 2636 flow [2023-08-31 22:50:11,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 814 places, 870 transitions, 2636 flow [2023-08-31 22:50:12,031 INFO L130 PetriNetUnfolder]: 141/1344 cut-off events. [2023-08-31 22:50:12,031 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 22:50:12,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1835 conditions, 1344 events. 141/1344 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5045 event pairs, 0 based on Foata normal form. 0/1059 useless extension candidates. Maximal degree in co-relation 1747. Up to 58 conditions per place. [2023-08-31 22:50:12,196 INFO L119 LiptonReduction]: Number of co-enabled transitions 686952 [2023-08-31 22:50:30,258 INFO L134 LiptonReduction]: Checked pairs total: 656571 [2023-08-31 22:50:30,258 INFO L136 LiptonReduction]: Total number of compositions: 986 [2023-08-31 22:50:30,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:50:30,260 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:50:30,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:50:30,290 INFO L130 PetriNetUnfolder]: 7/328 cut-off events. [2023-08-31 22:50:30,290 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 22:50:30,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:50:30,290 INFO L208 CegarLoopForPetriNet]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:50:30,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:50:30,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:50:30,291 INFO L85 PathProgramCache]: Analyzing trace with hash -278429047, now seen corresponding path program 1 times [2023-08-31 22:50:30,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:50:30,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436191701] [2023-08-31 22:50:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:50:30,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:50:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:50:30,317 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:50:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:50:30,346 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:50:30,346 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:50:30,346 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:50:30,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-31 22:50:30,347 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:50:30,347 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:50:30,347 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:50:30,347 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-08-31 22:50:30,408 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:50:30,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 842 places, 900 transitions, 2757 flow [2023-08-31 22:50:30,816 INFO L130 PetriNetUnfolder]: 146/1391 cut-off events. [2023-08-31 22:50:30,816 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 22:50:30,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 1391 events. 146/1391 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5316 event pairs, 0 based on Foata normal form. 0/1096 useless extension candidates. Maximal degree in co-relation 1825. Up to 60 conditions per place. [2023-08-31 22:50:30,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 842 places, 900 transitions, 2757 flow [2023-08-31 22:50:30,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 842 places, 900 transitions, 2757 flow [2023-08-31 22:50:30,875 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:50:30,875 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 842 places, 900 transitions, 2757 flow [2023-08-31 22:50:30,875 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 842 places, 900 transitions, 2757 flow [2023-08-31 22:50:30,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 842 places, 900 transitions, 2757 flow [2023-08-31 22:50:31,302 INFO L130 PetriNetUnfolder]: 146/1391 cut-off events. [2023-08-31 22:50:31,303 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 22:50:31,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 1391 events. 146/1391 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5316 event pairs, 0 based on Foata normal form. 0/1096 useless extension candidates. Maximal degree in co-relation 1825. Up to 60 conditions per place. [2023-08-31 22:50:31,473 INFO L119 LiptonReduction]: Number of co-enabled transitions 736716 [2023-08-31 22:50:49,998 INFO L134 LiptonReduction]: Checked pairs total: 728210 [2023-08-31 22:50:49,998 INFO L136 LiptonReduction]: Total number of compositions: 1030 [2023-08-31 22:50:49,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:50:49,999 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:50:50,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:50:50,057 INFO L130 PetriNetUnfolder]: 16/357 cut-off events. [2023-08-31 22:50:50,057 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 22:50:50,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:50:50,057 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:50:50,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:50:50,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:50:50,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1372109826, now seen corresponding path program 1 times [2023-08-31 22:50:50,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:50:50,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849315826] [2023-08-31 22:50:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:50:50,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:50:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:50:50,086 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:50:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:50:50,116 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:50:50,117 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:50:50,117 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:50:50,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-31 22:50:50,117 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:50:50,118 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:50:50,118 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:50:50,118 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-08-31 22:50:50,178 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:50:50,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 870 places, 930 transitions, 2880 flow [2023-08-31 22:50:50,576 INFO L130 PetriNetUnfolder]: 151/1438 cut-off events. [2023-08-31 22:50:50,577 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 22:50:50,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 1438 events. 151/1438 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5553 event pairs, 0 based on Foata normal form. 0/1133 useless extension candidates. Maximal degree in co-relation 1904. Up to 62 conditions per place. [2023-08-31 22:50:50,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 870 places, 930 transitions, 2880 flow [2023-08-31 22:50:50,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 870 places, 930 transitions, 2880 flow [2023-08-31 22:50:50,653 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:50:50,653 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 870 places, 930 transitions, 2880 flow [2023-08-31 22:50:50,653 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 870 places, 930 transitions, 2880 flow [2023-08-31 22:50:50,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 870 places, 930 transitions, 2880 flow [2023-08-31 22:50:51,083 INFO L130 PetriNetUnfolder]: 151/1438 cut-off events. [2023-08-31 22:50:51,083 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 22:50:51,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 1438 events. 151/1438 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5553 event pairs, 0 based on Foata normal form. 0/1133 useless extension candidates. Maximal degree in co-relation 1904. Up to 62 conditions per place. [2023-08-31 22:50:51,276 INFO L119 LiptonReduction]: Number of co-enabled transitions 788220 [2023-08-31 22:51:11,150 INFO L134 LiptonReduction]: Checked pairs total: 780596 [2023-08-31 22:51:11,150 INFO L136 LiptonReduction]: Total number of compositions: 1067 [2023-08-31 22:51:11,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:51:11,152 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:51:11,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:51:11,187 INFO L130 PetriNetUnfolder]: 13/362 cut-off events. [2023-08-31 22:51:11,187 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 22:51:11,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:51:11,188 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:51:11,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:51:11,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:51:11,188 INFO L85 PathProgramCache]: Analyzing trace with hash -647512825, now seen corresponding path program 1 times [2023-08-31 22:51:11,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:51:11,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069034757] [2023-08-31 22:51:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:51:11,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:51:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:51:11,228 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:51:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:51:11,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:51:11,263 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:51:11,263 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:51:11,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-31 22:51:11,264 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:51:11,264 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:51:11,264 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:51:11,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-08-31 22:51:11,320 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:51:11,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 898 places, 960 transitions, 3005 flow [2023-08-31 22:51:11,746 INFO L130 PetriNetUnfolder]: 156/1485 cut-off events. [2023-08-31 22:51:11,746 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 22:51:11,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 1485 events. 156/1485 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5698 event pairs, 0 based on Foata normal form. 0/1170 useless extension candidates. Maximal degree in co-relation 1984. Up to 64 conditions per place. [2023-08-31 22:51:11,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 898 places, 960 transitions, 3005 flow [2023-08-31 22:51:11,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 898 places, 960 transitions, 3005 flow [2023-08-31 22:51:11,829 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:51:11,829 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 898 places, 960 transitions, 3005 flow [2023-08-31 22:51:11,830 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 898 places, 960 transitions, 3005 flow [2023-08-31 22:51:11,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 898 places, 960 transitions, 3005 flow [2023-08-31 22:51:12,265 INFO L130 PetriNetUnfolder]: 156/1485 cut-off events. [2023-08-31 22:51:12,265 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 22:51:12,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 1485 events. 156/1485 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5698 event pairs, 0 based on Foata normal form. 0/1170 useless extension candidates. Maximal degree in co-relation 1984. Up to 64 conditions per place. [2023-08-31 22:51:12,497 INFO L119 LiptonReduction]: Number of co-enabled transitions 841464 [2023-08-31 22:51:33,217 INFO L134 LiptonReduction]: Checked pairs total: 834646 [2023-08-31 22:51:33,217 INFO L136 LiptonReduction]: Total number of compositions: 1106 [2023-08-31 22:51:33,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:51:33,219 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:51:33,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:51:33,255 INFO L130 PetriNetUnfolder]: 9/365 cut-off events. [2023-08-31 22:51:33,255 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 22:51:33,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:51:33,255 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:51:33,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:51:33,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:51:33,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1069315680, now seen corresponding path program 1 times [2023-08-31 22:51:33,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:51:33,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064884233] [2023-08-31 22:51:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:51:33,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:51:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:51:33,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:51:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:51:33,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:51:33,319 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:51:33,319 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:51:33,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-31 22:51:33,319 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:51:33,319 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:51:33,320 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:51:33,320 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-08-31 22:51:33,386 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:51:33,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 926 places, 990 transitions, 3132 flow [2023-08-31 22:51:33,865 INFO L130 PetriNetUnfolder]: 161/1532 cut-off events. [2023-08-31 22:51:33,865 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 22:51:33,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 1532 events. 161/1532 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5908 event pairs, 0 based on Foata normal form. 0/1207 useless extension candidates. Maximal degree in co-relation 2065. Up to 66 conditions per place. [2023-08-31 22:51:33,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 926 places, 990 transitions, 3132 flow [2023-08-31 22:51:33,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 926 places, 990 transitions, 3132 flow [2023-08-31 22:51:33,941 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:51:33,941 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 926 places, 990 transitions, 3132 flow [2023-08-31 22:51:33,941 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 926 places, 990 transitions, 3132 flow [2023-08-31 22:51:33,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 926 places, 990 transitions, 3132 flow [2023-08-31 22:51:34,449 INFO L130 PetriNetUnfolder]: 161/1532 cut-off events. [2023-08-31 22:51:34,449 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 22:51:34,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 1532 events. 161/1532 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 5908 event pairs, 0 based on Foata normal form. 0/1207 useless extension candidates. Maximal degree in co-relation 2065. Up to 66 conditions per place. [2023-08-31 22:51:34,662 INFO L119 LiptonReduction]: Number of co-enabled transitions 896448 [2023-08-31 22:51:55,715 INFO L134 LiptonReduction]: Checked pairs total: 863280 [2023-08-31 22:51:55,715 INFO L136 LiptonReduction]: Total number of compositions: 1119 [2023-08-31 22:51:55,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:51:55,717 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:51:55,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:51:55,755 INFO L130 PetriNetUnfolder]: 11/380 cut-off events. [2023-08-31 22:51:55,755 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 22:51:55,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:51:55,756 INFO L208 CegarLoopForPetriNet]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:51:55,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:51:55,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:51:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash 510262140, now seen corresponding path program 1 times [2023-08-31 22:51:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:51:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933800597] [2023-08-31 22:51:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:51:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:51:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:51:55,786 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:51:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:51:55,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:51:55,819 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:51:55,819 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:51:55,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-31 22:51:55,819 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:51:55,820 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:51:55,820 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:51:55,820 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-08-31 22:51:55,881 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:51:55,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 954 places, 1020 transitions, 3261 flow [2023-08-31 22:51:56,396 INFO L130 PetriNetUnfolder]: 166/1579 cut-off events. [2023-08-31 22:51:56,396 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 22:51:56,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2240 conditions, 1579 events. 166/1579 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6110 event pairs, 0 based on Foata normal form. 0/1244 useless extension candidates. Maximal degree in co-relation 2147. Up to 68 conditions per place. [2023-08-31 22:51:56,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 954 places, 1020 transitions, 3261 flow [2023-08-31 22:51:56,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 954 places, 1020 transitions, 3261 flow [2023-08-31 22:51:56,490 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:51:56,490 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 954 places, 1020 transitions, 3261 flow [2023-08-31 22:51:56,490 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 954 places, 1020 transitions, 3261 flow [2023-08-31 22:51:56,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 954 places, 1020 transitions, 3261 flow [2023-08-31 22:51:56,986 INFO L130 PetriNetUnfolder]: 166/1579 cut-off events. [2023-08-31 22:51:56,987 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 22:51:57,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2240 conditions, 1579 events. 166/1579 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6110 event pairs, 0 based on Foata normal form. 0/1244 useless extension candidates. Maximal degree in co-relation 2147. Up to 68 conditions per place. [2023-08-31 22:51:57,235 INFO L119 LiptonReduction]: Number of co-enabled transitions 953172 [2023-08-31 22:52:18,888 INFO L134 LiptonReduction]: Checked pairs total: 926339 [2023-08-31 22:52:18,888 INFO L136 LiptonReduction]: Total number of compositions: 1155 [2023-08-31 22:52:18,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:52:18,889 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:52:18,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:52:18,929 INFO L130 PetriNetUnfolder]: 10/389 cut-off events. [2023-08-31 22:52:18,929 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 22:52:18,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:52:18,929 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:52:18,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:52:18,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:52:18,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1941923411, now seen corresponding path program 1 times [2023-08-31 22:52:18,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:52:18,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943904681] [2023-08-31 22:52:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:52:18,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:52:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:52:18,966 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:52:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:52:19,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:52:19,000 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:52:19,000 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:52:19,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-31 22:52:19,000 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:52:19,001 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:52:19,001 WARN L233 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:52:19,001 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2023-08-31 22:52:19,063 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:52:19,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 982 places, 1050 transitions, 3392 flow [2023-08-31 22:52:19,632 INFO L130 PetriNetUnfolder]: 171/1626 cut-off events. [2023-08-31 22:52:19,632 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 22:52:19,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2324 conditions, 1626 events. 171/1626 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6244 event pairs, 0 based on Foata normal form. 0/1281 useless extension candidates. Maximal degree in co-relation 2230. Up to 70 conditions per place. [2023-08-31 22:52:19,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 982 places, 1050 transitions, 3392 flow [2023-08-31 22:52:19,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 982 places, 1050 transitions, 3392 flow [2023-08-31 22:52:19,714 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:52:19,714 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 982 places, 1050 transitions, 3392 flow [2023-08-31 22:52:19,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 982 places, 1050 transitions, 3392 flow [2023-08-31 22:52:19,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 982 places, 1050 transitions, 3392 flow [2023-08-31 22:52:20,272 INFO L130 PetriNetUnfolder]: 171/1626 cut-off events. [2023-08-31 22:52:20,273 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 22:52:20,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2324 conditions, 1626 events. 171/1626 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6244 event pairs, 0 based on Foata normal form. 0/1281 useless extension candidates. Maximal degree in co-relation 2230. Up to 70 conditions per place. [2023-08-31 22:52:20,615 INFO L119 LiptonReduction]: Number of co-enabled transitions 1011636 [2023-08-31 22:52:43,023 INFO L134 LiptonReduction]: Checked pairs total: 986819 [2023-08-31 22:52:43,023 INFO L136 LiptonReduction]: Total number of compositions: 1199 [2023-08-31 22:52:43,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:52:43,025 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:52:43,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:52:43,067 INFO L130 PetriNetUnfolder]: 9/398 cut-off events. [2023-08-31 22:52:43,067 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 22:52:43,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:52:43,067 INFO L208 CegarLoopForPetriNet]: trace histogram [35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:52:43,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:52:43,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:52:43,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1180660711, now seen corresponding path program 1 times [2023-08-31 22:52:43,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:52:43,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184603578] [2023-08-31 22:52:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:52:43,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:52:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:52:43,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:52:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:52:43,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:52:43,136 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:52:43,136 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:52:43,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-31 22:52:43,137 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:52:43,137 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:52:43,137 WARN L233 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:52:43,137 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2023-08-31 22:52:43,200 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:52:43,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1010 places, 1080 transitions, 3525 flow [2023-08-31 22:52:43,785 INFO L130 PetriNetUnfolder]: 176/1673 cut-off events. [2023-08-31 22:52:43,785 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 22:52:43,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 1673 events. 176/1673 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6458 event pairs, 0 based on Foata normal form. 0/1318 useless extension candidates. Maximal degree in co-relation 2314. Up to 72 conditions per place. [2023-08-31 22:52:43,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 1010 places, 1080 transitions, 3525 flow [2023-08-31 22:52:43,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1010 places, 1080 transitions, 3525 flow [2023-08-31 22:52:43,875 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:52:43,876 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1010 places, 1080 transitions, 3525 flow [2023-08-31 22:52:43,876 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1010 places, 1080 transitions, 3525 flow [2023-08-31 22:52:43,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1010 places, 1080 transitions, 3525 flow [2023-08-31 22:52:44,409 INFO L130 PetriNetUnfolder]: 176/1673 cut-off events. [2023-08-31 22:52:44,409 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 22:52:44,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 1673 events. 176/1673 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6458 event pairs, 0 based on Foata normal form. 0/1318 useless extension candidates. Maximal degree in co-relation 2314. Up to 72 conditions per place. [2023-08-31 22:52:44,787 INFO L119 LiptonReduction]: Number of co-enabled transitions 1071840 [2023-08-31 22:53:07,971 INFO L134 LiptonReduction]: Checked pairs total: 1069330 [2023-08-31 22:53:07,971 INFO L136 LiptonReduction]: Total number of compositions: 1240 [2023-08-31 22:53:07,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:53:07,973 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:53:07,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:53:08,018 INFO L130 PetriNetUnfolder]: 11/413 cut-off events. [2023-08-31 22:53:08,018 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 22:53:08,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:53:08,018 INFO L208 CegarLoopForPetriNet]: trace histogram [36, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:53:08,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:53:08,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:53:08,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1203009989, now seen corresponding path program 1 times [2023-08-31 22:53:08,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:53:08,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445362219] [2023-08-31 22:53:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:53:08,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:53:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:53:08,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:53:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:53:08,090 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:53:08,090 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:53:08,090 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:53:08,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-31 22:53:08,091 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:53:08,091 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:53:08,091 WARN L233 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:53:08,091 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2023-08-31 22:53:08,157 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:53:08,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1038 places, 1110 transitions, 3660 flow [2023-08-31 22:53:08,759 INFO L130 PetriNetUnfolder]: 181/1720 cut-off events. [2023-08-31 22:53:08,759 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 22:53:08,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2495 conditions, 1720 events. 181/1720 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6698 event pairs, 0 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 2399. Up to 74 conditions per place. [2023-08-31 22:53:08,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 1038 places, 1110 transitions, 3660 flow [2023-08-31 22:53:08,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1038 places, 1110 transitions, 3660 flow [2023-08-31 22:53:08,855 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:53:08,855 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1038 places, 1110 transitions, 3660 flow [2023-08-31 22:53:08,856 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1038 places, 1110 transitions, 3660 flow [2023-08-31 22:53:08,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1038 places, 1110 transitions, 3660 flow [2023-08-31 22:53:09,426 INFO L130 PetriNetUnfolder]: 181/1720 cut-off events. [2023-08-31 22:53:09,426 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 22:53:09,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2495 conditions, 1720 events. 181/1720 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6698 event pairs, 0 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 2399. Up to 74 conditions per place. [2023-08-31 22:53:09,874 INFO L119 LiptonReduction]: Number of co-enabled transitions 1133784 [2023-08-31 22:53:34,435 INFO L134 LiptonReduction]: Checked pairs total: 1134045 [2023-08-31 22:53:34,435 INFO L136 LiptonReduction]: Total number of compositions: 1270 [2023-08-31 22:53:34,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:53:34,437 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:53:34,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:53:34,485 INFO L130 PetriNetUnfolder]: 13/428 cut-off events. [2023-08-31 22:53:34,485 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 22:53:34,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:53:34,485 INFO L208 CegarLoopForPetriNet]: trace histogram [37, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:53:34,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:53:34,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:53:34,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1010118231, now seen corresponding path program 1 times [2023-08-31 22:53:34,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:53:34,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574024864] [2023-08-31 22:53:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:53:34,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:53:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:53:34,523 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:53:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:53:34,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:53:34,559 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:53:34,560 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:53:34,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-31 22:53:34,560 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:53:34,560 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:53:34,560 WARN L233 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:53:34,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2023-08-31 22:53:34,637 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:53:34,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1066 places, 1140 transitions, 3797 flow [2023-08-31 22:53:35,267 INFO L130 PetriNetUnfolder]: 186/1767 cut-off events. [2023-08-31 22:53:35,267 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 22:53:35,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2582 conditions, 1767 events. 186/1767 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6798 event pairs, 0 based on Foata normal form. 0/1392 useless extension candidates. Maximal degree in co-relation 2485. Up to 76 conditions per place. [2023-08-31 22:53:35,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 1066 places, 1140 transitions, 3797 flow [2023-08-31 22:53:35,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1066 places, 1140 transitions, 3797 flow [2023-08-31 22:53:35,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:53:35,379 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1066 places, 1140 transitions, 3797 flow [2023-08-31 22:53:35,379 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1066 places, 1140 transitions, 3797 flow [2023-08-31 22:53:35,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1066 places, 1140 transitions, 3797 flow [2023-08-31 22:53:36,056 INFO L130 PetriNetUnfolder]: 186/1767 cut-off events. [2023-08-31 22:53:36,057 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 22:53:36,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2582 conditions, 1767 events. 186/1767 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6798 event pairs, 0 based on Foata normal form. 0/1392 useless extension candidates. Maximal degree in co-relation 2485. Up to 76 conditions per place. [2023-08-31 22:53:36,361 INFO L119 LiptonReduction]: Number of co-enabled transitions 1197468 [2023-08-31 22:54:01,244 INFO L134 LiptonReduction]: Checked pairs total: 1173727 [2023-08-31 22:54:01,244 INFO L136 LiptonReduction]: Total number of compositions: 1302 [2023-08-31 22:54:01,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:54:01,246 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:54:01,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:54:01,296 INFO L130 PetriNetUnfolder]: 13/439 cut-off events. [2023-08-31 22:54:01,297 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 22:54:01,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:54:01,297 INFO L208 CegarLoopForPetriNet]: trace histogram [38, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:54:01,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:54:01,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:54:01,297 INFO L85 PathProgramCache]: Analyzing trace with hash -742607791, now seen corresponding path program 1 times [2023-08-31 22:54:01,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:54:01,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237250395] [2023-08-31 22:54:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:54:01,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:54:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:54:01,336 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:54:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:54:01,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:54:01,376 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:54:01,377 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:54:01,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-31 22:54:01,377 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:54:01,377 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:54:01,377 WARN L233 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:54:01,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2023-08-31 22:54:01,448 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:54:01,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1094 places, 1170 transitions, 3936 flow [2023-08-31 22:54:02,108 INFO L130 PetriNetUnfolder]: 191/1814 cut-off events. [2023-08-31 22:54:02,108 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 22:54:02,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2670 conditions, 1814 events. 191/1814 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7053 event pairs, 0 based on Foata normal form. 0/1429 useless extension candidates. Maximal degree in co-relation 2572. Up to 78 conditions per place. [2023-08-31 22:54:02,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 1094 places, 1170 transitions, 3936 flow [2023-08-31 22:54:02,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1094 places, 1170 transitions, 3936 flow [2023-08-31 22:54:02,242 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:54:02,242 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1094 places, 1170 transitions, 3936 flow [2023-08-31 22:54:02,243 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1094 places, 1170 transitions, 3936 flow [2023-08-31 22:54:02,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1094 places, 1170 transitions, 3936 flow [2023-08-31 22:54:02,906 INFO L130 PetriNetUnfolder]: 191/1814 cut-off events. [2023-08-31 22:54:02,906 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 22:54:03,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2670 conditions, 1814 events. 191/1814 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7053 event pairs, 0 based on Foata normal form. 0/1429 useless extension candidates. Maximal degree in co-relation 2572. Up to 78 conditions per place. [2023-08-31 22:54:03,300 INFO L119 LiptonReduction]: Number of co-enabled transitions 1262892 [2023-08-31 22:54:29,513 INFO L134 LiptonReduction]: Checked pairs total: 1256893 [2023-08-31 22:54:29,513 INFO L136 LiptonReduction]: Total number of compositions: 1343 [2023-08-31 22:54:29,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:54:29,515 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:54:29,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:54:29,568 INFO L130 PetriNetUnfolder]: 12/448 cut-off events. [2023-08-31 22:54:29,568 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 22:54:29,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:54:29,568 INFO L208 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:54:29,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:54:29,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:54:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash 875182425, now seen corresponding path program 1 times [2023-08-31 22:54:29,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:54:29,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184245533] [2023-08-31 22:54:29,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:54:29,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:54:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:54:29,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:54:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:54:29,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:54:29,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:54:29,687 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:54:29,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-31 22:54:29,687 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:54:29,688 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:54:29,688 WARN L233 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:54:29,688 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2023-08-31 22:54:29,769 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:54:29,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1122 places, 1200 transitions, 4077 flow [2023-08-31 22:54:30,468 INFO L130 PetriNetUnfolder]: 196/1861 cut-off events. [2023-08-31 22:54:30,468 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 22:54:30,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2759 conditions, 1861 events. 196/1861 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7197 event pairs, 0 based on Foata normal form. 0/1466 useless extension candidates. Maximal degree in co-relation 2660. Up to 80 conditions per place. [2023-08-31 22:54:30,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 1122 places, 1200 transitions, 4077 flow [2023-08-31 22:54:30,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1122 places, 1200 transitions, 4077 flow [2023-08-31 22:54:30,610 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:54:30,610 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1122 places, 1200 transitions, 4077 flow [2023-08-31 22:54:30,610 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1122 places, 1200 transitions, 4077 flow [2023-08-31 22:54:30,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1122 places, 1200 transitions, 4077 flow [2023-08-31 22:54:31,306 INFO L130 PetriNetUnfolder]: 196/1861 cut-off events. [2023-08-31 22:54:31,306 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 22:54:31,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2759 conditions, 1861 events. 196/1861 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7197 event pairs, 0 based on Foata normal form. 0/1466 useless extension candidates. Maximal degree in co-relation 2660. Up to 80 conditions per place. [2023-08-31 22:54:31,692 INFO L119 LiptonReduction]: Number of co-enabled transitions 1330056 [2023-08-31 22:54:58,295 INFO L134 LiptonReduction]: Checked pairs total: 1302772 [2023-08-31 22:54:58,296 INFO L136 LiptonReduction]: Total number of compositions: 1378 [2023-08-31 22:54:58,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:54:58,300 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:54:58,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:54:58,355 INFO L130 PetriNetUnfolder]: 10/455 cut-off events. [2023-08-31 22:54:58,355 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 22:54:58,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:54:58,355 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:54:58,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:54:58,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:54:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash -22793974, now seen corresponding path program 1 times [2023-08-31 22:54:58,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:54:58,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023025121] [2023-08-31 22:54:58,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:54:58,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:54:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:54:58,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:54:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:54:58,437 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:54:58,438 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:54:58,438 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:54:58,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-31 22:54:58,438 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:54:58,438 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:54:58,438 WARN L233 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:54:58,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2023-08-31 22:54:58,518 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:54:58,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1150 places, 1230 transitions, 4220 flow [2023-08-31 22:54:59,266 INFO L130 PetriNetUnfolder]: 201/1908 cut-off events. [2023-08-31 22:54:59,266 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 22:54:59,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2849 conditions, 1908 events. 201/1908 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7366 event pairs, 0 based on Foata normal form. 0/1503 useless extension candidates. Maximal degree in co-relation 2749. Up to 82 conditions per place. [2023-08-31 22:54:59,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 1150 places, 1230 transitions, 4220 flow [2023-08-31 22:54:59,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1150 places, 1230 transitions, 4220 flow [2023-08-31 22:54:59,395 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:54:59,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1150 places, 1230 transitions, 4220 flow [2023-08-31 22:54:59,395 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1150 places, 1230 transitions, 4220 flow [2023-08-31 22:54:59,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1150 places, 1230 transitions, 4220 flow [2023-08-31 22:55:00,113 INFO L130 PetriNetUnfolder]: 201/1908 cut-off events. [2023-08-31 22:55:00,113 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 22:55:00,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2849 conditions, 1908 events. 201/1908 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7366 event pairs, 0 based on Foata normal form. 0/1503 useless extension candidates. Maximal degree in co-relation 2749. Up to 82 conditions per place. [2023-08-31 22:55:00,526 INFO L119 LiptonReduction]: Number of co-enabled transitions 1398960 [2023-08-31 22:55:27,964 INFO L134 LiptonReduction]: Checked pairs total: 1400796 [2023-08-31 22:55:27,964 INFO L136 LiptonReduction]: Total number of compositions: 1408 [2023-08-31 22:55:27,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:55:27,966 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:55:27,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:55:28,026 INFO L130 PetriNetUnfolder]: 14/474 cut-off events. [2023-08-31 22:55:28,026 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 22:55:28,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:55:28,026 INFO L208 CegarLoopForPetriNet]: trace histogram [41, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:55:28,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:55:28,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:55:28,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1900179386, now seen corresponding path program 1 times [2023-08-31 22:55:28,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:55:28,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930350274] [2023-08-31 22:55:28,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:55:28,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:55:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:55:28,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:55:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:55:28,111 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:55:28,111 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:55:28,112 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:55:28,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-31 22:55:28,112 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:55:28,112 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:55:28,112 WARN L233 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:55:28,112 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2023-08-31 22:55:28,186 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:55:28,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1178 places, 1260 transitions, 4365 flow [2023-08-31 22:55:29,029 INFO L130 PetriNetUnfolder]: 206/1955 cut-off events. [2023-08-31 22:55:29,030 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 22:55:29,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2940 conditions, 1955 events. 206/1955 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7522 event pairs, 0 based on Foata normal form. 0/1540 useless extension candidates. Maximal degree in co-relation 2839. Up to 84 conditions per place. [2023-08-31 22:55:29,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 1178 places, 1260 transitions, 4365 flow [2023-08-31 22:55:29,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1178 places, 1260 transitions, 4365 flow [2023-08-31 22:55:29,191 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:55:29,191 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1178 places, 1260 transitions, 4365 flow [2023-08-31 22:55:29,192 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1178 places, 1260 transitions, 4365 flow [2023-08-31 22:55:29,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1178 places, 1260 transitions, 4365 flow [2023-08-31 22:55:29,963 INFO L130 PetriNetUnfolder]: 206/1955 cut-off events. [2023-08-31 22:55:29,963 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 22:55:30,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2940 conditions, 1955 events. 206/1955 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7522 event pairs, 0 based on Foata normal form. 0/1540 useless extension candidates. Maximal degree in co-relation 2839. Up to 84 conditions per place. [2023-08-31 22:55:30,404 INFO L119 LiptonReduction]: Number of co-enabled transitions 1469604 [2023-08-31 22:55:57,722 INFO L134 LiptonReduction]: Checked pairs total: 1440392 [2023-08-31 22:55:57,722 INFO L136 LiptonReduction]: Total number of compositions: 1442 [2023-08-31 22:55:57,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:55:57,723 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:55:57,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:55:57,785 INFO L130 PetriNetUnfolder]: 11/479 cut-off events. [2023-08-31 22:55:57,785 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 22:55:57,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:55:57,785 INFO L208 CegarLoopForPetriNet]: trace histogram [42, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:55:57,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:55:57,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:55:57,786 INFO L85 PathProgramCache]: Analyzing trace with hash -861755174, now seen corresponding path program 1 times [2023-08-31 22:55:57,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:55:57,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459556788] [2023-08-31 22:55:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:55:57,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:55:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:55:57,829 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:55:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:55:57,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:55:57,873 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:55:57,873 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:55:57,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-31 22:55:57,873 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:55:57,873 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:55:57,873 WARN L233 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:55:57,874 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2023-08-31 22:55:57,944 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:55:57,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1206 places, 1290 transitions, 4512 flow [2023-08-31 22:55:58,790 INFO L130 PetriNetUnfolder]: 211/2002 cut-off events. [2023-08-31 22:55:58,791 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 22:55:58,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3032 conditions, 2002 events. 211/2002 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7782 event pairs, 0 based on Foata normal form. 0/1577 useless extension candidates. Maximal degree in co-relation 2930. Up to 86 conditions per place. [2023-08-31 22:55:58,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 1206 places, 1290 transitions, 4512 flow [2023-08-31 22:55:58,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1206 places, 1290 transitions, 4512 flow [2023-08-31 22:55:58,925 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:55:58,925 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1206 places, 1290 transitions, 4512 flow [2023-08-31 22:55:58,925 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1206 places, 1290 transitions, 4512 flow [2023-08-31 22:55:58,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1206 places, 1290 transitions, 4512 flow [2023-08-31 22:55:59,818 INFO L130 PetriNetUnfolder]: 211/2002 cut-off events. [2023-08-31 22:55:59,819 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 22:55:59,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3032 conditions, 2002 events. 211/2002 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7782 event pairs, 0 based on Foata normal form. 0/1577 useless extension candidates. Maximal degree in co-relation 2930. Up to 86 conditions per place. [2023-08-31 22:56:00,209 INFO L119 LiptonReduction]: Number of co-enabled transitions 1541988 [2023-08-31 22:56:28,032 INFO L134 LiptonReduction]: Checked pairs total: 1535616 [2023-08-31 22:56:28,032 INFO L136 LiptonReduction]: Total number of compositions: 1476 [2023-08-31 22:56:28,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:56:28,034 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:56:28,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:56:28,099 INFO L130 PetriNetUnfolder]: 17/502 cut-off events. [2023-08-31 22:56:28,099 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 22:56:28,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:56:28,099 INFO L208 CegarLoopForPetriNet]: trace histogram [43, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:56:28,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:56:28,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:56:28,099 INFO L85 PathProgramCache]: Analyzing trace with hash 364406623, now seen corresponding path program 1 times [2023-08-31 22:56:28,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:56:28,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028826251] [2023-08-31 22:56:28,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:56:28,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:56:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:56:28,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:56:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:56:28,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:56:28,210 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:56:28,210 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:56:28,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-31 22:56:28,210 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:56:28,210 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:56:28,210 WARN L233 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:56:28,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2023-08-31 22:56:28,279 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:56:28,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1234 places, 1320 transitions, 4661 flow [2023-08-31 22:56:29,182 INFO L130 PetriNetUnfolder]: 216/2049 cut-off events. [2023-08-31 22:56:29,182 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 22:56:29,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 2049 events. 216/2049 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7961 event pairs, 0 based on Foata normal form. 0/1614 useless extension candidates. Maximal degree in co-relation 3022. Up to 88 conditions per place. [2023-08-31 22:56:29,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 1234 places, 1320 transitions, 4661 flow [2023-08-31 22:56:29,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1234 places, 1320 transitions, 4661 flow [2023-08-31 22:56:29,362 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:56:29,362 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1234 places, 1320 transitions, 4661 flow [2023-08-31 22:56:29,363 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1234 places, 1320 transitions, 4661 flow [2023-08-31 22:56:29,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1234 places, 1320 transitions, 4661 flow [2023-08-31 22:56:30,267 INFO L130 PetriNetUnfolder]: 216/2049 cut-off events. [2023-08-31 22:56:30,267 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 22:56:30,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 2049 events. 216/2049 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7961 event pairs, 0 based on Foata normal form. 0/1614 useless extension candidates. Maximal degree in co-relation 3022. Up to 88 conditions per place. [2023-08-31 22:56:30,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 1616112 [2023-08-31 22:57:00,200 INFO L134 LiptonReduction]: Checked pairs total: 1564509 [2023-08-31 22:57:00,201 INFO L136 LiptonReduction]: Total number of compositions: 1505 [2023-08-31 22:57:00,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:57:00,202 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;@3eb7c7d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:57:00,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:57:00,274 INFO L130 PetriNetUnfolder]: 15/509 cut-off events. [2023-08-31 22:57:00,274 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 22:57:00,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:57:00,275 INFO L208 CegarLoopForPetriNet]: trace histogram [44, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:57:00,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:57:00,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:57:00,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1456053676, now seen corresponding path program 1 times [2023-08-31 22:57:00,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:57:00,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553658121] [2023-08-31 22:57:00,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:57:00,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:57:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:57:00,336 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:57:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:57:00,386 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:57:00,387 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:57:00,387 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:57:00,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-31 22:57:00,387 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:57:00,389 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:57:00,389 WARN L233 ceAbstractionStarter]: 43 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:57:00,389 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 44 thread instances. [2023-08-31 22:57:00,475 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:57:00,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1262 places, 1350 transitions, 4812 flow [2023-08-31 22:57:01,399 INFO L130 PetriNetUnfolder]: 221/2096 cut-off events. [2023-08-31 22:57:01,400 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 22:57:01,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3219 conditions, 2096 events. 221/2096 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 8160 event pairs, 0 based on Foata normal form. 0/1651 useless extension candidates. Maximal degree in co-relation 3115. Up to 90 conditions per place. [2023-08-31 22:57:01,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 1262 places, 1350 transitions, 4812 flow [2023-08-31 22:57:01,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1262 places, 1350 transitions, 4812 flow [2023-08-31 22:57:01,569 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:57:01,569 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1262 places, 1350 transitions, 4812 flow [2023-08-31 22:57:01,569 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1262 places, 1350 transitions, 4812 flow [2023-08-31 22:57:01,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1262 places, 1350 transitions, 4812 flow [2023-08-31 22:57:02,489 INFO L130 PetriNetUnfolder]: 221/2096 cut-off events. [2023-08-31 22:57:02,489 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 22:57:02,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3219 conditions, 2096 events. 221/2096 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 8160 event pairs, 0 based on Foata normal form. 0/1651 useless extension candidates. Maximal degree in co-relation 3115. Up to 90 conditions per place. [2023-08-31 22:57:02,961 INFO L119 LiptonReduction]: Number of co-enabled transitions 1691976 Killed by 15