./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_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/48_ticket_lock_low_contention_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 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --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 23:01:16,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:01:16,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:01:16,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:01:16,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:01:16,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:01:16,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:01:16,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:01:16,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:01:16,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:01:16,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:01:16,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:01:16,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:01:16,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:01:16,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:01:16,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:01:16,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:01:16,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:01:16,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:01:16,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:01:16,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:01:16,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:01:16,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:01:16,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:01:16,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:01:16,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:01:16,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:01:16,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:01:16,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:01:16,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:01:16,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:01:16,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:01:16,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:01:16,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:01:16,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:01:16,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:01:16,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:01:16,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:01:16,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:01:16,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:01:16,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:01:16,916 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:01:16,947 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:01:16,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:01:16,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:01:16,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:01:16,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:01:16,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:01:16,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:01:16,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:01:16,950 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:01:16,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:01:16,951 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:01:16,952 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:01:16,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:01:16,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:01:16,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:01:16,952 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:01:16,953 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:01:16,953 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:01:16,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:01:16,953 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:01:16,953 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:01:16,953 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:01:16,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:01:16,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:01:16,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:01:16,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:01:16,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:01:16,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:01:16,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:01:16,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:01:16,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:01:16,955 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:01:16,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:01:16,956 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:01:16,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:01:17,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:01:17,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:01:17,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:01:17,273 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:01:17,273 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:01:17,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs.i [2023-08-31 23:01:18,340 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:01:18,595 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:01:18,595 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs.i [2023-08-31 23:01:18,611 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03564e95e/b4f276aae6d84c42b2f8445ddc9f7c6a/FLAG07b161eb0 [2023-08-31 23:01:18,622 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03564e95e/b4f276aae6d84c42b2f8445ddc9f7c6a [2023-08-31 23:01:18,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:01:18,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:01:18,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:01:18,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:01:18,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:01:18,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:01:18" (1/1) ... [2023-08-31 23:01:18,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d61a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:18, skipping insertion in model container [2023-08-31 23:01:18,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:01:18" (1/1) ... [2023-08-31 23:01:18,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:01:18,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:01:18,854 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 23:01:19,000 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/48_ticket_lock_low_contention_vs.i[30893,30906] [2023-08-31 23:01:19,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:01:19,019 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:01:19,035 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 23:01:19,059 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/48_ticket_lock_low_contention_vs.i[30893,30906] [2023-08-31 23:01:19,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:01:19,156 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:01:19,156 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:01:19,156 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:01:19,162 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:01:19,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19 WrapperNode [2023-08-31 23:01:19,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:01:19,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:01:19,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:01:19,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:01:19,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19" (1/1) ... [2023-08-31 23:01:19,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19" (1/1) ... [2023-08-31 23:01:19,223 INFO L138 Inliner]: procedures = 173, calls = 24, calls flagged for inlining = 5, calls inlined = 7, statements flattened = 109 [2023-08-31 23:01:19,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:01:19,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:01:19,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:01:19,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:01:19,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19" (1/1) ... [2023-08-31 23:01:19,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19" (1/1) ... [2023-08-31 23:01:19,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19" (1/1) ... [2023-08-31 23:01:19,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19" (1/1) ... [2023-08-31 23:01:19,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19" (1/1) ... [2023-08-31 23:01:19,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19" (1/1) ... [2023-08-31 23:01:19,262 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19" (1/1) ... [2023-08-31 23:01:19,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19" (1/1) ... [2023-08-31 23:01:19,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:01:19,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:01:19,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:01:19,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:01:19,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19" (1/1) ... [2023-08-31 23:01:19,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:01:19,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:01:19,301 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 23:01:19,326 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 23:01:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 23:01:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-31 23:01:19,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-31 23:01:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:01:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:01:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:01:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:01:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:01:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:01:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:01:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:01:19,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:01:19,345 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 23:01:19,483 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:01:19,485 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:01:19,749 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:01:19,870 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:01:19,870 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-31 23:01:19,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:01:19 BoogieIcfgContainer [2023-08-31 23:01:19,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:01:19,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:01:19,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:01:19,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:01:19,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:01:18" (1/3) ... [2023-08-31 23:01:19,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321191fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:01:19, skipping insertion in model container [2023-08-31 23:01:19,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:01:19" (2/3) ... [2023-08-31 23:01:19,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321191fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:01:19, skipping insertion in model container [2023-08-31 23:01:19,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:01:19" (3/3) ... [2023-08-31 23:01:19,879 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs.i [2023-08-31 23:01:19,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:01:19,893 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-31 23:01:19,894 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:01:19,944 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:19,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 84 transitions, 173 flow [2023-08-31 23:01:20,020 INFO L130 PetriNetUnfolder]: 8/129 cut-off events. [2023-08-31 23:01:20,020 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:01:20,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 129 events. 8/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 311 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-08-31 23:01:20,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 84 transitions, 173 flow [2023-08-31 23:01:20,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 84 transitions, 173 flow [2023-08-31 23:01:20,036 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:20,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 84 transitions, 173 flow [2023-08-31 23:01:20,049 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 84 transitions, 173 flow [2023-08-31 23:01:20,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 84 transitions, 173 flow [2023-08-31 23:01:20,071 INFO L130 PetriNetUnfolder]: 8/129 cut-off events. [2023-08-31 23:01:20,071 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:01:20,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 129 events. 8/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 311 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-08-31 23:01:20,074 INFO L119 LiptonReduction]: Number of co-enabled transitions 2016 [2023-08-31 23:01:21,651 INFO L134 LiptonReduction]: Checked pairs total: 7116 [2023-08-31 23:01:21,652 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-08-31 23:01:21,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:21,669 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:21,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:21,676 INFO L130 PetriNetUnfolder]: 2/25 cut-off events. [2023-08-31 23:01:21,677 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:01:21,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:21,677 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 23:01:21,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:21,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:21,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1029160110, now seen corresponding path program 1 times [2023-08-31 23:01:21,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:21,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025192482] [2023-08-31 23:01:21,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:21,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:21,786 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:21,832 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:21,834 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:21,835 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:21,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:01:21,838 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:21,844 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:21,845 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:21,845 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 23:01:21,884 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:21,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 224 flow [2023-08-31 23:01:21,917 INFO L130 PetriNetUnfolder]: 13/198 cut-off events. [2023-08-31 23:01:21,918 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:01:21,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 198 events. 13/198 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 593 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 130. Up to 6 conditions per place. [2023-08-31 23:01:21,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 106 transitions, 224 flow [2023-08-31 23:01:21,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 106 transitions, 224 flow [2023-08-31 23:01:21,920 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:21,921 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 106 transitions, 224 flow [2023-08-31 23:01:21,921 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 106 transitions, 224 flow [2023-08-31 23:01:21,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 224 flow [2023-08-31 23:01:21,945 INFO L130 PetriNetUnfolder]: 13/198 cut-off events. [2023-08-31 23:01:21,945 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:01:21,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 198 events. 13/198 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 593 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 130. Up to 6 conditions per place. [2023-08-31 23:01:21,950 INFO L119 LiptonReduction]: Number of co-enabled transitions 4956 [2023-08-31 23:01:23,237 INFO L134 LiptonReduction]: Checked pairs total: 19481 [2023-08-31 23:01:23,237 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-31 23:01:23,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:23,240 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:23,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:23,249 INFO L130 PetriNetUnfolder]: 7/74 cut-off events. [2023-08-31 23:01:23,253 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:01:23,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:23,253 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 23:01:23,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:23,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:23,254 INFO L85 PathProgramCache]: Analyzing trace with hash 999848777, now seen corresponding path program 1 times [2023-08-31 23:01:23,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:23,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726738657] [2023-08-31 23:01:23,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:23,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:23,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:23,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:23,293 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:23,293 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:23,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:01:23,293 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:23,294 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:23,294 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:23,294 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 23:01:23,323 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:23,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 277 flow [2023-08-31 23:01:23,349 INFO L130 PetriNetUnfolder]: 18/267 cut-off events. [2023-08-31 23:01:23,350 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 23:01:23,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 267 events. 18/267 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 892 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 202. Up to 8 conditions per place. [2023-08-31 23:01:23,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 128 transitions, 277 flow [2023-08-31 23:01:23,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 128 transitions, 277 flow [2023-08-31 23:01:23,354 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:23,354 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 128 transitions, 277 flow [2023-08-31 23:01:23,354 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 128 transitions, 277 flow [2023-08-31 23:01:23,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 277 flow [2023-08-31 23:01:23,378 INFO L130 PetriNetUnfolder]: 18/267 cut-off events. [2023-08-31 23:01:23,378 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 23:01:23,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 267 events. 18/267 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 892 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 202. Up to 8 conditions per place. [2023-08-31 23:01:23,386 INFO L119 LiptonReduction]: Number of co-enabled transitions 8820 [2023-08-31 23:01:24,676 INFO L134 LiptonReduction]: Checked pairs total: 35053 [2023-08-31 23:01:24,676 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-08-31 23:01:24,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:24,679 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:24,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:24,689 INFO L130 PetriNetUnfolder]: 10/113 cut-off events. [2023-08-31 23:01:24,689 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 23:01:24,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:24,689 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 23:01:24,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:24,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1047334933, now seen corresponding path program 1 times [2023-08-31 23:01:24,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:24,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258701482] [2023-08-31 23:01:24,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:24,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:24,712 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:24,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:24,730 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:24,730 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:24,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:01:24,730 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:24,731 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:24,731 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:24,731 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 23:01:24,765 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:24,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 150 transitions, 332 flow [2023-08-31 23:01:24,805 INFO L130 PetriNetUnfolder]: 23/336 cut-off events. [2023-08-31 23:01:24,805 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 23:01:24,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 336 events. 23/336 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1173 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 275. Up to 10 conditions per place. [2023-08-31 23:01:24,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 150 transitions, 332 flow [2023-08-31 23:01:24,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 150 transitions, 332 flow [2023-08-31 23:01:24,811 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:24,811 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 150 transitions, 332 flow [2023-08-31 23:01:24,811 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 150 transitions, 332 flow [2023-08-31 23:01:24,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 150 transitions, 332 flow [2023-08-31 23:01:24,852 INFO L130 PetriNetUnfolder]: 23/336 cut-off events. [2023-08-31 23:01:24,853 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 23:01:24,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 336 events. 23/336 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1173 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 275. Up to 10 conditions per place. [2023-08-31 23:01:24,865 INFO L119 LiptonReduction]: Number of co-enabled transitions 13608 [2023-08-31 23:01:26,326 INFO L134 LiptonReduction]: Checked pairs total: 59516 [2023-08-31 23:01:26,326 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-31 23:01:26,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:26,328 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:26,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:26,341 INFO L130 PetriNetUnfolder]: 15/158 cut-off events. [2023-08-31 23:01:26,341 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 23:01:26,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:26,342 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 23:01:26,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:26,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:26,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1782974345, now seen corresponding path program 1 times [2023-08-31 23:01:26,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:26,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528775974] [2023-08-31 23:01:26,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:26,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:26,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:26,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:26,384 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:26,384 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:26,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:01:26,384 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:26,385 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:26,385 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:26,385 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 23:01:26,419 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:26,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 172 transitions, 389 flow [2023-08-31 23:01:26,474 INFO L130 PetriNetUnfolder]: 28/405 cut-off events. [2023-08-31 23:01:26,475 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 23:01:26,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 405 events. 28/405 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1469 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 349. Up to 12 conditions per place. [2023-08-31 23:01:26,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 172 transitions, 389 flow [2023-08-31 23:01:26,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 172 transitions, 389 flow [2023-08-31 23:01:26,480 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:26,481 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 172 transitions, 389 flow [2023-08-31 23:01:26,481 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 172 transitions, 389 flow [2023-08-31 23:01:26,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 172 transitions, 389 flow [2023-08-31 23:01:26,521 INFO L130 PetriNetUnfolder]: 28/405 cut-off events. [2023-08-31 23:01:26,521 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 23:01:26,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 405 events. 28/405 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1469 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 349. Up to 12 conditions per place. [2023-08-31 23:01:26,536 INFO L119 LiptonReduction]: Number of co-enabled transitions 19320 [2023-08-31 23:01:28,044 INFO L134 LiptonReduction]: Checked pairs total: 84103 [2023-08-31 23:01:28,044 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-31 23:01:28,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:28,046 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:28,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:28,066 INFO L130 PetriNetUnfolder]: 19/200 cut-off events. [2023-08-31 23:01:28,067 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 23:01:28,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:28,067 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:01:28,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:28,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash 710904240, now seen corresponding path program 1 times [2023-08-31 23:01:28,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:28,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101116708] [2023-08-31 23:01:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:28,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:28,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:28,166 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:28,171 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:28,171 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:28,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:01:28,173 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:28,174 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:28,174 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:28,174 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 23:01:28,222 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:28,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 194 transitions, 448 flow [2023-08-31 23:01:28,272 INFO L130 PetriNetUnfolder]: 33/474 cut-off events. [2023-08-31 23:01:28,272 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 23:01:28,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 474 events. 33/474 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1740 event pairs, 0 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 424. Up to 14 conditions per place. [2023-08-31 23:01:28,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 194 transitions, 448 flow [2023-08-31 23:01:28,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 194 transitions, 448 flow [2023-08-31 23:01:28,284 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:28,284 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 194 transitions, 448 flow [2023-08-31 23:01:28,284 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 194 transitions, 448 flow [2023-08-31 23:01:28,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 194 transitions, 448 flow [2023-08-31 23:01:28,343 INFO L130 PetriNetUnfolder]: 33/474 cut-off events. [2023-08-31 23:01:28,343 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 23:01:28,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 474 events. 33/474 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1740 event pairs, 0 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 424. Up to 14 conditions per place. [2023-08-31 23:01:28,360 INFO L119 LiptonReduction]: Number of co-enabled transitions 25956 [2023-08-31 23:01:29,904 INFO L134 LiptonReduction]: Checked pairs total: 110145 [2023-08-31 23:01:29,905 INFO L136 LiptonReduction]: Total number of compositions: 90 [2023-08-31 23:01:29,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:29,907 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:29,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:29,927 INFO L130 PetriNetUnfolder]: 21/237 cut-off events. [2023-08-31 23:01:29,927 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 23:01:29,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:29,927 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:01:29,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:29,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:29,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1374602831, now seen corresponding path program 1 times [2023-08-31 23:01:29,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:29,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230839250] [2023-08-31 23:01:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:29,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:29,960 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:29,979 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:29,979 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:29,980 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:29,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:01:29,980 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:29,981 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:29,981 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:29,981 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 23:01:30,018 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:30,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 216 transitions, 509 flow [2023-08-31 23:01:30,084 INFO L130 PetriNetUnfolder]: 38/543 cut-off events. [2023-08-31 23:01:30,085 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 23:01:30,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 543 events. 38/543 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2036 event pairs, 0 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 502. Up to 16 conditions per place. [2023-08-31 23:01:30,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 216 transitions, 509 flow [2023-08-31 23:01:30,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 216 transitions, 509 flow [2023-08-31 23:01:30,093 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:30,094 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 216 transitions, 509 flow [2023-08-31 23:01:30,094 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 216 transitions, 509 flow [2023-08-31 23:01:30,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 216 transitions, 509 flow [2023-08-31 23:01:30,169 INFO L130 PetriNetUnfolder]: 38/543 cut-off events. [2023-08-31 23:01:30,169 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 23:01:30,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 543 events. 38/543 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2036 event pairs, 0 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 502. Up to 16 conditions per place. [2023-08-31 23:01:30,186 INFO L119 LiptonReduction]: Number of co-enabled transitions 33516 [2023-08-31 23:01:31,822 INFO L134 LiptonReduction]: Checked pairs total: 152148 [2023-08-31 23:01:31,823 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-08-31 23:01:31,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:31,825 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:31,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:31,861 INFO L130 PetriNetUnfolder]: 27/283 cut-off events. [2023-08-31 23:01:31,862 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 23:01:31,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:31,862 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:01:31,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:31,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash 460220694, now seen corresponding path program 1 times [2023-08-31 23:01:31,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:31,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722030495] [2023-08-31 23:01:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:31,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:31,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:31,943 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:31,943 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:31,944 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:31,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:01:31,944 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:31,945 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:31,945 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:31,945 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 23:01:31,996 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:31,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 238 transitions, 572 flow [2023-08-31 23:01:32,073 INFO L130 PetriNetUnfolder]: 43/612 cut-off events. [2023-08-31 23:01:32,075 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 23:01:32,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 612 events. 43/612 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2310 event pairs, 0 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 581. Up to 18 conditions per place. [2023-08-31 23:01:32,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 238 transitions, 572 flow [2023-08-31 23:01:32,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 238 transitions, 572 flow [2023-08-31 23:01:32,086 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:32,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 238 transitions, 572 flow [2023-08-31 23:01:32,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 238 transitions, 572 flow [2023-08-31 23:01:32,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 238 transitions, 572 flow [2023-08-31 23:01:32,173 INFO L130 PetriNetUnfolder]: 43/612 cut-off events. [2023-08-31 23:01:32,176 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 23:01:32,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 612 events. 43/612 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2310 event pairs, 0 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 581. Up to 18 conditions per place. [2023-08-31 23:01:32,201 INFO L119 LiptonReduction]: Number of co-enabled transitions 42000 [2023-08-31 23:01:33,971 INFO L134 LiptonReduction]: Checked pairs total: 192537 [2023-08-31 23:01:33,971 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-31 23:01:33,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:33,973 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:33,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:34,003 INFO L130 PetriNetUnfolder]: 31/326 cut-off events. [2023-08-31 23:01:34,003 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 23:01:34,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:34,004 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:01:34,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:34,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:34,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2142621750, now seen corresponding path program 1 times [2023-08-31 23:01:34,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:34,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580085032] [2023-08-31 23:01:34,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:34,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:34,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:34,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:34,040 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:34,040 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:34,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:01:34,040 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:34,041 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:34,041 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:34,041 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 23:01:34,083 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:34,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 260 transitions, 637 flow [2023-08-31 23:01:34,179 INFO L130 PetriNetUnfolder]: 48/681 cut-off events. [2023-08-31 23:01:34,179 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 23:01:34,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 681 events. 48/681 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2602 event pairs, 0 based on Foata normal form. 0/498 useless extension candidates. Maximal degree in co-relation 661. Up to 20 conditions per place. [2023-08-31 23:01:34,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 260 transitions, 637 flow [2023-08-31 23:01:34,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 260 transitions, 637 flow [2023-08-31 23:01:34,191 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:34,192 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 260 transitions, 637 flow [2023-08-31 23:01:34,192 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 260 transitions, 637 flow [2023-08-31 23:01:34,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 260 transitions, 637 flow [2023-08-31 23:01:34,277 INFO L130 PetriNetUnfolder]: 48/681 cut-off events. [2023-08-31 23:01:34,278 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 23:01:34,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 681 events. 48/681 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2602 event pairs, 0 based on Foata normal form. 0/498 useless extension candidates. Maximal degree in co-relation 661. Up to 20 conditions per place. [2023-08-31 23:01:34,343 INFO L119 LiptonReduction]: Number of co-enabled transitions 51408 [2023-08-31 23:01:35,998 INFO L134 LiptonReduction]: Checked pairs total: 229072 [2023-08-31 23:01:35,998 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-31 23:01:35,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:36,000 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:36,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:36,034 INFO L130 PetriNetUnfolder]: 33/363 cut-off events. [2023-08-31 23:01:36,035 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 23:01:36,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:36,035 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:01:36,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:36,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:36,036 INFO L85 PathProgramCache]: Analyzing trace with hash -462649473, now seen corresponding path program 1 times [2023-08-31 23:01:36,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:36,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876529043] [2023-08-31 23:01:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:36,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:36,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:36,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:36,075 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:36,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:36,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:01:36,075 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:36,076 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:36,076 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:36,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 23:01:36,122 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:36,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 282 transitions, 704 flow [2023-08-31 23:01:36,229 INFO L130 PetriNetUnfolder]: 53/750 cut-off events. [2023-08-31 23:01:36,229 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 23:01:36,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 750 events. 53/750 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2874 event pairs, 0 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 742. Up to 22 conditions per place. [2023-08-31 23:01:36,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 282 transitions, 704 flow [2023-08-31 23:01:36,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 282 transitions, 704 flow [2023-08-31 23:01:36,246 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:36,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 282 transitions, 704 flow [2023-08-31 23:01:36,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 282 transitions, 704 flow [2023-08-31 23:01:36,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 282 transitions, 704 flow [2023-08-31 23:01:36,357 INFO L130 PetriNetUnfolder]: 53/750 cut-off events. [2023-08-31 23:01:36,358 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 23:01:36,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 750 events. 53/750 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2874 event pairs, 0 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 742. Up to 22 conditions per place. [2023-08-31 23:01:36,396 INFO L119 LiptonReduction]: Number of co-enabled transitions 61740 [2023-08-31 23:01:38,075 INFO L134 LiptonReduction]: Checked pairs total: 289000 [2023-08-31 23:01:38,075 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-31 23:01:38,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:38,077 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:38,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:38,119 INFO L130 PetriNetUnfolder]: 39/409 cut-off events. [2023-08-31 23:01:38,119 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 23:01:38,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:38,120 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:01:38,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:38,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1229902406, now seen corresponding path program 1 times [2023-08-31 23:01:38,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:38,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582326093] [2023-08-31 23:01:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:38,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:38,141 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:38,165 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:38,165 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:38,165 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:38,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:01:38,166 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:38,166 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:38,167 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:38,167 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 23:01:38,224 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:38,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 304 transitions, 773 flow [2023-08-31 23:01:38,333 INFO L130 PetriNetUnfolder]: 58/819 cut-off events. [2023-08-31 23:01:38,333 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 23:01:38,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 819 events. 58/819 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3175 event pairs, 0 based on Foata normal form. 0/598 useless extension candidates. Maximal degree in co-relation 824. Up to 24 conditions per place. [2023-08-31 23:01:38,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 304 transitions, 773 flow [2023-08-31 23:01:38,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 304 transitions, 773 flow [2023-08-31 23:01:38,348 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:38,348 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 304 transitions, 773 flow [2023-08-31 23:01:38,349 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 304 transitions, 773 flow [2023-08-31 23:01:38,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 304 transitions, 773 flow [2023-08-31 23:01:38,475 INFO L130 PetriNetUnfolder]: 58/819 cut-off events. [2023-08-31 23:01:38,476 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 23:01:38,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 819 events. 58/819 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3175 event pairs, 0 based on Foata normal form. 0/598 useless extension candidates. Maximal degree in co-relation 824. Up to 24 conditions per place. [2023-08-31 23:01:38,518 INFO L119 LiptonReduction]: Number of co-enabled transitions 72996 [2023-08-31 23:01:40,629 INFO L134 LiptonReduction]: Checked pairs total: 331802 [2023-08-31 23:01:40,629 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-08-31 23:01:40,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:40,632 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:40,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:40,675 INFO L130 PetriNetUnfolder]: 41/448 cut-off events. [2023-08-31 23:01:40,676 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 23:01:40,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:40,676 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:01:40,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:40,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1627054010, now seen corresponding path program 1 times [2023-08-31 23:01:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:40,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424832445] [2023-08-31 23:01:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:40,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:40,718 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:40,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:40,737 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:40,737 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:40,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:01:40,737 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:40,738 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:40,738 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:40,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 23:01:40,796 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:40,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 326 transitions, 844 flow [2023-08-31 23:01:40,942 INFO L130 PetriNetUnfolder]: 63/888 cut-off events. [2023-08-31 23:01:40,942 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 23:01:40,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 888 events. 63/888 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3462 event pairs, 0 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 907. Up to 26 conditions per place. [2023-08-31 23:01:40,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 326 transitions, 844 flow [2023-08-31 23:01:40,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 326 transitions, 844 flow [2023-08-31 23:01:40,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:40,964 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 326 transitions, 844 flow [2023-08-31 23:01:40,965 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 326 transitions, 844 flow [2023-08-31 23:01:40,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 326 transitions, 844 flow [2023-08-31 23:01:41,122 INFO L130 PetriNetUnfolder]: 63/888 cut-off events. [2023-08-31 23:01:41,122 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 23:01:41,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 888 events. 63/888 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3462 event pairs, 0 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 907. Up to 26 conditions per place. [2023-08-31 23:01:41,174 INFO L119 LiptonReduction]: Number of co-enabled transitions 85176 [2023-08-31 23:01:43,041 INFO L134 LiptonReduction]: Checked pairs total: 398421 [2023-08-31 23:01:43,041 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-08-31 23:01:43,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:43,043 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:43,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:43,094 INFO L130 PetriNetUnfolder]: 45/490 cut-off events. [2023-08-31 23:01:43,094 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 23:01:43,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:43,095 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 23:01:43,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:43,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:43,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1265779189, now seen corresponding path program 1 times [2023-08-31 23:01:43,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:43,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464132127] [2023-08-31 23:01:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:43,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:43,141 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:43,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:43,163 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:43,164 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:43,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:01:43,164 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:43,165 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:43,165 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:43,165 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 23:01:43,227 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:43,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 348 transitions, 917 flow [2023-08-31 23:01:43,378 INFO L130 PetriNetUnfolder]: 68/957 cut-off events. [2023-08-31 23:01:43,378 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 23:01:43,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 957 events. 68/957 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3748 event pairs, 0 based on Foata normal form. 0/698 useless extension candidates. Maximal degree in co-relation 991. Up to 28 conditions per place. [2023-08-31 23:01:43,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 346 places, 348 transitions, 917 flow [2023-08-31 23:01:43,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 346 places, 348 transitions, 917 flow [2023-08-31 23:01:43,404 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:43,404 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 346 places, 348 transitions, 917 flow [2023-08-31 23:01:43,405 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 346 places, 348 transitions, 917 flow [2023-08-31 23:01:43,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 348 transitions, 917 flow [2023-08-31 23:01:43,576 INFO L130 PetriNetUnfolder]: 68/957 cut-off events. [2023-08-31 23:01:43,577 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 23:01:43,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 957 events. 68/957 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3748 event pairs, 0 based on Foata normal form. 0/698 useless extension candidates. Maximal degree in co-relation 991. Up to 28 conditions per place. [2023-08-31 23:01:43,630 INFO L119 LiptonReduction]: Number of co-enabled transitions 98280 [2023-08-31 23:01:45,545 INFO L134 LiptonReduction]: Checked pairs total: 451362 [2023-08-31 23:01:45,545 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-08-31 23:01:45,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:45,547 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:45,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:45,610 INFO L130 PetriNetUnfolder]: 49/532 cut-off events. [2023-08-31 23:01:45,611 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 23:01:45,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:45,611 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 23:01:45,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:45,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:45,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1212778703, now seen corresponding path program 1 times [2023-08-31 23:01:45,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:45,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780528322] [2023-08-31 23:01:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:45,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:45,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:45,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:45,693 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:45,693 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:45,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 23:01:45,694 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:45,695 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:45,695 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:45,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-31 23:01:45,760 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:45,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 368 places, 370 transitions, 992 flow [2023-08-31 23:01:45,938 INFO L130 PetriNetUnfolder]: 73/1026 cut-off events. [2023-08-31 23:01:45,939 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 23:01:45,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174 conditions, 1026 events. 73/1026 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4039 event pairs, 0 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 1076. Up to 30 conditions per place. [2023-08-31 23:01:45,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 368 places, 370 transitions, 992 flow [2023-08-31 23:01:45,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 368 places, 370 transitions, 992 flow [2023-08-31 23:01:45,970 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:45,970 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 368 places, 370 transitions, 992 flow [2023-08-31 23:01:45,971 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 368 places, 370 transitions, 992 flow [2023-08-31 23:01:45,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 368 places, 370 transitions, 992 flow [2023-08-31 23:01:46,166 INFO L130 PetriNetUnfolder]: 73/1026 cut-off events. [2023-08-31 23:01:46,167 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 23:01:46,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174 conditions, 1026 events. 73/1026 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4039 event pairs, 0 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 1076. Up to 30 conditions per place. [2023-08-31 23:01:46,237 INFO L119 LiptonReduction]: Number of co-enabled transitions 112308 [2023-08-31 23:01:48,310 INFO L134 LiptonReduction]: Checked pairs total: 529655 [2023-08-31 23:01:48,310 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-31 23:01:48,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:48,312 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:48,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:48,375 INFO L130 PetriNetUnfolder]: 54/576 cut-off events. [2023-08-31 23:01:48,376 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 23:01:48,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:48,376 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 23:01:48,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:48,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:48,377 INFO L85 PathProgramCache]: Analyzing trace with hash 688540818, now seen corresponding path program 1 times [2023-08-31 23:01:48,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:48,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282702175] [2023-08-31 23:01:48,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:48,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:48,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:48,461 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:48,461 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:48,461 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:48,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 23:01:48,462 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:48,462 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:48,463 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:48,463 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-08-31 23:01:48,538 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:48,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 392 transitions, 1069 flow [2023-08-31 23:01:48,746 INFO L130 PetriNetUnfolder]: 78/1095 cut-off events. [2023-08-31 23:01:48,746 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 23:01:48,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 1095 events. 78/1095 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4335 event pairs, 0 based on Foata normal form. 0/798 useless extension candidates. Maximal degree in co-relation 1162. Up to 32 conditions per place. [2023-08-31 23:01:48,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 390 places, 392 transitions, 1069 flow [2023-08-31 23:01:48,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 390 places, 392 transitions, 1069 flow [2023-08-31 23:01:48,780 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:48,781 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 390 places, 392 transitions, 1069 flow [2023-08-31 23:01:48,781 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 390 places, 392 transitions, 1069 flow [2023-08-31 23:01:48,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 392 transitions, 1069 flow [2023-08-31 23:01:48,995 INFO L130 PetriNetUnfolder]: 78/1095 cut-off events. [2023-08-31 23:01:48,995 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 23:01:49,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 1095 events. 78/1095 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4335 event pairs, 0 based on Foata normal form. 0/798 useless extension candidates. Maximal degree in co-relation 1162. Up to 32 conditions per place. [2023-08-31 23:01:49,072 INFO L119 LiptonReduction]: Number of co-enabled transitions 127260 [2023-08-31 23:01:51,228 INFO L134 LiptonReduction]: Checked pairs total: 574177 [2023-08-31 23:01:51,229 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-31 23:01:51,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:51,231 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:51,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:51,311 INFO L130 PetriNetUnfolder]: 54/609 cut-off events. [2023-08-31 23:01:51,312 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 23:01:51,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:51,312 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 23:01:51,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:51,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:51,313 INFO L85 PathProgramCache]: Analyzing trace with hash 840184722, now seen corresponding path program 1 times [2023-08-31 23:01:51,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:51,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476844523] [2023-08-31 23:01:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:51,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:51,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:51,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:51,367 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:51,367 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:51,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 23:01:51,368 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:51,368 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:51,368 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:51,368 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-08-31 23:01:51,439 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:51,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 414 transitions, 1148 flow [2023-08-31 23:01:51,689 INFO L130 PetriNetUnfolder]: 83/1164 cut-off events. [2023-08-31 23:01:51,689 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 23:01:51,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 1164 events. 83/1164 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4608 event pairs, 0 based on Foata normal form. 0/848 useless extension candidates. Maximal degree in co-relation 1249. Up to 34 conditions per place. [2023-08-31 23:01:51,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 412 places, 414 transitions, 1148 flow [2023-08-31 23:01:51,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 412 places, 414 transitions, 1148 flow [2023-08-31 23:01:51,719 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:51,720 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 412 places, 414 transitions, 1148 flow [2023-08-31 23:01:51,720 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 412 places, 414 transitions, 1148 flow [2023-08-31 23:01:51,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 414 transitions, 1148 flow [2023-08-31 23:01:51,999 INFO L130 PetriNetUnfolder]: 83/1164 cut-off events. [2023-08-31 23:01:51,999 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 23:01:52,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 1164 events. 83/1164 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4608 event pairs, 0 based on Foata normal form. 0/848 useless extension candidates. Maximal degree in co-relation 1249. Up to 34 conditions per place. [2023-08-31 23:01:52,087 INFO L119 LiptonReduction]: Number of co-enabled transitions 143136 [2023-08-31 23:01:54,257 INFO L134 LiptonReduction]: Checked pairs total: 683957 [2023-08-31 23:01:54,257 INFO L136 LiptonReduction]: Total number of compositions: 175 [2023-08-31 23:01:54,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:54,259 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:54,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:54,327 INFO L130 PetriNetUnfolder]: 61/658 cut-off events. [2023-08-31 23:01:54,328 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 23:01:54,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:54,328 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 23:01:54,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:54,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash -820164897, now seen corresponding path program 1 times [2023-08-31 23:01:54,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:54,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955124351] [2023-08-31 23:01:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:54,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:54,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:54,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:54,390 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:54,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:54,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 23:01:54,390 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:54,391 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:54,391 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:54,391 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-08-31 23:01:54,461 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:54,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 436 transitions, 1229 flow [2023-08-31 23:01:54,708 INFO L130 PetriNetUnfolder]: 88/1233 cut-off events. [2023-08-31 23:01:54,708 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 23:01:54,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 1233 events. 88/1233 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4915 event pairs, 0 based on Foata normal form. 0/898 useless extension candidates. Maximal degree in co-relation 1337. Up to 36 conditions per place. [2023-08-31 23:01:54,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 436 transitions, 1229 flow [2023-08-31 23:01:54,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 434 places, 436 transitions, 1229 flow [2023-08-31 23:01:54,729 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:54,729 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 436 transitions, 1229 flow [2023-08-31 23:01:54,730 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 436 transitions, 1229 flow [2023-08-31 23:01:54,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 436 transitions, 1229 flow [2023-08-31 23:01:54,919 INFO L130 PetriNetUnfolder]: 88/1233 cut-off events. [2023-08-31 23:01:54,920 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 23:01:54,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 1233 events. 88/1233 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4915 event pairs, 0 based on Foata normal form. 0/898 useless extension candidates. Maximal degree in co-relation 1337. Up to 36 conditions per place. [2023-08-31 23:01:55,011 INFO L119 LiptonReduction]: Number of co-enabled transitions 159936 [2023-08-31 23:01:57,161 INFO L134 LiptonReduction]: Checked pairs total: 766997 [2023-08-31 23:01:57,162 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-08-31 23:01:57,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:01:57,163 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:01:57,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:01:57,257 INFO L130 PetriNetUnfolder]: 65/700 cut-off events. [2023-08-31 23:01:57,257 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 23:01:57,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:01:57,257 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 23:01:57,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:01:57,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:01:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1350179366, now seen corresponding path program 1 times [2023-08-31 23:01:57,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:01:57,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984122623] [2023-08-31 23:01:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:01:57,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:01:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:57,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:01:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:01:57,334 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:01:57,335 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:01:57,335 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:01:57,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 23:01:57,335 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:01:57,336 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:01:57,336 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:01:57,336 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-08-31 23:01:57,438 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:01:57,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 458 transitions, 1312 flow [2023-08-31 23:01:57,701 INFO L130 PetriNetUnfolder]: 93/1302 cut-off events. [2023-08-31 23:01:57,701 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 23:01:57,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 1302 events. 93/1302 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5212 event pairs, 0 based on Foata normal form. 0/948 useless extension candidates. Maximal degree in co-relation 1426. Up to 38 conditions per place. [2023-08-31 23:01:57,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 456 places, 458 transitions, 1312 flow [2023-08-31 23:01:57,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 456 places, 458 transitions, 1312 flow [2023-08-31 23:01:57,746 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:01:57,746 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 456 places, 458 transitions, 1312 flow [2023-08-31 23:01:57,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 456 places, 458 transitions, 1312 flow [2023-08-31 23:01:57,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 458 transitions, 1312 flow [2023-08-31 23:01:57,975 INFO L130 PetriNetUnfolder]: 93/1302 cut-off events. [2023-08-31 23:01:57,975 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 23:01:57,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 1302 events. 93/1302 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5212 event pairs, 0 based on Foata normal form. 0/948 useless extension candidates. Maximal degree in co-relation 1426. Up to 38 conditions per place. [2023-08-31 23:01:58,039 INFO L119 LiptonReduction]: Number of co-enabled transitions 177660 [2023-08-31 23:02:00,478 INFO L134 LiptonReduction]: Checked pairs total: 823587 [2023-08-31 23:02:00,478 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-08-31 23:02:00,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:00,480 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:00,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:00,593 INFO L130 PetriNetUnfolder]: 66/736 cut-off events. [2023-08-31 23:02:00,593 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 23:02:00,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:00,594 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 23:02:00,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:00,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:00,594 INFO L85 PathProgramCache]: Analyzing trace with hash -542686305, now seen corresponding path program 1 times [2023-08-31 23:02:00,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:00,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467045890] [2023-08-31 23:02:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:00,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:00,624 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:00,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:00,685 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:00,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:00,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 23:02:00,686 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:00,686 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:00,686 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:00,686 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-08-31 23:02:00,772 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:00,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 478 places, 480 transitions, 1397 flow [2023-08-31 23:02:01,089 INFO L130 PetriNetUnfolder]: 98/1371 cut-off events. [2023-08-31 23:02:01,090 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 23:02:01,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 1371 events. 98/1371 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5488 event pairs, 0 based on Foata normal form. 0/998 useless extension candidates. Maximal degree in co-relation 1516. Up to 40 conditions per place. [2023-08-31 23:02:01,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 478 places, 480 transitions, 1397 flow [2023-08-31 23:02:01,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 478 places, 480 transitions, 1397 flow [2023-08-31 23:02:01,146 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:01,146 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 478 places, 480 transitions, 1397 flow [2023-08-31 23:02:01,146 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 478 places, 480 transitions, 1397 flow [2023-08-31 23:02:01,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 478 places, 480 transitions, 1397 flow [2023-08-31 23:02:01,384 INFO L130 PetriNetUnfolder]: 98/1371 cut-off events. [2023-08-31 23:02:01,384 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 23:02:01,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 1371 events. 98/1371 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5488 event pairs, 0 based on Foata normal form. 0/998 useless extension candidates. Maximal degree in co-relation 1516. Up to 40 conditions per place. [2023-08-31 23:02:01,474 INFO L119 LiptonReduction]: Number of co-enabled transitions 196308 [2023-08-31 23:02:03,872 INFO L134 LiptonReduction]: Checked pairs total: 950728 [2023-08-31 23:02:03,872 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-08-31 23:02:03,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:03,874 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:03,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:03,996 INFO L130 PetriNetUnfolder]: 73/784 cut-off events. [2023-08-31 23:02:03,996 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 23:02:03,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:03,997 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 23:02:03,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:03,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1327209007, now seen corresponding path program 1 times [2023-08-31 23:02:03,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:03,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454698693] [2023-08-31 23:02:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:03,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:04,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:04,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:04,064 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:04,064 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:04,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 23:02:04,064 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:04,065 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:04,065 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:04,065 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-08-31 23:02:04,148 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:04,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 502 transitions, 1484 flow [2023-08-31 23:02:04,459 INFO L130 PetriNetUnfolder]: 103/1440 cut-off events. [2023-08-31 23:02:04,460 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 23:02:04,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1711 conditions, 1440 events. 103/1440 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5782 event pairs, 0 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 1607. Up to 42 conditions per place. [2023-08-31 23:02:04,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 500 places, 502 transitions, 1484 flow [2023-08-31 23:02:04,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 500 places, 502 transitions, 1484 flow [2023-08-31 23:02:04,503 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:04,503 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 500 places, 502 transitions, 1484 flow [2023-08-31 23:02:04,503 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 500 places, 502 transitions, 1484 flow [2023-08-31 23:02:04,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 502 transitions, 1484 flow [2023-08-31 23:02:04,761 INFO L130 PetriNetUnfolder]: 103/1440 cut-off events. [2023-08-31 23:02:04,761 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 23:02:04,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1711 conditions, 1440 events. 103/1440 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5782 event pairs, 0 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 1607. Up to 42 conditions per place. [2023-08-31 23:02:04,874 INFO L119 LiptonReduction]: Number of co-enabled transitions 215880 [2023-08-31 23:02:07,355 INFO L134 LiptonReduction]: Checked pairs total: 1024973 [2023-08-31 23:02:07,355 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-31 23:02:07,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:07,356 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:07,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:07,450 INFO L130 PetriNetUnfolder]: 74/820 cut-off events. [2023-08-31 23:02:07,451 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 23:02:07,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:07,451 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 23:02:07,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:07,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:07,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1108593156, now seen corresponding path program 1 times [2023-08-31 23:02:07,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:07,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758251497] [2023-08-31 23:02:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:07,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:07,490 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:07,525 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:07,526 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:07,526 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:07,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 23:02:07,526 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:07,527 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:07,527 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:07,527 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-08-31 23:02:07,607 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:07,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 522 places, 524 transitions, 1573 flow [2023-08-31 23:02:07,913 INFO L130 PetriNetUnfolder]: 108/1509 cut-off events. [2023-08-31 23:02:07,913 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 23:02:07,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1509 events. 108/1509 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6056 event pairs, 0 based on Foata normal form. 0/1098 useless extension candidates. Maximal degree in co-relation 1699. Up to 44 conditions per place. [2023-08-31 23:02:07,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 522 places, 524 transitions, 1573 flow [2023-08-31 23:02:07,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 522 places, 524 transitions, 1573 flow [2023-08-31 23:02:07,947 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:07,947 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 522 places, 524 transitions, 1573 flow [2023-08-31 23:02:07,947 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 522 places, 524 transitions, 1573 flow [2023-08-31 23:02:07,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 522 places, 524 transitions, 1573 flow [2023-08-31 23:02:08,204 INFO L130 PetriNetUnfolder]: 108/1509 cut-off events. [2023-08-31 23:02:08,205 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 23:02:08,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1509 events. 108/1509 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6056 event pairs, 0 based on Foata normal form. 0/1098 useless extension candidates. Maximal degree in co-relation 1699. Up to 44 conditions per place. [2023-08-31 23:02:08,332 INFO L119 LiptonReduction]: Number of co-enabled transitions 236376 [2023-08-31 23:02:10,922 INFO L134 LiptonReduction]: Checked pairs total: 1153055 [2023-08-31 23:02:10,922 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-08-31 23:02:10,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:10,923 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:10,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:11,032 INFO L130 PetriNetUnfolder]: 82/870 cut-off events. [2023-08-31 23:02:11,033 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 23:02:11,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:11,033 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 23:02:11,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:11,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:11,033 INFO L85 PathProgramCache]: Analyzing trace with hash -240747953, now seen corresponding path program 1 times [2023-08-31 23:02:11,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:11,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861018890] [2023-08-31 23:02:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:11,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:11,065 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:11,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:11,102 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:11,102 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:11,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 23:02:11,103 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:11,103 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:11,103 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:11,103 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-08-31 23:02:11,191 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:11,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 544 places, 546 transitions, 1664 flow [2023-08-31 23:02:11,525 INFO L130 PetriNetUnfolder]: 113/1578 cut-off events. [2023-08-31 23:02:11,526 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 23:02:11,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 1578 events. 113/1578 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6352 event pairs, 0 based on Foata normal form. 0/1148 useless extension candidates. Maximal degree in co-relation 1792. Up to 46 conditions per place. [2023-08-31 23:02:11,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 544 places, 546 transitions, 1664 flow [2023-08-31 23:02:11,567 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 544 places, 546 transitions, 1664 flow [2023-08-31 23:02:11,567 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:11,567 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 544 places, 546 transitions, 1664 flow [2023-08-31 23:02:11,567 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 544 places, 546 transitions, 1664 flow [2023-08-31 23:02:11,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 544 places, 546 transitions, 1664 flow [2023-08-31 23:02:11,851 INFO L130 PetriNetUnfolder]: 113/1578 cut-off events. [2023-08-31 23:02:11,851 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 23:02:11,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 1578 events. 113/1578 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6352 event pairs, 0 based on Foata normal form. 0/1148 useless extension candidates. Maximal degree in co-relation 1792. Up to 46 conditions per place. [2023-08-31 23:02:11,995 INFO L119 LiptonReduction]: Number of co-enabled transitions 257796 [2023-08-31 23:02:14,559 INFO L134 LiptonReduction]: Checked pairs total: 1264718 [2023-08-31 23:02:14,559 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-08-31 23:02:14,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:14,561 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:14,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:14,680 INFO L130 PetriNetUnfolder]: 87/914 cut-off events. [2023-08-31 23:02:14,680 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 23:02:14,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:14,680 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 23:02:14,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:14,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash -223911151, now seen corresponding path program 1 times [2023-08-31 23:02:14,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:14,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585535281] [2023-08-31 23:02:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:14,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:14,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:14,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:14,764 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:14,764 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:14,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 23:02:14,764 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:14,764 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:14,765 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:14,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-08-31 23:02:14,855 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:14,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 566 places, 568 transitions, 1757 flow [2023-08-31 23:02:15,215 INFO L130 PetriNetUnfolder]: 118/1647 cut-off events. [2023-08-31 23:02:15,216 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 23:02:15,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 1647 events. 118/1647 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6657 event pairs, 0 based on Foata normal form. 0/1198 useless extension candidates. Maximal degree in co-relation 1886. Up to 48 conditions per place. [2023-08-31 23:02:15,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 566 places, 568 transitions, 1757 flow [2023-08-31 23:02:15,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 566 places, 568 transitions, 1757 flow [2023-08-31 23:02:15,285 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:15,286 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 566 places, 568 transitions, 1757 flow [2023-08-31 23:02:15,286 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 566 places, 568 transitions, 1757 flow [2023-08-31 23:02:15,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 566 places, 568 transitions, 1757 flow [2023-08-31 23:02:15,684 INFO L130 PetriNetUnfolder]: 118/1647 cut-off events. [2023-08-31 23:02:15,684 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 23:02:15,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 1647 events. 118/1647 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6657 event pairs, 0 based on Foata normal form. 0/1198 useless extension candidates. Maximal degree in co-relation 1886. Up to 48 conditions per place. [2023-08-31 23:02:15,840 INFO L119 LiptonReduction]: Number of co-enabled transitions 280140 [2023-08-31 23:02:18,731 INFO L134 LiptonReduction]: Checked pairs total: 1371478 [2023-08-31 23:02:18,731 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-08-31 23:02:18,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:18,733 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:18,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:18,890 INFO L130 PetriNetUnfolder]: 89/952 cut-off events. [2023-08-31 23:02:18,890 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 23:02:18,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:18,890 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 23:02:18,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:18,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:18,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1094867054, now seen corresponding path program 1 times [2023-08-31 23:02:18,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:18,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618093143] [2023-08-31 23:02:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:18,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:18,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:18,979 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:18,980 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:18,980 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:18,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-31 23:02:18,980 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:18,981 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:18,981 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:18,981 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-08-31 23:02:19,079 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:19,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 588 places, 590 transitions, 1852 flow [2023-08-31 23:02:19,452 INFO L130 PetriNetUnfolder]: 123/1716 cut-off events. [2023-08-31 23:02:19,452 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 23:02:19,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2089 conditions, 1716 events. 123/1716 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6932 event pairs, 0 based on Foata normal form. 0/1248 useless extension candidates. Maximal degree in co-relation 1981. Up to 50 conditions per place. [2023-08-31 23:02:19,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 588 places, 590 transitions, 1852 flow [2023-08-31 23:02:19,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 588 places, 590 transitions, 1852 flow [2023-08-31 23:02:19,502 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:19,502 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 588 places, 590 transitions, 1852 flow [2023-08-31 23:02:19,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 588 places, 590 transitions, 1852 flow [2023-08-31 23:02:19,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 588 places, 590 transitions, 1852 flow [2023-08-31 23:02:19,841 INFO L130 PetriNetUnfolder]: 123/1716 cut-off events. [2023-08-31 23:02:19,842 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 23:02:19,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2089 conditions, 1716 events. 123/1716 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6932 event pairs, 0 based on Foata normal form. 0/1248 useless extension candidates. Maximal degree in co-relation 1981. Up to 50 conditions per place. [2023-08-31 23:02:20,009 INFO L119 LiptonReduction]: Number of co-enabled transitions 303408 [2023-08-31 23:02:22,749 INFO L134 LiptonReduction]: Checked pairs total: 1472114 [2023-08-31 23:02:22,749 INFO L136 LiptonReduction]: Total number of compositions: 234 [2023-08-31 23:02:22,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:22,750 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:22,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:22,887 INFO L130 PetriNetUnfolder]: 91/990 cut-off events. [2023-08-31 23:02:22,887 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 23:02:22,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:22,887 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 23:02:22,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:22,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:22,888 INFO L85 PathProgramCache]: Analyzing trace with hash 810000805, now seen corresponding path program 1 times [2023-08-31 23:02:22,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:22,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760548119] [2023-08-31 23:02:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:22,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:22,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:22,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:22,972 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:22,972 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:22,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 23:02:22,973 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:22,973 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:22,973 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:22,973 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-08-31 23:02:23,068 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:23,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 610 places, 612 transitions, 1949 flow [2023-08-31 23:02:23,509 INFO L130 PetriNetUnfolder]: 128/1785 cut-off events. [2023-08-31 23:02:23,509 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 23:02:23,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2186 conditions, 1785 events. 128/1785 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 7221 event pairs, 0 based on Foata normal form. 0/1298 useless extension candidates. Maximal degree in co-relation 2077. Up to 52 conditions per place. [2023-08-31 23:02:23,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 610 places, 612 transitions, 1949 flow [2023-08-31 23:02:23,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 610 places, 612 transitions, 1949 flow [2023-08-31 23:02:23,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:23,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 610 places, 612 transitions, 1949 flow [2023-08-31 23:02:23,562 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 610 places, 612 transitions, 1949 flow [2023-08-31 23:02:23,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 610 places, 612 transitions, 1949 flow [2023-08-31 23:02:23,928 INFO L130 PetriNetUnfolder]: 128/1785 cut-off events. [2023-08-31 23:02:23,928 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 23:02:23,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2186 conditions, 1785 events. 128/1785 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 7221 event pairs, 0 based on Foata normal form. 0/1298 useless extension candidates. Maximal degree in co-relation 2077. Up to 52 conditions per place. [2023-08-31 23:02:24,106 INFO L119 LiptonReduction]: Number of co-enabled transitions 327600 [2023-08-31 23:02:27,160 INFO L134 LiptonReduction]: Checked pairs total: 1599401 [2023-08-31 23:02:27,160 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-08-31 23:02:27,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:27,161 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:27,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:27,320 INFO L130 PetriNetUnfolder]: 96/1034 cut-off events. [2023-08-31 23:02:27,320 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 23:02:27,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:27,320 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 23:02:27,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:27,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:27,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1147142566, now seen corresponding path program 1 times [2023-08-31 23:02:27,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:27,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110013195] [2023-08-31 23:02:27,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:27,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:27,379 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:27,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:27,437 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:27,437 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:27,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-31 23:02:27,437 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:27,438 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:27,438 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:27,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-08-31 23:02:27,549 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:27,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 632 places, 634 transitions, 2048 flow [2023-08-31 23:02:28,035 INFO L130 PetriNetUnfolder]: 133/1854 cut-off events. [2023-08-31 23:02:28,036 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 23:02:28,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 1854 events. 133/1854 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 7501 event pairs, 0 based on Foata normal form. 0/1348 useless extension candidates. Maximal degree in co-relation 2174. Up to 54 conditions per place. [2023-08-31 23:02:28,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 632 places, 634 transitions, 2048 flow [2023-08-31 23:02:28,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 632 places, 634 transitions, 2048 flow [2023-08-31 23:02:28,090 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:28,090 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 632 places, 634 transitions, 2048 flow [2023-08-31 23:02:28,090 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 632 places, 634 transitions, 2048 flow [2023-08-31 23:02:28,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 632 places, 634 transitions, 2048 flow [2023-08-31 23:02:28,485 INFO L130 PetriNetUnfolder]: 133/1854 cut-off events. [2023-08-31 23:02:28,485 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 23:02:28,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 1854 events. 133/1854 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 7501 event pairs, 0 based on Foata normal form. 0/1348 useless extension candidates. Maximal degree in co-relation 2174. Up to 54 conditions per place. [2023-08-31 23:02:28,691 INFO L119 LiptonReduction]: Number of co-enabled transitions 352716 [2023-08-31 23:02:31,712 INFO L134 LiptonReduction]: Checked pairs total: 1689330 [2023-08-31 23:02:31,712 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-08-31 23:02:31,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:31,714 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:31,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:31,891 INFO L130 PetriNetUnfolder]: 99/1074 cut-off events. [2023-08-31 23:02:31,891 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 23:02:31,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:31,892 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 23:02:31,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:31,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:31,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1350447440, now seen corresponding path program 1 times [2023-08-31 23:02:31,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:31,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597986714] [2023-08-31 23:02:31,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:31,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:31,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:31,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:31,973 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:31,973 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:31,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-31 23:02:31,973 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:31,974 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:31,974 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:31,974 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-08-31 23:02:32,081 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:32,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 654 places, 656 transitions, 2149 flow [2023-08-31 23:02:32,638 INFO L130 PetriNetUnfolder]: 138/1923 cut-off events. [2023-08-31 23:02:32,638 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 23:02:32,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 1923 events. 138/1923 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 7804 event pairs, 0 based on Foata normal form. 0/1398 useless extension candidates. Maximal degree in co-relation 2272. Up to 56 conditions per place. [2023-08-31 23:02:32,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 654 places, 656 transitions, 2149 flow [2023-08-31 23:02:32,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 654 places, 656 transitions, 2149 flow [2023-08-31 23:02:32,689 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:32,689 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 654 places, 656 transitions, 2149 flow [2023-08-31 23:02:32,689 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 654 places, 656 transitions, 2149 flow [2023-08-31 23:02:32,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 654 places, 656 transitions, 2149 flow [2023-08-31 23:02:33,123 INFO L130 PetriNetUnfolder]: 138/1923 cut-off events. [2023-08-31 23:02:33,123 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 23:02:33,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 1923 events. 138/1923 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 7804 event pairs, 0 based on Foata normal form. 0/1398 useless extension candidates. Maximal degree in co-relation 2272. Up to 56 conditions per place. [2023-08-31 23:02:33,339 INFO L119 LiptonReduction]: Number of co-enabled transitions 378756 [2023-08-31 23:02:36,536 INFO L134 LiptonReduction]: Checked pairs total: 1831025 [2023-08-31 23:02:36,536 INFO L136 LiptonReduction]: Total number of compositions: 257 [2023-08-31 23:02:36,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:36,538 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:36,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:36,758 INFO L130 PetriNetUnfolder]: 101/1111 cut-off events. [2023-08-31 23:02:36,758 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 23:02:36,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:36,759 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 23:02:36,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:36,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:36,759 INFO L85 PathProgramCache]: Analyzing trace with hash 535418214, now seen corresponding path program 1 times [2023-08-31 23:02:36,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:36,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710802756] [2023-08-31 23:02:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:36,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:36,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:36,842 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:36,843 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:36,843 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:36,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 23:02:36,843 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:36,844 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:36,844 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:36,844 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-08-31 23:02:36,960 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:36,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 676 places, 678 transitions, 2252 flow [2023-08-31 23:02:37,468 INFO L130 PetriNetUnfolder]: 143/1992 cut-off events. [2023-08-31 23:02:37,468 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 23:02:37,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 1992 events. 143/1992 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8097 event pairs, 0 based on Foata normal form. 0/1448 useless extension candidates. Maximal degree in co-relation 2371. Up to 58 conditions per place. [2023-08-31 23:02:37,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 676 places, 678 transitions, 2252 flow [2023-08-31 23:02:37,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 676 places, 678 transitions, 2252 flow [2023-08-31 23:02:37,559 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:37,559 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 676 places, 678 transitions, 2252 flow [2023-08-31 23:02:37,560 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 676 places, 678 transitions, 2252 flow [2023-08-31 23:02:37,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 676 places, 678 transitions, 2252 flow [2023-08-31 23:02:38,037 INFO L130 PetriNetUnfolder]: 143/1992 cut-off events. [2023-08-31 23:02:38,038 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 23:02:38,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 1992 events. 143/1992 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8097 event pairs, 0 based on Foata normal form. 0/1448 useless extension candidates. Maximal degree in co-relation 2371. Up to 58 conditions per place. [2023-08-31 23:02:38,243 INFO L119 LiptonReduction]: Number of co-enabled transitions 405720 [2023-08-31 23:02:41,396 INFO L134 LiptonReduction]: Checked pairs total: 2006265 [2023-08-31 23:02:41,396 INFO L136 LiptonReduction]: Total number of compositions: 269 [2023-08-31 23:02:41,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:41,398 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:41,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:41,651 INFO L130 PetriNetUnfolder]: 107/1158 cut-off events. [2023-08-31 23:02:41,652 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 23:02:41,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:41,652 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 23:02:41,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:41,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:41,652 INFO L85 PathProgramCache]: Analyzing trace with hash -967790210, now seen corresponding path program 1 times [2023-08-31 23:02:41,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:41,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45504231] [2023-08-31 23:02:41,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:41,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:41,707 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:41,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:41,753 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:41,753 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:41,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-31 23:02:41,754 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:41,754 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:41,754 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:41,754 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-08-31 23:02:41,867 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:41,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 700 transitions, 2357 flow [2023-08-31 23:02:42,527 INFO L130 PetriNetUnfolder]: 148/2061 cut-off events. [2023-08-31 23:02:42,527 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 23:02:42,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 2061 events. 148/2061 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8344 event pairs, 0 based on Foata normal form. 0/1498 useless extension candidates. Maximal degree in co-relation 2471. Up to 60 conditions per place. [2023-08-31 23:02:42,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 698 places, 700 transitions, 2357 flow [2023-08-31 23:02:42,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 698 places, 700 transitions, 2357 flow [2023-08-31 23:02:42,621 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:42,621 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 698 places, 700 transitions, 2357 flow [2023-08-31 23:02:42,621 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 698 places, 700 transitions, 2357 flow [2023-08-31 23:02:42,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 700 transitions, 2357 flow [2023-08-31 23:02:43,235 INFO L130 PetriNetUnfolder]: 148/2061 cut-off events. [2023-08-31 23:02:43,235 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 23:02:43,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 2061 events. 148/2061 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8344 event pairs, 0 based on Foata normal form. 0/1498 useless extension candidates. Maximal degree in co-relation 2471. Up to 60 conditions per place. [2023-08-31 23:02:43,439 INFO L119 LiptonReduction]: Number of co-enabled transitions 433608 [2023-08-31 23:02:46,716 INFO L134 LiptonReduction]: Checked pairs total: 2036732 [2023-08-31 23:02:46,716 INFO L136 LiptonReduction]: Total number of compositions: 274 [2023-08-31 23:02:46,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:46,718 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:46,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:46,937 INFO L130 PetriNetUnfolder]: 107/1191 cut-off events. [2023-08-31 23:02:46,937 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 23:02:46,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:46,937 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 23:02:46,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:46,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:46,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1619591476, now seen corresponding path program 1 times [2023-08-31 23:02:46,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:46,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356359044] [2023-08-31 23:02:46,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:46,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:46,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:47,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:47,035 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:47,035 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:47,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-31 23:02:47,036 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:47,036 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:47,036 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:47,036 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-08-31 23:02:47,154 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:47,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 720 places, 722 transitions, 2464 flow [2023-08-31 23:02:47,860 INFO L130 PetriNetUnfolder]: 153/2130 cut-off events. [2023-08-31 23:02:47,860 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 23:02:47,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 2130 events. 153/2130 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8656 event pairs, 0 based on Foata normal form. 0/1548 useless extension candidates. Maximal degree in co-relation 2572. Up to 62 conditions per place. [2023-08-31 23:02:47,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 720 places, 722 transitions, 2464 flow [2023-08-31 23:02:47,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 720 places, 722 transitions, 2464 flow [2023-08-31 23:02:47,955 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:47,955 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 720 places, 722 transitions, 2464 flow [2023-08-31 23:02:47,955 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 720 places, 722 transitions, 2464 flow [2023-08-31 23:02:47,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 720 places, 722 transitions, 2464 flow [2023-08-31 23:02:48,496 INFO L130 PetriNetUnfolder]: 153/2130 cut-off events. [2023-08-31 23:02:48,496 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 23:02:48,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 2130 events. 153/2130 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8656 event pairs, 0 based on Foata normal form. 0/1548 useless extension candidates. Maximal degree in co-relation 2572. Up to 62 conditions per place. [2023-08-31 23:02:48,780 INFO L119 LiptonReduction]: Number of co-enabled transitions 462420 [2023-08-31 23:02:52,148 INFO L134 LiptonReduction]: Checked pairs total: 2181032 [2023-08-31 23:02:52,149 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-08-31 23:02:52,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:52,150 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:52,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:52,365 INFO L130 PetriNetUnfolder]: 111/1234 cut-off events. [2023-08-31 23:02:52,365 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 23:02:52,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:52,366 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 23:02:52,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:52,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:52,366 INFO L85 PathProgramCache]: Analyzing trace with hash 275217807, now seen corresponding path program 1 times [2023-08-31 23:02:52,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:52,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059261851] [2023-08-31 23:02:52,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:52,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:52,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:52,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:52,466 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:52,466 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:52,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-31 23:02:52,466 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:52,467 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:52,467 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:52,467 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-08-31 23:02:52,580 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:52,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 742 places, 744 transitions, 2573 flow [2023-08-31 23:02:53,181 INFO L130 PetriNetUnfolder]: 158/2199 cut-off events. [2023-08-31 23:02:53,181 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 23:02:53,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2789 conditions, 2199 events. 158/2199 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8956 event pairs, 0 based on Foata normal form. 0/1598 useless extension candidates. Maximal degree in co-relation 2674. Up to 64 conditions per place. [2023-08-31 23:02:53,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 742 places, 744 transitions, 2573 flow [2023-08-31 23:02:53,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 742 places, 744 transitions, 2573 flow [2023-08-31 23:02:53,286 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:53,286 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 742 places, 744 transitions, 2573 flow [2023-08-31 23:02:53,286 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 742 places, 744 transitions, 2573 flow [2023-08-31 23:02:53,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 742 places, 744 transitions, 2573 flow [2023-08-31 23:02:53,885 INFO L130 PetriNetUnfolder]: 158/2199 cut-off events. [2023-08-31 23:02:53,885 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 23:02:53,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2789 conditions, 2199 events. 158/2199 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8956 event pairs, 0 based on Foata normal form. 0/1598 useless extension candidates. Maximal degree in co-relation 2674. Up to 64 conditions per place. [2023-08-31 23:02:54,158 INFO L119 LiptonReduction]: Number of co-enabled transitions 492156 [2023-08-31 23:02:57,588 INFO L134 LiptonReduction]: Checked pairs total: 2368181 [2023-08-31 23:02:57,588 INFO L136 LiptonReduction]: Total number of compositions: 293 [2023-08-31 23:02:57,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:02:57,590 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:02:57,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:02:57,894 INFO L130 PetriNetUnfolder]: 117/1279 cut-off events. [2023-08-31 23:02:57,894 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 23:02:57,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:02:57,895 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 23:02:57,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:02:57,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:02:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2125583584, now seen corresponding path program 1 times [2023-08-31 23:02:57,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:02:57,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311066141] [2023-08-31 23:02:57,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:02:57,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:02:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:57,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:02:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:02:58,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:02:58,006 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:02:58,006 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:02:58,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-31 23:02:58,007 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:02:58,007 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:02:58,007 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:02:58,007 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-08-31 23:02:58,128 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:02:58,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 764 places, 766 transitions, 2684 flow [2023-08-31 23:02:58,782 INFO L130 PetriNetUnfolder]: 163/2268 cut-off events. [2023-08-31 23:02:58,782 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 23:02:58,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2893 conditions, 2268 events. 163/2268 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9235 event pairs, 0 based on Foata normal form. 0/1648 useless extension candidates. Maximal degree in co-relation 2777. Up to 66 conditions per place. [2023-08-31 23:02:58,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 764 places, 766 transitions, 2684 flow [2023-08-31 23:02:58,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 764 places, 766 transitions, 2684 flow [2023-08-31 23:02:58,897 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:02:58,897 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 764 places, 766 transitions, 2684 flow [2023-08-31 23:02:58,898 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 764 places, 766 transitions, 2684 flow [2023-08-31 23:02:58,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 764 places, 766 transitions, 2684 flow [2023-08-31 23:02:59,631 INFO L130 PetriNetUnfolder]: 163/2268 cut-off events. [2023-08-31 23:02:59,631 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 23:02:59,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2893 conditions, 2268 events. 163/2268 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9235 event pairs, 0 based on Foata normal form. 0/1648 useless extension candidates. Maximal degree in co-relation 2777. Up to 66 conditions per place. [2023-08-31 23:02:59,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 522816 [2023-08-31 23:03:03,475 INFO L134 LiptonReduction]: Checked pairs total: 2530921 [2023-08-31 23:03:03,475 INFO L136 LiptonReduction]: Total number of compositions: 296 [2023-08-31 23:03:03,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:03:03,477 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:03:03,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:03:03,736 INFO L130 PetriNetUnfolder]: 122/1324 cut-off events. [2023-08-31 23:03:03,736 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 23:03:03,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:03:03,736 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 23:03:03,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:03:03,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:03:03,737 INFO L85 PathProgramCache]: Analyzing trace with hash 457691482, now seen corresponding path program 1 times [2023-08-31 23:03:03,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:03:03,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936116353] [2023-08-31 23:03:03,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:03:03,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:03:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:03,785 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:03:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:03,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:03:03,854 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:03:03,854 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:03:03,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-31 23:03:03,855 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:03:03,855 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:03:03,855 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:03:03,855 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-08-31 23:03:03,984 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:03:03,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 786 places, 788 transitions, 2797 flow [2023-08-31 23:03:04,658 INFO L130 PetriNetUnfolder]: 168/2337 cut-off events. [2023-08-31 23:03:04,659 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 23:03:04,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 2337 events. 168/2337 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9554 event pairs, 0 based on Foata normal form. 0/1698 useless extension candidates. Maximal degree in co-relation 2881. Up to 68 conditions per place. [2023-08-31 23:03:04,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 786 places, 788 transitions, 2797 flow [2023-08-31 23:03:04,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 786 places, 788 transitions, 2797 flow [2023-08-31 23:03:04,772 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:03:04,772 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 786 places, 788 transitions, 2797 flow [2023-08-31 23:03:04,772 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 786 places, 788 transitions, 2797 flow [2023-08-31 23:03:04,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 786 places, 788 transitions, 2797 flow [2023-08-31 23:03:05,431 INFO L130 PetriNetUnfolder]: 168/2337 cut-off events. [2023-08-31 23:03:05,431 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 23:03:05,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 2337 events. 168/2337 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9554 event pairs, 0 based on Foata normal form. 0/1698 useless extension candidates. Maximal degree in co-relation 2881. Up to 68 conditions per place. [2023-08-31 23:03:05,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 554400 [2023-08-31 23:03:09,479 INFO L134 LiptonReduction]: Checked pairs total: 2663232 [2023-08-31 23:03:09,479 INFO L136 LiptonReduction]: Total number of compositions: 307 [2023-08-31 23:03:09,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:03:09,481 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:03:09,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:03:09,737 INFO L130 PetriNetUnfolder]: 123/1360 cut-off events. [2023-08-31 23:03:09,737 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 23:03:09,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:03:09,737 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 23:03:09,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:03:09,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:03:09,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1324200604, now seen corresponding path program 1 times [2023-08-31 23:03:09,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:03:09,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719590583] [2023-08-31 23:03:09,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:03:09,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:03:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:09,803 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:03:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:09,870 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:03:09,870 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:03:09,870 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:03:09,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-31 23:03:09,871 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:03:09,871 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:03:09,871 WARN L233 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:03:09,871 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2023-08-31 23:03:09,996 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:03:10,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 808 places, 810 transitions, 2912 flow [2023-08-31 23:03:10,712 INFO L130 PetriNetUnfolder]: 173/2406 cut-off events. [2023-08-31 23:03:10,712 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 23:03:10,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3104 conditions, 2406 events. 173/2406 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9817 event pairs, 0 based on Foata normal form. 0/1748 useless extension candidates. Maximal degree in co-relation 2986. Up to 70 conditions per place. [2023-08-31 23:03:10,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 808 places, 810 transitions, 2912 flow [2023-08-31 23:03:10,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 808 places, 810 transitions, 2912 flow [2023-08-31 23:03:10,821 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:03:10,822 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 808 places, 810 transitions, 2912 flow [2023-08-31 23:03:10,822 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 808 places, 810 transitions, 2912 flow [2023-08-31 23:03:10,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 808 places, 810 transitions, 2912 flow [2023-08-31 23:03:11,582 INFO L130 PetriNetUnfolder]: 173/2406 cut-off events. [2023-08-31 23:03:11,582 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 23:03:11,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3104 conditions, 2406 events. 173/2406 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9817 event pairs, 0 based on Foata normal form. 0/1748 useless extension candidates. Maximal degree in co-relation 2986. Up to 70 conditions per place. [2023-08-31 23:03:11,956 INFO L119 LiptonReduction]: Number of co-enabled transitions 586908 [2023-08-31 23:03:15,713 INFO L134 LiptonReduction]: Checked pairs total: 2797594 [2023-08-31 23:03:15,714 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-08-31 23:03:15,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:03:15,715 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:03:15,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:03:15,998 INFO L130 PetriNetUnfolder]: 127/1402 cut-off events. [2023-08-31 23:03:15,998 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 23:03:15,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:03:15,999 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 23:03:15,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:03:15,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:03:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1567085589, now seen corresponding path program 1 times [2023-08-31 23:03:16,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:03:16,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125557271] [2023-08-31 23:03:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:03:16,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:03:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:16,063 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:03:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:16,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:03:16,120 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:03:16,121 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:03:16,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-31 23:03:16,121 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:03:16,121 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:03:16,122 WARN L233 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:03:16,122 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2023-08-31 23:03:16,257 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:03:16,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 830 places, 832 transitions, 3029 flow [2023-08-31 23:03:17,097 INFO L130 PetriNetUnfolder]: 178/2475 cut-off events. [2023-08-31 23:03:17,098 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 23:03:17,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3211 conditions, 2475 events. 178/2475 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10105 event pairs, 0 based on Foata normal form. 0/1798 useless extension candidates. Maximal degree in co-relation 3092. Up to 72 conditions per place. [2023-08-31 23:03:17,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 830 places, 832 transitions, 3029 flow [2023-08-31 23:03:17,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 830 places, 832 transitions, 3029 flow [2023-08-31 23:03:17,210 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:03:17,211 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 830 places, 832 transitions, 3029 flow [2023-08-31 23:03:17,211 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 830 places, 832 transitions, 3029 flow [2023-08-31 23:03:17,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 830 places, 832 transitions, 3029 flow [2023-08-31 23:03:17,995 INFO L130 PetriNetUnfolder]: 178/2475 cut-off events. [2023-08-31 23:03:17,995 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 23:03:18,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3211 conditions, 2475 events. 178/2475 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 10105 event pairs, 0 based on Foata normal form. 0/1798 useless extension candidates. Maximal degree in co-relation 3092. Up to 72 conditions per place. [2023-08-31 23:03:18,397 INFO L119 LiptonReduction]: Number of co-enabled transitions 620340 [2023-08-31 23:03:22,216 INFO L134 LiptonReduction]: Checked pairs total: 3031071 [2023-08-31 23:03:22,216 INFO L136 LiptonReduction]: Total number of compositions: 321 [2023-08-31 23:03:22,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:03:22,217 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:03:22,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:03:22,524 INFO L130 PetriNetUnfolder]: 134/1449 cut-off events. [2023-08-31 23:03:22,524 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 23:03:22,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:03:22,525 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 23:03:22,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:03:22,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:03:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1115581183, now seen corresponding path program 1 times [2023-08-31 23:03:22,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:03:22,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932552742] [2023-08-31 23:03:22,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:03:22,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:03:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:22,581 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:03:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:22,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:03:22,643 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:03:22,643 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:03:22,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-31 23:03:22,643 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:03:22,644 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:03:22,644 WARN L233 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:03:22,644 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2023-08-31 23:03:22,779 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:03:22,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 852 places, 854 transitions, 3148 flow [2023-08-31 23:03:23,689 INFO L130 PetriNetUnfolder]: 183/2544 cut-off events. [2023-08-31 23:03:23,689 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 23:03:23,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3319 conditions, 2544 events. 183/2544 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 10332 event pairs, 0 based on Foata normal form. 0/1848 useless extension candidates. Maximal degree in co-relation 3199. Up to 74 conditions per place. [2023-08-31 23:03:23,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 852 places, 854 transitions, 3148 flow [2023-08-31 23:03:23,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 852 places, 854 transitions, 3148 flow [2023-08-31 23:03:23,807 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:03:23,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 852 places, 854 transitions, 3148 flow [2023-08-31 23:03:23,807 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 852 places, 854 transitions, 3148 flow [2023-08-31 23:03:23,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 852 places, 854 transitions, 3148 flow [2023-08-31 23:03:24,588 INFO L130 PetriNetUnfolder]: 183/2544 cut-off events. [2023-08-31 23:03:24,588 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 23:03:24,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3319 conditions, 2544 events. 183/2544 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 10332 event pairs, 0 based on Foata normal form. 0/1848 useless extension candidates. Maximal degree in co-relation 3199. Up to 74 conditions per place. [2023-08-31 23:03:25,173 INFO L119 LiptonReduction]: Number of co-enabled transitions 654696 [2023-08-31 23:03:29,285 INFO L134 LiptonReduction]: Checked pairs total: 2728456 [2023-08-31 23:03:29,285 INFO L136 LiptonReduction]: Total number of compositions: 328 [2023-08-31 23:03:29,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:03:29,286 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:03:29,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:03:29,613 INFO L130 PetriNetUnfolder]: 140/1496 cut-off events. [2023-08-31 23:03:29,613 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 23:03:29,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:03:29,613 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 23:03:29,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:03:29,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:03:29,614 INFO L85 PathProgramCache]: Analyzing trace with hash -612595998, now seen corresponding path program 1 times [2023-08-31 23:03:29,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:03:29,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645196812] [2023-08-31 23:03:29,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:03:29,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:03:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:29,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:03:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:29,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:03:29,765 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:03:29,765 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:03:29,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-31 23:03:29,766 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:03:29,766 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:03:29,766 WARN L233 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:03:29,766 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2023-08-31 23:03:29,912 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:03:29,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 874 places, 876 transitions, 3269 flow [2023-08-31 23:03:30,789 INFO L130 PetriNetUnfolder]: 188/2613 cut-off events. [2023-08-31 23:03:30,789 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 23:03:30,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3428 conditions, 2613 events. 188/2613 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 10632 event pairs, 0 based on Foata normal form. 0/1898 useless extension candidates. Maximal degree in co-relation 3307. Up to 76 conditions per place. [2023-08-31 23:03:30,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 874 places, 876 transitions, 3269 flow [2023-08-31 23:03:30,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 874 places, 876 transitions, 3269 flow [2023-08-31 23:03:30,921 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:03:30,921 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 874 places, 876 transitions, 3269 flow [2023-08-31 23:03:30,921 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 874 places, 876 transitions, 3269 flow [2023-08-31 23:03:30,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 874 places, 876 transitions, 3269 flow [2023-08-31 23:03:31,745 INFO L130 PetriNetUnfolder]: 188/2613 cut-off events. [2023-08-31 23:03:31,745 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 23:03:31,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3428 conditions, 2613 events. 188/2613 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 10632 event pairs, 0 based on Foata normal form. 0/1898 useless extension candidates. Maximal degree in co-relation 3307. Up to 76 conditions per place. [2023-08-31 23:03:32,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 689976 [2023-08-31 23:03:36,400 INFO L134 LiptonReduction]: Checked pairs total: 3340803 [2023-08-31 23:03:36,400 INFO L136 LiptonReduction]: Total number of compositions: 340 [2023-08-31 23:03:36,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:03:36,401 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:03:36,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:03:36,744 INFO L130 PetriNetUnfolder]: 141/1531 cut-off events. [2023-08-31 23:03:36,744 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 23:03:36,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:03:36,744 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 23:03:36,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:03:36,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:03:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash 534560594, now seen corresponding path program 1 times [2023-08-31 23:03:36,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:03:36,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77224833] [2023-08-31 23:03:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:03:36,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:03:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:36,799 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:03:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:36,866 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:03:36,866 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:03:36,866 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:03:36,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-31 23:03:36,867 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:03:36,867 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:03:36,867 WARN L233 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:03:36,867 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2023-08-31 23:03:37,080 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:03:37,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 896 places, 898 transitions, 3392 flow [2023-08-31 23:03:38,241 INFO L130 PetriNetUnfolder]: 193/2682 cut-off events. [2023-08-31 23:03:38,241 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 23:03:38,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3538 conditions, 2682 events. 193/2682 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 10880 event pairs, 0 based on Foata normal form. 0/1948 useless extension candidates. Maximal degree in co-relation 3416. Up to 78 conditions per place. [2023-08-31 23:03:38,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 896 places, 898 transitions, 3392 flow [2023-08-31 23:03:38,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 896 places, 898 transitions, 3392 flow [2023-08-31 23:03:38,394 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:03:38,394 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 896 places, 898 transitions, 3392 flow [2023-08-31 23:03:38,395 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 896 places, 898 transitions, 3392 flow [2023-08-31 23:03:38,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 896 places, 898 transitions, 3392 flow [2023-08-31 23:03:39,288 INFO L130 PetriNetUnfolder]: 193/2682 cut-off events. [2023-08-31 23:03:39,288 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 23:03:39,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3538 conditions, 2682 events. 193/2682 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 10880 event pairs, 0 based on Foata normal form. 0/1948 useless extension candidates. Maximal degree in co-relation 3416. Up to 78 conditions per place. [2023-08-31 23:03:39,918 INFO L119 LiptonReduction]: Number of co-enabled transitions 726180 [2023-08-31 23:03:44,051 INFO L134 LiptonReduction]: Checked pairs total: 3019019 [2023-08-31 23:03:44,051 INFO L136 LiptonReduction]: Total number of compositions: 344 [2023-08-31 23:03:44,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:03:44,053 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:03:44,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:03:44,422 INFO L130 PetriNetUnfolder]: 145/1574 cut-off events. [2023-08-31 23:03:44,422 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 23:03:44,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:03:44,422 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 23:03:44,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:03:44,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:03:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash 23079598, now seen corresponding path program 1 times [2023-08-31 23:03:44,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:03:44,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251271733] [2023-08-31 23:03:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:03:44,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:03:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:44,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:03:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:44,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:03:44,560 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:03:44,560 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:03:44,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-31 23:03:44,561 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:03:44,561 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:03:44,561 WARN L233 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:03:44,561 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2023-08-31 23:03:44,712 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:03:44,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 918 places, 920 transitions, 3517 flow [2023-08-31 23:03:45,870 INFO L130 PetriNetUnfolder]: 198/2751 cut-off events. [2023-08-31 23:03:45,870 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 23:03:46,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3649 conditions, 2751 events. 198/2751 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 11159 event pairs, 0 based on Foata normal form. 0/1998 useless extension candidates. Maximal degree in co-relation 3526. Up to 80 conditions per place. [2023-08-31 23:03:46,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 918 places, 920 transitions, 3517 flow [2023-08-31 23:03:46,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 918 places, 920 transitions, 3517 flow [2023-08-31 23:03:46,038 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:03:46,038 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 918 places, 920 transitions, 3517 flow [2023-08-31 23:03:46,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 918 places, 920 transitions, 3517 flow [2023-08-31 23:03:46,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 918 places, 920 transitions, 3517 flow [2023-08-31 23:03:46,946 INFO L130 PetriNetUnfolder]: 198/2751 cut-off events. [2023-08-31 23:03:46,946 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 23:03:47,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3649 conditions, 2751 events. 198/2751 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 11159 event pairs, 0 based on Foata normal form. 0/1998 useless extension candidates. Maximal degree in co-relation 3526. Up to 80 conditions per place. [2023-08-31 23:03:47,514 INFO L119 LiptonReduction]: Number of co-enabled transitions 763308 [2023-08-31 23:03:51,804 INFO L134 LiptonReduction]: Checked pairs total: 3821427 [2023-08-31 23:03:51,804 INFO L136 LiptonReduction]: Total number of compositions: 347 [2023-08-31 23:03:51,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:03:51,805 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:03:51,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:03:52,175 INFO L130 PetriNetUnfolder]: 153/1624 cut-off events. [2023-08-31 23:03:52,176 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 23:03:52,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:03:52,176 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 23:03:52,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:03:52,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:03:52,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1223957222, now seen corresponding path program 1 times [2023-08-31 23:03:52,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:03:52,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160215549] [2023-08-31 23:03:52,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:03:52,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:03:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:52,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:03:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:03:52,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:03:52,320 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:03:52,320 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:03:52,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-31 23:03:52,320 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:03:52,321 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:03:52,321 WARN L233 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:03:52,321 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2023-08-31 23:03:52,461 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:03:52,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 940 places, 942 transitions, 3644 flow [2023-08-31 23:03:53,614 INFO L130 PetriNetUnfolder]: 203/2820 cut-off events. [2023-08-31 23:03:53,614 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 23:03:53,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3761 conditions, 2820 events. 203/2820 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 11450 event pairs, 0 based on Foata normal form. 0/2048 useless extension candidates. Maximal degree in co-relation 3637. Up to 82 conditions per place. [2023-08-31 23:03:53,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 940 places, 942 transitions, 3644 flow [2023-08-31 23:03:53,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 940 places, 942 transitions, 3644 flow [2023-08-31 23:03:53,801 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:03:53,801 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 940 places, 942 transitions, 3644 flow [2023-08-31 23:03:53,801 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 940 places, 942 transitions, 3644 flow [2023-08-31 23:03:53,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 940 places, 942 transitions, 3644 flow [2023-08-31 23:03:54,767 INFO L130 PetriNetUnfolder]: 203/2820 cut-off events. [2023-08-31 23:03:54,768 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 23:03:54,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3761 conditions, 2820 events. 203/2820 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 11450 event pairs, 0 based on Foata normal form. 0/2048 useless extension candidates. Maximal degree in co-relation 3637. Up to 82 conditions per place. [2023-08-31 23:03:55,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 801360 [2023-08-31 23:03:59,703 INFO L134 LiptonReduction]: Checked pairs total: 3887417 [2023-08-31 23:03:59,704 INFO L136 LiptonReduction]: Total number of compositions: 360 [2023-08-31 23:03:59,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:03:59,705 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:03:59,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:04:00,107 INFO L130 PetriNetUnfolder]: 151/1654 cut-off events. [2023-08-31 23:04:00,107 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 23:04:00,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:04:00,108 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 23:04:00,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:04:00,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:04:00,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1302385247, now seen corresponding path program 1 times [2023-08-31 23:04:00,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:04:00,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152953093] [2023-08-31 23:04:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:04:00,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:04:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:00,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:04:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:00,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:04:00,283 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:04:00,283 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:04:00,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-31 23:04:00,284 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:04:00,284 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:04:00,284 WARN L233 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:04:00,284 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2023-08-31 23:04:00,453 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:04:00,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 962 places, 964 transitions, 3773 flow [2023-08-31 23:04:01,591 INFO L130 PetriNetUnfolder]: 208/2889 cut-off events. [2023-08-31 23:04:01,591 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 23:04:01,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3874 conditions, 2889 events. 208/2889 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 11743 event pairs, 0 based on Foata normal form. 0/2098 useless extension candidates. Maximal degree in co-relation 3749. Up to 84 conditions per place. [2023-08-31 23:04:01,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 962 places, 964 transitions, 3773 flow [2023-08-31 23:04:01,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 962 places, 964 transitions, 3773 flow [2023-08-31 23:04:01,780 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:04:01,780 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 962 places, 964 transitions, 3773 flow [2023-08-31 23:04:01,780 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 962 places, 964 transitions, 3773 flow [2023-08-31 23:04:01,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 962 places, 964 transitions, 3773 flow [2023-08-31 23:04:02,822 INFO L130 PetriNetUnfolder]: 208/2889 cut-off events. [2023-08-31 23:04:02,822 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 23:04:02,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3874 conditions, 2889 events. 208/2889 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 11743 event pairs, 0 based on Foata normal form. 0/2098 useless extension candidates. Maximal degree in co-relation 3749. Up to 84 conditions per place. [2023-08-31 23:04:03,594 INFO L119 LiptonReduction]: Number of co-enabled transitions 840336 [2023-08-31 23:04:07,990 INFO L134 LiptonReduction]: Checked pairs total: 4100893 [2023-08-31 23:04:07,991 INFO L136 LiptonReduction]: Total number of compositions: 369 [2023-08-31 23:04:07,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:04:07,992 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:04:07,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:04:08,434 INFO L130 PetriNetUnfolder]: 154/1694 cut-off events. [2023-08-31 23:04:08,434 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 23:04:08,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:04:08,435 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 23:04:08,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:04:08,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:04:08,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1395303134, now seen corresponding path program 1 times [2023-08-31 23:04:08,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:04:08,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776411554] [2023-08-31 23:04:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:04:08,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:04:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:08,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:04:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:08,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:04:08,586 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:04:08,586 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:04:08,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-31 23:04:08,587 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:04:08,587 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:04:08,587 WARN L233 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:04:08,587 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2023-08-31 23:04:08,754 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:04:08,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 984 places, 986 transitions, 3904 flow [2023-08-31 23:04:09,864 INFO L130 PetriNetUnfolder]: 213/2958 cut-off events. [2023-08-31 23:04:09,864 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 23:04:10,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3988 conditions, 2958 events. 213/2958 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12030 event pairs, 0 based on Foata normal form. 0/2148 useless extension candidates. Maximal degree in co-relation 3862. Up to 86 conditions per place. [2023-08-31 23:04:10,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 984 places, 986 transitions, 3904 flow [2023-08-31 23:04:10,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 984 places, 986 transitions, 3904 flow [2023-08-31 23:04:10,075 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:04:10,075 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 984 places, 986 transitions, 3904 flow [2023-08-31 23:04:10,075 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 984 places, 986 transitions, 3904 flow [2023-08-31 23:04:10,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 984 places, 986 transitions, 3904 flow [2023-08-31 23:04:11,208 INFO L130 PetriNetUnfolder]: 213/2958 cut-off events. [2023-08-31 23:04:11,208 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 23:04:11,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3988 conditions, 2958 events. 213/2958 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12030 event pairs, 0 based on Foata normal form. 0/2148 useless extension candidates. Maximal degree in co-relation 3862. Up to 86 conditions per place. [2023-08-31 23:04:11,701 INFO L119 LiptonReduction]: Number of co-enabled transitions 880236 [2023-08-31 23:04:16,390 INFO L134 LiptonReduction]: Checked pairs total: 4223427 [2023-08-31 23:04:16,390 INFO L136 LiptonReduction]: Total number of compositions: 376 [2023-08-31 23:04:16,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:04:16,391 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:04:16,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:04:16,930 INFO L130 PetriNetUnfolder]: 158/1736 cut-off events. [2023-08-31 23:04:16,930 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 23:04:16,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:04:16,931 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 23:04:16,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:04:16,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:04:16,931 INFO L85 PathProgramCache]: Analyzing trace with hash -339194032, now seen corresponding path program 1 times [2023-08-31 23:04:16,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:04:16,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033324587] [2023-08-31 23:04:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:04:16,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:04:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:17,013 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:04:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:17,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:04:17,093 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:04:17,093 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:04:17,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-31 23:04:17,094 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:04:17,094 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:04:17,094 WARN L233 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:04:17,094 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2023-08-31 23:04:17,250 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:04:17,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1006 places, 1008 transitions, 4037 flow [2023-08-31 23:04:18,396 INFO L130 PetriNetUnfolder]: 218/3027 cut-off events. [2023-08-31 23:04:18,396 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 23:04:18,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4103 conditions, 3027 events. 218/3027 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12258 event pairs, 0 based on Foata normal form. 0/2198 useless extension candidates. Maximal degree in co-relation 3976. Up to 88 conditions per place. [2023-08-31 23:04:18,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 1006 places, 1008 transitions, 4037 flow [2023-08-31 23:04:18,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1006 places, 1008 transitions, 4037 flow [2023-08-31 23:04:18,613 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:04:18,613 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1006 places, 1008 transitions, 4037 flow [2023-08-31 23:04:18,613 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1006 places, 1008 transitions, 4037 flow [2023-08-31 23:04:18,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1006 places, 1008 transitions, 4037 flow [2023-08-31 23:04:19,844 INFO L130 PetriNetUnfolder]: 218/3027 cut-off events. [2023-08-31 23:04:19,844 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 23:04:19,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4103 conditions, 3027 events. 218/3027 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12258 event pairs, 0 based on Foata normal form. 0/2198 useless extension candidates. Maximal degree in co-relation 3976. Up to 88 conditions per place. [2023-08-31 23:04:20,336 INFO L119 LiptonReduction]: Number of co-enabled transitions 921060 [2023-08-31 23:04:25,007 INFO L134 LiptonReduction]: Checked pairs total: 3737823 [2023-08-31 23:04:25,007 INFO L136 LiptonReduction]: Total number of compositions: 385 [2023-08-31 23:04:25,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:04:25,009 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:04:25,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:04:25,579 INFO L130 PetriNetUnfolder]: 159/1772 cut-off events. [2023-08-31 23:04:25,579 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 23:04:25,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:04:25,579 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 23:04:25,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:04:25,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:04:25,581 INFO L85 PathProgramCache]: Analyzing trace with hash -527325526, now seen corresponding path program 1 times [2023-08-31 23:04:25,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:04:25,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413298920] [2023-08-31 23:04:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:04:25,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:04:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:25,653 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:04:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:25,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:04:25,753 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:04:25,753 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:04:25,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-31 23:04:25,754 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:04:25,754 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:04:25,754 WARN L233 ceAbstractionStarter]: 43 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:04:25,754 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 44 thread instances. [2023-08-31 23:04:25,890 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:04:25,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1028 places, 1030 transitions, 4172 flow [2023-08-31 23:04:27,084 INFO L130 PetriNetUnfolder]: 223/3096 cut-off events. [2023-08-31 23:04:27,084 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 23:04:27,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4219 conditions, 3096 events. 223/3096 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12520 event pairs, 0 based on Foata normal form. 0/2248 useless extension candidates. Maximal degree in co-relation 4091. Up to 90 conditions per place. [2023-08-31 23:04:27,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 1028 places, 1030 transitions, 4172 flow [2023-08-31 23:04:27,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1028 places, 1030 transitions, 4172 flow [2023-08-31 23:04:27,314 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:04:27,314 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1028 places, 1030 transitions, 4172 flow [2023-08-31 23:04:27,314 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1028 places, 1030 transitions, 4172 flow [2023-08-31 23:04:27,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1028 places, 1030 transitions, 4172 flow [2023-08-31 23:04:28,572 INFO L130 PetriNetUnfolder]: 223/3096 cut-off events. [2023-08-31 23:04:28,573 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 23:04:28,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4219 conditions, 3096 events. 223/3096 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12520 event pairs, 0 based on Foata normal form. 0/2248 useless extension candidates. Maximal degree in co-relation 4091. Up to 90 conditions per place. [2023-08-31 23:04:29,099 INFO L119 LiptonReduction]: Number of co-enabled transitions 962808 [2023-08-31 23:04:33,854 INFO L134 LiptonReduction]: Checked pairs total: 4052008 [2023-08-31 23:04:33,854 INFO L136 LiptonReduction]: Total number of compositions: 391 [2023-08-31 23:04:33,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:04:33,856 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:04:33,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:04:34,408 INFO L130 PetriNetUnfolder]: 171/1830 cut-off events. [2023-08-31 23:04:34,408 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 23:04:34,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:04:34,409 INFO L208 CegarLoopForPetriNet]: trace histogram [45, 44, 44, 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, 1] [2023-08-31 23:04:34,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:04:34,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:04:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash 757374760, now seen corresponding path program 1 times [2023-08-31 23:04:34,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:04:34,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503314888] [2023-08-31 23:04:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:04:34,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:04:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:34,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:04:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:34,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:04:34,561 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:04:34,561 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:04:34,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-31 23:04:34,561 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:04:34,562 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:04:34,562 WARN L233 ceAbstractionStarter]: 44 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:04:34,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 45 thread instances. [2023-08-31 23:04:34,742 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:04:34,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1050 places, 1052 transitions, 4309 flow [2023-08-31 23:04:36,047 INFO L130 PetriNetUnfolder]: 228/3165 cut-off events. [2023-08-31 23:04:36,047 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-08-31 23:04:36,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4336 conditions, 3165 events. 228/3165 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12828 event pairs, 0 based on Foata normal form. 0/2298 useless extension candidates. Maximal degree in co-relation 4207. Up to 92 conditions per place. [2023-08-31 23:04:36,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 1050 places, 1052 transitions, 4309 flow [2023-08-31 23:04:36,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1050 places, 1052 transitions, 4309 flow [2023-08-31 23:04:36,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:04:36,287 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1050 places, 1052 transitions, 4309 flow [2023-08-31 23:04:36,287 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1050 places, 1052 transitions, 4309 flow [2023-08-31 23:04:36,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1050 places, 1052 transitions, 4309 flow [2023-08-31 23:04:37,555 INFO L130 PetriNetUnfolder]: 228/3165 cut-off events. [2023-08-31 23:04:37,555 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-08-31 23:04:37,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4336 conditions, 3165 events. 228/3165 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12828 event pairs, 0 based on Foata normal form. 0/2298 useless extension candidates. Maximal degree in co-relation 4207. Up to 92 conditions per place. [2023-08-31 23:04:38,144 INFO L119 LiptonReduction]: Number of co-enabled transitions 1005480 [2023-08-31 23:04:43,096 INFO L134 LiptonReduction]: Checked pairs total: 4073897 [2023-08-31 23:04:43,096 INFO L136 LiptonReduction]: Total number of compositions: 399 [2023-08-31 23:04:43,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:04:43,097 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:04:43,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:04:43,634 INFO L130 PetriNetUnfolder]: 167/1856 cut-off events. [2023-08-31 23:04:43,635 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-08-31 23:04:43,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:04:43,635 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 45, 45, 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, 1, 1] [2023-08-31 23:04:43,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:04:43,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:04:43,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1842042683, now seen corresponding path program 1 times [2023-08-31 23:04:43,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:04:43,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365905552] [2023-08-31 23:04:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:04:43,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:04:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:43,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:04:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:43,802 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:04:43,803 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:04:43,803 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:04:43,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-31 23:04:43,803 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:04:43,804 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:04:43,804 WARN L233 ceAbstractionStarter]: 45 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:04:43,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 46 thread instances. [2023-08-31 23:04:43,951 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:04:43,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1072 places, 1074 transitions, 4448 flow [2023-08-31 23:04:45,258 INFO L130 PetriNetUnfolder]: 233/3234 cut-off events. [2023-08-31 23:04:45,259 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-08-31 23:04:45,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4454 conditions, 3234 events. 233/3234 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 13160 event pairs, 0 based on Foata normal form. 0/2348 useless extension candidates. Maximal degree in co-relation 4324. Up to 94 conditions per place. [2023-08-31 23:04:45,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 1072 places, 1074 transitions, 4448 flow [2023-08-31 23:04:45,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1072 places, 1074 transitions, 4448 flow [2023-08-31 23:04:45,510 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:04:45,510 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1072 places, 1074 transitions, 4448 flow [2023-08-31 23:04:45,511 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1072 places, 1074 transitions, 4448 flow [2023-08-31 23:04:45,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1072 places, 1074 transitions, 4448 flow [2023-08-31 23:04:46,804 INFO L130 PetriNetUnfolder]: 233/3234 cut-off events. [2023-08-31 23:04:46,804 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-08-31 23:04:46,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4454 conditions, 3234 events. 233/3234 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 13160 event pairs, 0 based on Foata normal form. 0/2348 useless extension candidates. Maximal degree in co-relation 4324. Up to 94 conditions per place. [2023-08-31 23:04:47,481 INFO L119 LiptonReduction]: Number of co-enabled transitions 1049076 [2023-08-31 23:04:52,646 INFO L134 LiptonReduction]: Checked pairs total: 5231107 [2023-08-31 23:04:52,646 INFO L136 LiptonReduction]: Total number of compositions: 404 [2023-08-31 23:04:52,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:04:52,648 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:04:52,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:04:53,197 INFO L130 PetriNetUnfolder]: 178/1912 cut-off events. [2023-08-31 23:04:53,197 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-08-31 23:04:53,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:04:53,197 INFO L208 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 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, 1, 1, 1] [2023-08-31 23:04:53,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:04:53,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:04:53,198 INFO L85 PathProgramCache]: Analyzing trace with hash 422985960, now seen corresponding path program 1 times [2023-08-31 23:04:53,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:04:53,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826399893] [2023-08-31 23:04:53,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:04:53,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:04:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:53,271 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:04:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:04:53,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:04:53,359 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:04:53,359 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:04:53,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-31 23:04:53,359 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:04:53,359 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:04:53,360 WARN L233 ceAbstractionStarter]: 46 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:04:53,360 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 47 thread instances. [2023-08-31 23:04:53,517 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:04:53,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1094 places, 1096 transitions, 4589 flow [2023-08-31 23:04:55,122 INFO L130 PetriNetUnfolder]: 238/3303 cut-off events. [2023-08-31 23:04:55,122 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-08-31 23:04:55,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4573 conditions, 3303 events. 238/3303 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 13474 event pairs, 0 based on Foata normal form. 0/2398 useless extension candidates. Maximal degree in co-relation 4442. Up to 96 conditions per place. [2023-08-31 23:04:55,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 1094 places, 1096 transitions, 4589 flow [2023-08-31 23:04:55,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1094 places, 1096 transitions, 4589 flow [2023-08-31 23:04:55,286 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:04:55,286 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1094 places, 1096 transitions, 4589 flow [2023-08-31 23:04:55,286 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1094 places, 1096 transitions, 4589 flow [2023-08-31 23:04:55,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1094 places, 1096 transitions, 4589 flow [2023-08-31 23:04:56,670 INFO L130 PetriNetUnfolder]: 238/3303 cut-off events. [2023-08-31 23:04:56,670 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-08-31 23:04:56,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4573 conditions, 3303 events. 238/3303 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 13474 event pairs, 0 based on Foata normal form. 0/2398 useless extension candidates. Maximal degree in co-relation 4442. Up to 96 conditions per place. [2023-08-31 23:04:57,444 INFO L119 LiptonReduction]: Number of co-enabled transitions 1093596 [2023-08-31 23:05:02,647 INFO L134 LiptonReduction]: Checked pairs total: 4456029 [2023-08-31 23:05:02,647 INFO L136 LiptonReduction]: Total number of compositions: 413 [2023-08-31 23:05:02,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:05:02,649 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:05:02,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:05:03,241 INFO L130 PetriNetUnfolder]: 177/1943 cut-off events. [2023-08-31 23:05:03,242 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-08-31 23:05:03,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:05:03,242 INFO L208 CegarLoopForPetriNet]: trace histogram [48, 47, 47, 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, 1, 1, 1, 1] [2023-08-31 23:05:03,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:05:03,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:05:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash 717067254, now seen corresponding path program 1 times [2023-08-31 23:05:03,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:05:03,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577796740] [2023-08-31 23:05:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:05:03,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:05:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:05:03,331 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:05:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:05:03,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:05:03,463 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:05:03,463 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:05:03,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-31 23:05:03,463 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:05:03,464 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:05:03,464 WARN L233 ceAbstractionStarter]: 47 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:05:03,464 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 48 thread instances. [2023-08-31 23:05:03,648 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:05:03,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1116 places, 1118 transitions, 4732 flow [2023-08-31 23:05:05,137 INFO L130 PetriNetUnfolder]: 243/3372 cut-off events. [2023-08-31 23:05:05,137 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-08-31 23:05:05,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4693 conditions, 3372 events. 243/3372 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 13752 event pairs, 0 based on Foata normal form. 0/2448 useless extension candidates. Maximal degree in co-relation 4561. Up to 98 conditions per place. [2023-08-31 23:05:05,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 1116 places, 1118 transitions, 4732 flow [2023-08-31 23:05:05,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1116 places, 1118 transitions, 4732 flow [2023-08-31 23:05:05,370 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:05:05,370 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1116 places, 1118 transitions, 4732 flow [2023-08-31 23:05:05,370 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1116 places, 1118 transitions, 4732 flow [2023-08-31 23:05:05,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1116 places, 1118 transitions, 4732 flow [2023-08-31 23:05:06,934 INFO L130 PetriNetUnfolder]: 243/3372 cut-off events. [2023-08-31 23:05:06,935 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-08-31 23:05:07,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4693 conditions, 3372 events. 243/3372 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 13752 event pairs, 0 based on Foata normal form. 0/2448 useless extension candidates. Maximal degree in co-relation 4561. Up to 98 conditions per place. [2023-08-31 23:05:07,511 INFO L119 LiptonReduction]: Number of co-enabled transitions 1139040 [2023-08-31 23:05:12,786 INFO L134 LiptonReduction]: Checked pairs total: 5509567 [2023-08-31 23:05:12,787 INFO L136 LiptonReduction]: Total number of compositions: 424 [2023-08-31 23:05:12,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:05:12,788 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:05:12,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:05:13,429 INFO L130 PetriNetUnfolder]: 182/1988 cut-off events. [2023-08-31 23:05:13,429 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-08-31 23:05:13,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:05:13,429 INFO L208 CegarLoopForPetriNet]: trace histogram [49, 48, 48, 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, 1, 1, 1, 1, 1] [2023-08-31 23:05:13,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:05:13,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:05:13,430 INFO L85 PathProgramCache]: Analyzing trace with hash 670839297, now seen corresponding path program 1 times [2023-08-31 23:05:13,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:05:13,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333621823] [2023-08-31 23:05:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:05:13,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:05:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:05:13,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:05:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:05:13,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:05:13,619 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:05:13,620 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:05:13,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-31 23:05:13,620 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:05:13,620 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:05:13,621 WARN L233 ceAbstractionStarter]: 48 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:05:13,621 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 49 thread instances. [2023-08-31 23:05:13,772 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:05:13,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1138 places, 1140 transitions, 4877 flow [2023-08-31 23:05:15,448 INFO L130 PetriNetUnfolder]: 248/3441 cut-off events. [2023-08-31 23:05:15,448 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-08-31 23:05:15,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4814 conditions, 3441 events. 248/3441 cut-off events. For 20776/20776 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14057 event pairs, 0 based on Foata normal form. 0/2498 useless extension candidates. Maximal degree in co-relation 4681. Up to 100 conditions per place. [2023-08-31 23:05:15,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 1138 places, 1140 transitions, 4877 flow [2023-08-31 23:05:15,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1138 places, 1140 transitions, 4877 flow [2023-08-31 23:05:15,735 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:05:15,735 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1138 places, 1140 transitions, 4877 flow [2023-08-31 23:05:15,735 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1138 places, 1140 transitions, 4877 flow [2023-08-31 23:05:15,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1138 places, 1140 transitions, 4877 flow [2023-08-31 23:05:17,244 INFO L130 PetriNetUnfolder]: 248/3441 cut-off events. [2023-08-31 23:05:17,245 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-08-31 23:05:17,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4814 conditions, 3441 events. 248/3441 cut-off events. For 20776/20776 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14057 event pairs, 0 based on Foata normal form. 0/2498 useless extension candidates. Maximal degree in co-relation 4681. Up to 100 conditions per place. [2023-08-31 23:05:18,048 INFO L119 LiptonReduction]: Number of co-enabled transitions 1185408 [2023-08-31 23:05:23,504 INFO L134 LiptonReduction]: Checked pairs total: 5938448 [2023-08-31 23:05:23,504 INFO L136 LiptonReduction]: Total number of compositions: 432 [2023-08-31 23:05:23,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:05:23,506 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:05:23,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:05:24,123 INFO L130 PetriNetUnfolder]: 190/2038 cut-off events. [2023-08-31 23:05:24,123 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-08-31 23:05:24,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:05:24,123 INFO L208 CegarLoopForPetriNet]: trace histogram [50, 49, 49, 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, 1, 1, 1, 1, 1, 1] [2023-08-31 23:05:24,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:05:24,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:05:24,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1476351370, now seen corresponding path program 1 times [2023-08-31 23:05:24,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:05:24,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197257848] [2023-08-31 23:05:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:05:24,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:05:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:05:24,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:05:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:05:24,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:05:24,309 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:05:24,310 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:05:24,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-31 23:05:24,310 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:05:24,310 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:05:24,310 WARN L233 ceAbstractionStarter]: 49 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:05:24,310 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 50 thread instances. [2023-08-31 23:05:24,501 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:05:24,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1160 places, 1162 transitions, 5024 flow [2023-08-31 23:05:26,063 INFO L130 PetriNetUnfolder]: 253/3510 cut-off events. [2023-08-31 23:05:26,064 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-08-31 23:05:26,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4936 conditions, 3510 events. 253/3510 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14327 event pairs, 0 based on Foata normal form. 0/2548 useless extension candidates. Maximal degree in co-relation 4802. Up to 102 conditions per place. [2023-08-31 23:05:26,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 1160 places, 1162 transitions, 5024 flow [2023-08-31 23:05:26,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1160 places, 1162 transitions, 5024 flow [2023-08-31 23:05:26,356 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:05:26,357 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1160 places, 1162 transitions, 5024 flow [2023-08-31 23:05:26,357 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1160 places, 1162 transitions, 5024 flow [2023-08-31 23:05:26,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1160 places, 1162 transitions, 5024 flow [2023-08-31 23:05:27,955 INFO L130 PetriNetUnfolder]: 253/3510 cut-off events. [2023-08-31 23:05:27,955 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-08-31 23:05:28,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4936 conditions, 3510 events. 253/3510 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14327 event pairs, 0 based on Foata normal form. 0/2548 useless extension candidates. Maximal degree in co-relation 4802. Up to 102 conditions per place. [2023-08-31 23:05:28,935 INFO L119 LiptonReduction]: Number of co-enabled transitions 1232700 [2023-08-31 23:05:34,763 INFO L134 LiptonReduction]: Checked pairs total: 6107951 [2023-08-31 23:05:34,763 INFO L136 LiptonReduction]: Total number of compositions: 436 [2023-08-31 23:05:34,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:05:34,765 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:05:34,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:05:35,478 INFO L130 PetriNetUnfolder]: 191/2074 cut-off events. [2023-08-31 23:05:35,479 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-08-31 23:05:35,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:05:35,479 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 50, 50, 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:05:35,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:05:35,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:05:35,480 INFO L85 PathProgramCache]: Analyzing trace with hash 530064279, now seen corresponding path program 1 times [2023-08-31 23:05:35,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:05:35,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610011407] [2023-08-31 23:05:35,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:05:35,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:05:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:05:35,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:05:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:05:35,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:05:35,705 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:05:35,705 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:05:35,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-31 23:05:35,706 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:05:35,706 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:05:35,706 WARN L233 ceAbstractionStarter]: 50 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:05:35,706 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 51 thread instances. [2023-08-31 23:05:35,935 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:05:35,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1182 places, 1184 transitions, 5173 flow [2023-08-31 23:05:38,149 INFO L130 PetriNetUnfolder]: 258/3579 cut-off events. [2023-08-31 23:05:38,149 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-08-31 23:05:38,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5059 conditions, 3579 events. 258/3579 cut-off events. For 23375/23375 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14625 event pairs, 0 based on Foata normal form. 0/2598 useless extension candidates. Maximal degree in co-relation 4924. Up to 104 conditions per place. [2023-08-31 23:05:38,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 1182 places, 1184 transitions, 5173 flow [2023-08-31 23:05:38,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1182 places, 1184 transitions, 5173 flow [2023-08-31 23:05:38,340 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:05:38,341 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1182 places, 1184 transitions, 5173 flow [2023-08-31 23:05:38,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1182 places, 1184 transitions, 5173 flow [2023-08-31 23:05:38,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1182 places, 1184 transitions, 5173 flow [2023-08-31 23:05:40,226 INFO L130 PetriNetUnfolder]: 258/3579 cut-off events. [2023-08-31 23:05:40,227 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-08-31 23:05:40,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5059 conditions, 3579 events. 258/3579 cut-off events. For 23375/23375 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14625 event pairs, 0 based on Foata normal form. 0/2598 useless extension candidates. Maximal degree in co-relation 4924. Up to 104 conditions per place. [2023-08-31 23:05:40,970 INFO L119 LiptonReduction]: Number of co-enabled transitions 1280916 [2023-08-31 23:05:46,707 INFO L134 LiptonReduction]: Checked pairs total: 5338377 [2023-08-31 23:05:46,707 INFO L136 LiptonReduction]: Total number of compositions: 445 [2023-08-31 23:05:46,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:05:46,708 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:05:46,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:05:47,477 INFO L130 PetriNetUnfolder]: 193/2112 cut-off events. [2023-08-31 23:05:47,477 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-08-31 23:05:47,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:05:47,478 INFO L208 CegarLoopForPetriNet]: trace histogram [52, 51, 51, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:05:47,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:05:47,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:05:47,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1853411445, now seen corresponding path program 1 times [2023-08-31 23:05:47,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:05:47,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305348741] [2023-08-31 23:05:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:05:47,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:05:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:05:47,578 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:05:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:05:47,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:05:47,678 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:05:47,678 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:05:47,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-31 23:05:47,678 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:05:47,679 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:05:47,679 WARN L233 ceAbstractionStarter]: 51 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:05:47,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 52 thread instances. [2023-08-31 23:05:47,946 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:05:47,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1204 places, 1206 transitions, 5324 flow [2023-08-31 23:05:49,993 INFO L130 PetriNetUnfolder]: 263/3648 cut-off events. [2023-08-31 23:05:49,993 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-08-31 23:05:50,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5183 conditions, 3648 events. 263/3648 cut-off events. For 24752/24752 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14902 event pairs, 0 based on Foata normal form. 0/2648 useless extension candidates. Maximal degree in co-relation 5047. Up to 106 conditions per place. [2023-08-31 23:05:50,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 1204 places, 1206 transitions, 5324 flow [2023-08-31 23:05:50,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1204 places, 1206 transitions, 5324 flow [2023-08-31 23:05:50,187 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:05:50,188 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1204 places, 1206 transitions, 5324 flow [2023-08-31 23:05:50,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1204 places, 1206 transitions, 5324 flow [2023-08-31 23:05:50,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1204 places, 1206 transitions, 5324 flow [2023-08-31 23:05:52,197 INFO L130 PetriNetUnfolder]: 263/3648 cut-off events. [2023-08-31 23:05:52,198 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-08-31 23:05:52,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5183 conditions, 3648 events. 263/3648 cut-off events. For 24752/24752 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14902 event pairs, 0 based on Foata normal form. 0/2648 useless extension candidates. Maximal degree in co-relation 5047. Up to 106 conditions per place. [2023-08-31 23:05:52,990 INFO L119 LiptonReduction]: Number of co-enabled transitions 1330056 [2023-08-31 23:05:59,071 INFO L134 LiptonReduction]: Checked pairs total: 5490830 [2023-08-31 23:05:59,072 INFO L136 LiptonReduction]: Total number of compositions: 451 [2023-08-31 23:05:59,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:05:59,073 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:05:59,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:05:59,822 INFO L130 PetriNetUnfolder]: 201/2161 cut-off events. [2023-08-31 23:05:59,822 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-08-31 23:05:59,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:05:59,823 INFO L208 CegarLoopForPetriNet]: trace histogram [53, 52, 52, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:05:59,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:05:59,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:05:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1556601497, now seen corresponding path program 1 times [2023-08-31 23:05:59,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:05:59,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605250045] [2023-08-31 23:05:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:05:59,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:05:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:05:59,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:05:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:06:00,016 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:06:00,017 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:06:00,017 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:06:00,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-31 23:06:00,017 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:06:00,018 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:06:00,018 WARN L233 ceAbstractionStarter]: 52 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:06:00,018 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 53 thread instances. [2023-08-31 23:06:00,284 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:06:00,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1226 places, 1228 transitions, 5477 flow [2023-08-31 23:06:02,449 INFO L130 PetriNetUnfolder]: 268/3717 cut-off events. [2023-08-31 23:06:02,449 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-08-31 23:06:02,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5308 conditions, 3717 events. 268/3717 cut-off events. For 26182/26182 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 15168 event pairs, 0 based on Foata normal form. 0/2698 useless extension candidates. Maximal degree in co-relation 5171. Up to 108 conditions per place. [2023-08-31 23:06:02,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 1226 places, 1228 transitions, 5477 flow [2023-08-31 23:06:02,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1226 places, 1228 transitions, 5477 flow [2023-08-31 23:06:02,653 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:06:02,653 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1226 places, 1228 transitions, 5477 flow [2023-08-31 23:06:02,653 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1226 places, 1228 transitions, 5477 flow [2023-08-31 23:06:02,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1226 places, 1228 transitions, 5477 flow [2023-08-31 23:06:04,735 INFO L130 PetriNetUnfolder]: 268/3717 cut-off events. [2023-08-31 23:06:04,736 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-08-31 23:06:04,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5308 conditions, 3717 events. 268/3717 cut-off events. For 26182/26182 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 15168 event pairs, 0 based on Foata normal form. 0/2698 useless extension candidates. Maximal degree in co-relation 5171. Up to 108 conditions per place. [2023-08-31 23:06:05,504 INFO L119 LiptonReduction]: Number of co-enabled transitions 1380120 [2023-08-31 23:06:11,574 INFO L134 LiptonReduction]: Checked pairs total: 6925474 [2023-08-31 23:06:11,574 INFO L136 LiptonReduction]: Total number of compositions: 458 [2023-08-31 23:06:11,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:06:11,575 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:06:11,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:06:12,512 INFO L130 PetriNetUnfolder]: 206/2206 cut-off events. [2023-08-31 23:06:12,513 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-08-31 23:06:12,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:06:12,513 INFO L208 CegarLoopForPetriNet]: trace histogram [54, 53, 53, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:06:12,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:06:12,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:06:12,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2033946594, now seen corresponding path program 1 times [2023-08-31 23:06:12,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:06:12,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513803639] [2023-08-31 23:06:12,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:06:12,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:06:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:06:12,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:06:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:06:12,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:06:12,718 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:06:12,718 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:06:12,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-31 23:06:12,718 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:06:12,718 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:06:12,718 WARN L233 ceAbstractionStarter]: 53 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:06:12,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 54 thread instances. [2023-08-31 23:06:12,898 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:06:12,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1248 places, 1250 transitions, 5632 flow [2023-08-31 23:06:15,222 INFO L130 PetriNetUnfolder]: 273/3786 cut-off events. [2023-08-31 23:06:15,222 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-08-31 23:06:15,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5434 conditions, 3786 events. 273/3786 cut-off events. For 27666/27666 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 15503 event pairs, 0 based on Foata normal form. 0/2748 useless extension candidates. Maximal degree in co-relation 5296. Up to 110 conditions per place. [2023-08-31 23:06:15,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 1248 places, 1250 transitions, 5632 flow [2023-08-31 23:06:15,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1248 places, 1250 transitions, 5632 flow [2023-08-31 23:06:15,443 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:06:15,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1248 places, 1250 transitions, 5632 flow [2023-08-31 23:06:15,443 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1248 places, 1250 transitions, 5632 flow [2023-08-31 23:06:15,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1248 places, 1250 transitions, 5632 flow [2023-08-31 23:06:17,641 INFO L130 PetriNetUnfolder]: 273/3786 cut-off events. [2023-08-31 23:06:17,641 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-08-31 23:06:17,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5434 conditions, 3786 events. 273/3786 cut-off events. For 27666/27666 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 15503 event pairs, 0 based on Foata normal form. 0/2748 useless extension candidates. Maximal degree in co-relation 5296. Up to 110 conditions per place. [2023-08-31 23:06:18,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 1431108 [2023-08-31 23:06:24,562 INFO L134 LiptonReduction]: Checked pairs total: 5994860 [2023-08-31 23:06:24,562 INFO L136 LiptonReduction]: Total number of compositions: 468 [2023-08-31 23:06:24,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:06:24,563 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:06:24,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:06:25,384 INFO L130 PetriNetUnfolder]: 207/2241 cut-off events. [2023-08-31 23:06:25,384 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-08-31 23:06:25,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:06:25,384 INFO L208 CegarLoopForPetriNet]: trace histogram [55, 54, 54, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:06:25,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:06:25,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:06:25,385 INFO L85 PathProgramCache]: Analyzing trace with hash 560028796, now seen corresponding path program 1 times [2023-08-31 23:06:25,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:06:25,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051288686] [2023-08-31 23:06:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:06:25,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:06:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:06:25,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:06:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:06:25,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:06:25,570 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:06:25,571 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:06:25,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-31 23:06:25,571 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:06:25,571 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:06:25,571 WARN L233 ceAbstractionStarter]: 54 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:06:25,571 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 55 thread instances. [2023-08-31 23:06:25,892 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:06:25,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1270 places, 1272 transitions, 5789 flow [2023-08-31 23:06:28,026 INFO L130 PetriNetUnfolder]: 278/3855 cut-off events. [2023-08-31 23:06:28,026 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-08-31 23:06:28,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5561 conditions, 3855 events. 278/3855 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 15839 event pairs, 0 based on Foata normal form. 0/2798 useless extension candidates. Maximal degree in co-relation 5422. Up to 112 conditions per place. [2023-08-31 23:06:28,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 1270 places, 1272 transitions, 5789 flow [2023-08-31 23:06:28,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1270 places, 1272 transitions, 5789 flow [2023-08-31 23:06:28,279 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:06:28,279 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1270 places, 1272 transitions, 5789 flow [2023-08-31 23:06:28,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1270 places, 1272 transitions, 5789 flow [2023-08-31 23:06:28,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1270 places, 1272 transitions, 5789 flow [2023-08-31 23:06:30,666 INFO L130 PetriNetUnfolder]: 278/3855 cut-off events. [2023-08-31 23:06:30,667 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-08-31 23:06:30,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5561 conditions, 3855 events. 278/3855 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 15839 event pairs, 0 based on Foata normal form. 0/2798 useless extension candidates. Maximal degree in co-relation 5422. Up to 112 conditions per place. [2023-08-31 23:06:31,616 INFO L119 LiptonReduction]: Number of co-enabled transitions 1483020 [2023-08-31 23:06:37,955 INFO L134 LiptonReduction]: Checked pairs total: 6146782 [2023-08-31 23:06:37,955 INFO L136 LiptonReduction]: Total number of compositions: 478 [2023-08-31 23:06:37,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:06:37,956 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:06:37,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:06:38,886 INFO L130 PetriNetUnfolder]: 210/2282 cut-off events. [2023-08-31 23:06:38,887 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-08-31 23:06:38,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:06:38,887 INFO L208 CegarLoopForPetriNet]: trace histogram [56, 55, 55, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:06:38,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:06:38,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:06:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2126311682, now seen corresponding path program 1 times [2023-08-31 23:06:38,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:06:38,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405545038] [2023-08-31 23:06:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:06:38,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:06:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:06:38,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:06:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:06:39,144 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:06:39,144 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:06:39,144 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:06:39,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-31 23:06:39,144 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:06:39,145 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:06:39,145 WARN L233 ceAbstractionStarter]: 55 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:06:39,145 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 56 thread instances. [2023-08-31 23:06:39,323 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:06:39,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1292 places, 1294 transitions, 5948 flow [2023-08-31 23:06:41,707 INFO L130 PetriNetUnfolder]: 283/3924 cut-off events. [2023-08-31 23:06:41,707 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-08-31 23:06:41,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5689 conditions, 3924 events. 283/3924 cut-off events. For 30800/30800 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 16048 event pairs, 0 based on Foata normal form. 0/2848 useless extension candidates. Maximal degree in co-relation 5549. Up to 114 conditions per place. [2023-08-31 23:06:41,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 1292 places, 1294 transitions, 5948 flow [2023-08-31 23:06:41,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1292 places, 1294 transitions, 5948 flow [2023-08-31 23:06:41,944 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:06:41,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1292 places, 1294 transitions, 5948 flow [2023-08-31 23:06:41,944 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1292 places, 1294 transitions, 5948 flow [2023-08-31 23:06:41,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1292 places, 1294 transitions, 5948 flow [2023-08-31 23:06:44,229 INFO L130 PetriNetUnfolder]: 283/3924 cut-off events. [2023-08-31 23:06:44,229 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-08-31 23:06:44,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5689 conditions, 3924 events. 283/3924 cut-off events. For 30800/30800 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 16048 event pairs, 0 based on Foata normal form. 0/2848 useless extension candidates. Maximal degree in co-relation 5549. Up to 114 conditions per place. [2023-08-31 23:06:45,237 INFO L119 LiptonReduction]: Number of co-enabled transitions 1535856 [2023-08-31 23:06:51,689 INFO L134 LiptonReduction]: Checked pairs total: 6450316 [2023-08-31 23:06:51,689 INFO L136 LiptonReduction]: Total number of compositions: 489 [2023-08-31 23:06:51,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:06:51,691 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:06:51,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:06:52,643 INFO L130 PetriNetUnfolder]: 214/2324 cut-off events. [2023-08-31 23:06:52,643 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-08-31 23:06:52,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:06:52,643 INFO L208 CegarLoopForPetriNet]: trace histogram [57, 56, 56, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:06:52,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:06:52,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:06:52,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2090384817, now seen corresponding path program 1 times [2023-08-31 23:06:52,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:06:52,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636278897] [2023-08-31 23:06:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:06:52,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:06:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:06:52,757 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:06:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:06:52,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:06:52,953 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:06:52,953 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:06:52,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-31 23:06:52,954 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:06:52,954 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:06:52,954 WARN L233 ceAbstractionStarter]: 56 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:06:52,954 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 57 thread instances. [2023-08-31 23:06:53,135 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:06:53,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1314 places, 1316 transitions, 6109 flow [2023-08-31 23:06:55,685 INFO L130 PetriNetUnfolder]: 288/3993 cut-off events. [2023-08-31 23:06:55,685 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-08-31 23:06:55,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 3993 events. 288/3993 cut-off events. For 32452/32452 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 16263 event pairs, 0 based on Foata normal form. 0/2898 useless extension candidates. Maximal degree in co-relation 5677. Up to 116 conditions per place. [2023-08-31 23:06:55,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 1314 places, 1316 transitions, 6109 flow [2023-08-31 23:06:55,948 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1314 places, 1316 transitions, 6109 flow [2023-08-31 23:06:55,948 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:06:55,948 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1314 places, 1316 transitions, 6109 flow [2023-08-31 23:06:55,948 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1314 places, 1316 transitions, 6109 flow [2023-08-31 23:06:55,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1314 places, 1316 transitions, 6109 flow [2023-08-31 23:06:58,487 INFO L130 PetriNetUnfolder]: 288/3993 cut-off events. [2023-08-31 23:06:58,488 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-08-31 23:06:58,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 3993 events. 288/3993 cut-off events. For 32452/32452 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 16263 event pairs, 0 based on Foata normal form. 0/2898 useless extension candidates. Maximal degree in co-relation 5677. Up to 116 conditions per place. [2023-08-31 23:06:59,303 INFO L119 LiptonReduction]: Number of co-enabled transitions 1589616 [2023-08-31 23:07:05,761 INFO L134 LiptonReduction]: Checked pairs total: 7731130 [2023-08-31 23:07:05,761 INFO L136 LiptonReduction]: Total number of compositions: 490 [2023-08-31 23:07:05,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:07:05,762 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:07:05,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:07:06,676 INFO L130 PetriNetUnfolder]: 212/2353 cut-off events. [2023-08-31 23:07:06,676 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-08-31 23:07:06,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:07:06,677 INFO L208 CegarLoopForPetriNet]: trace histogram [58, 57, 57, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:07:06,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:07:06,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:07:06,677 INFO L85 PathProgramCache]: Analyzing trace with hash 506079619, now seen corresponding path program 1 times [2023-08-31 23:07:06,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:07:06,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702064683] [2023-08-31 23:07:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:07:06,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:07:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:07:06,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:07:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:07:06,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:07:06,930 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:07:06,930 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:07:06,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-31 23:07:06,930 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:07:06,930 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:07:06,931 WARN L233 ceAbstractionStarter]: 57 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:07:06,931 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 58 thread instances. [2023-08-31 23:07:07,254 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:07:07,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1336 places, 1338 transitions, 6272 flow [2023-08-31 23:07:09,918 INFO L130 PetriNetUnfolder]: 293/4062 cut-off events. [2023-08-31 23:07:09,918 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-08-31 23:07:10,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5948 conditions, 4062 events. 293/4062 cut-off events. For 34162/34162 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 16671 event pairs, 0 based on Foata normal form. 0/2948 useless extension candidates. Maximal degree in co-relation 5806. Up to 118 conditions per place. [2023-08-31 23:07:10,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 1336 places, 1338 transitions, 6272 flow [2023-08-31 23:07:10,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1336 places, 1338 transitions, 6272 flow [2023-08-31 23:07:10,204 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:07:10,204 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1336 places, 1338 transitions, 6272 flow [2023-08-31 23:07:10,205 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1336 places, 1338 transitions, 6272 flow [2023-08-31 23:07:10,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1336 places, 1338 transitions, 6272 flow [2023-08-31 23:07:12,842 INFO L130 PetriNetUnfolder]: 293/4062 cut-off events. [2023-08-31 23:07:12,842 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-08-31 23:07:13,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5948 conditions, 4062 events. 293/4062 cut-off events. For 34162/34162 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 16671 event pairs, 0 based on Foata normal form. 0/2948 useless extension candidates. Maximal degree in co-relation 5806. Up to 118 conditions per place. [2023-08-31 23:07:13,884 INFO L119 LiptonReduction]: Number of co-enabled transitions 1644300 [2023-08-31 23:07:21,067 INFO L134 LiptonReduction]: Checked pairs total: 8039180 [2023-08-31 23:07:21,068 INFO L136 LiptonReduction]: Total number of compositions: 506 [2023-08-31 23:07:21,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:07:21,069 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:07:21,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:07:22,056 INFO L130 PetriNetUnfolder]: 222/2408 cut-off events. [2023-08-31 23:07:22,056 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-08-31 23:07:22,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:07:22,056 INFO L208 CegarLoopForPetriNet]: trace histogram [59, 58, 58, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:07:22,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:07:22,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:07:22,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1711167206, now seen corresponding path program 1 times [2023-08-31 23:07:22,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:07:22,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346016270] [2023-08-31 23:07:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:07:22,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:07:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:07:22,217 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:07:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:07:22,343 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:07:22,344 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:07:22,344 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:07:22,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-31 23:07:22,344 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:07:22,344 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:07:22,344 WARN L233 ceAbstractionStarter]: 58 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:07:22,344 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 59 thread instances. [2023-08-31 23:07:22,525 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:07:22,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1358 places, 1360 transitions, 6437 flow [2023-08-31 23:07:25,005 INFO L130 PetriNetUnfolder]: 298/4131 cut-off events. [2023-08-31 23:07:25,006 INFO L131 PetriNetUnfolder]: For 35931/35931 co-relation queries the response was YES. [2023-08-31 23:07:25,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6079 conditions, 4131 events. 298/4131 cut-off events. For 35931/35931 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 16891 event pairs, 0 based on Foata normal form. 0/2998 useless extension candidates. Maximal degree in co-relation 5936. Up to 120 conditions per place. [2023-08-31 23:07:25,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 1358 places, 1360 transitions, 6437 flow [2023-08-31 23:07:25,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1358 places, 1360 transitions, 6437 flow [2023-08-31 23:07:25,308 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:07:25,308 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1358 places, 1360 transitions, 6437 flow [2023-08-31 23:07:25,309 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1358 places, 1360 transitions, 6437 flow [2023-08-31 23:07:25,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1358 places, 1360 transitions, 6437 flow [2023-08-31 23:07:28,007 INFO L130 PetriNetUnfolder]: 298/4131 cut-off events. [2023-08-31 23:07:28,007 INFO L131 PetriNetUnfolder]: For 35931/35931 co-relation queries the response was YES. [2023-08-31 23:07:28,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6079 conditions, 4131 events. 298/4131 cut-off events. For 35931/35931 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 16891 event pairs, 0 based on Foata normal form. 0/2998 useless extension candidates. Maximal degree in co-relation 5936. Up to 120 conditions per place. [2023-08-31 23:07:29,115 INFO L119 LiptonReduction]: Number of co-enabled transitions 1699908 [2023-08-31 23:07:36,070 INFO L134 LiptonReduction]: Checked pairs total: 8377077 [2023-08-31 23:07:36,070 INFO L136 LiptonReduction]: Total number of compositions: 515 [2023-08-31 23:07:36,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:07:36,071 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:07:36,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:07:37,182 INFO L130 PetriNetUnfolder]: 225/2448 cut-off events. [2023-08-31 23:07:37,183 INFO L131 PetriNetUnfolder]: For 35931/35931 co-relation queries the response was YES. [2023-08-31 23:07:37,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:07:37,183 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 59, 59, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:07:37,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:07:37,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:07:37,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1971626073, now seen corresponding path program 1 times [2023-08-31 23:07:37,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:07:37,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500252646] [2023-08-31 23:07:37,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:07:37,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:07:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:07:37,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:07:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:07:37,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:07:37,465 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:07:37,465 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:07:37,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-31 23:07:37,466 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:07:37,466 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:07:37,466 WARN L233 ceAbstractionStarter]: 59 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:07:37,466 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 60 thread instances. [2023-08-31 23:07:37,658 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:07:37,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1380 places, 1382 transitions, 6604 flow [2023-08-31 23:07:40,336 INFO L130 PetriNetUnfolder]: 303/4200 cut-off events. [2023-08-31 23:07:40,336 INFO L131 PetriNetUnfolder]: For 37760/37760 co-relation queries the response was YES. [2023-08-31 23:07:40,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6211 conditions, 4200 events. 303/4200 cut-off events. For 37760/37760 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 17145 event pairs, 0 based on Foata normal form. 0/3048 useless extension candidates. Maximal degree in co-relation 6067. Up to 122 conditions per place. [2023-08-31 23:07:40,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 1380 places, 1382 transitions, 6604 flow [2023-08-31 23:07:40,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1380 places, 1382 transitions, 6604 flow [2023-08-31 23:07:40,616 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:07:40,616 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1380 places, 1382 transitions, 6604 flow [2023-08-31 23:07:40,616 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1380 places, 1382 transitions, 6604 flow [2023-08-31 23:07:40,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1380 places, 1382 transitions, 6604 flow [2023-08-31 23:07:43,292 INFO L130 PetriNetUnfolder]: 303/4200 cut-off events. [2023-08-31 23:07:43,292 INFO L131 PetriNetUnfolder]: For 37760/37760 co-relation queries the response was YES. [2023-08-31 23:07:43,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6211 conditions, 4200 events. 303/4200 cut-off events. For 37760/37760 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 17145 event pairs, 0 based on Foata normal form. 0/3048 useless extension candidates. Maximal degree in co-relation 6067. Up to 122 conditions per place. [2023-08-31 23:07:44,202 INFO L119 LiptonReduction]: Number of co-enabled transitions 1756440 [2023-08-31 23:07:51,222 INFO L134 LiptonReduction]: Checked pairs total: 8668316 [2023-08-31 23:07:51,222 INFO L136 LiptonReduction]: Total number of compositions: 516 [2023-08-31 23:07:51,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:07:51,223 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:07:51,223 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:07:52,226 INFO L130 PetriNetUnfolder]: 231/2494 cut-off events. [2023-08-31 23:07:52,226 INFO L131 PetriNetUnfolder]: For 37760/37760 co-relation queries the response was YES. [2023-08-31 23:07:52,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:07:52,226 INFO L208 CegarLoopForPetriNet]: trace histogram [61, 60, 60, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:07:52,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:07:52,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:07:52,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1656975487, now seen corresponding path program 1 times [2023-08-31 23:07:52,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:07:52,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172572036] [2023-08-31 23:07:52,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:07:52,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:07:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:07:52,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:07:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:07:52,456 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:07:52,456 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:07:52,456 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:07:52,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-31 23:07:52,456 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:07:52,457 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:07:52,457 WARN L233 ceAbstractionStarter]: 60 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:07:52,457 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 61 thread instances. [2023-08-31 23:07:52,694 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:07:52,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1402 places, 1404 transitions, 6773 flow [2023-08-31 23:07:55,308 INFO L130 PetriNetUnfolder]: 308/4269 cut-off events. [2023-08-31 23:07:55,308 INFO L131 PetriNetUnfolder]: For 39650/39650 co-relation queries the response was YES. [2023-08-31 23:07:55,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6344 conditions, 4269 events. 308/4269 cut-off events. For 39650/39650 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 17436 event pairs, 0 based on Foata normal form. 0/3098 useless extension candidates. Maximal degree in co-relation 6199. Up to 124 conditions per place. [2023-08-31 23:07:55,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 1402 places, 1404 transitions, 6773 flow [2023-08-31 23:07:55,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1402 places, 1404 transitions, 6773 flow [2023-08-31 23:07:55,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:07:55,628 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1402 places, 1404 transitions, 6773 flow [2023-08-31 23:07:55,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1402 places, 1404 transitions, 6773 flow [2023-08-31 23:07:55,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1402 places, 1404 transitions, 6773 flow [2023-08-31 23:07:58,507 INFO L130 PetriNetUnfolder]: 308/4269 cut-off events. [2023-08-31 23:07:58,507 INFO L131 PetriNetUnfolder]: For 39650/39650 co-relation queries the response was YES. [2023-08-31 23:07:58,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6344 conditions, 4269 events. 308/4269 cut-off events. For 39650/39650 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 17436 event pairs, 0 based on Foata normal form. 0/3098 useless extension candidates. Maximal degree in co-relation 6199. Up to 124 conditions per place. [2023-08-31 23:07:59,708 INFO L119 LiptonReduction]: Number of co-enabled transitions 1813896 [2023-08-31 23:08:06,775 INFO L134 LiptonReduction]: Checked pairs total: 8912025 [2023-08-31 23:08:06,775 INFO L136 LiptonReduction]: Total number of compositions: 525 [2023-08-31 23:08:06,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:08:06,776 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:08:06,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:08:07,926 INFO L130 PetriNetUnfolder]: 232/2530 cut-off events. [2023-08-31 23:08:07,926 INFO L131 PetriNetUnfolder]: For 39650/39650 co-relation queries the response was YES. [2023-08-31 23:08:07,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:08:07,927 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 61, 61, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:08:07,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:08:07,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:08:07,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1811640377, now seen corresponding path program 1 times [2023-08-31 23:08:07,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:08:07,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269964126] [2023-08-31 23:08:07,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:08:07,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:08:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:08:08,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:08:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:08:08,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:08:08,185 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:08:08,186 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:08:08,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-31 23:08:08,186 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:08:08,186 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:08:08,186 WARN L233 ceAbstractionStarter]: 61 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:08:08,186 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 62 thread instances. [2023-08-31 23:08:08,379 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:08:08,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1424 places, 1426 transitions, 6944 flow [2023-08-31 23:08:11,245 INFO L130 PetriNetUnfolder]: 313/4338 cut-off events. [2023-08-31 23:08:11,245 INFO L131 PetriNetUnfolder]: For 41602/41602 co-relation queries the response was YES. [2023-08-31 23:08:11,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6478 conditions, 4338 events. 313/4338 cut-off events. For 41602/41602 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 17762 event pairs, 0 based on Foata normal form. 0/3148 useless extension candidates. Maximal degree in co-relation 6332. Up to 126 conditions per place. [2023-08-31 23:08:11,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 1424 places, 1426 transitions, 6944 flow [2023-08-31 23:08:11,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1424 places, 1426 transitions, 6944 flow [2023-08-31 23:08:11,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:08:11,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1424 places, 1426 transitions, 6944 flow [2023-08-31 23:08:11,562 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1424 places, 1426 transitions, 6944 flow [2023-08-31 23:08:11,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1424 places, 1426 transitions, 6944 flow [2023-08-31 23:08:14,484 INFO L130 PetriNetUnfolder]: 313/4338 cut-off events. [2023-08-31 23:08:14,484 INFO L131 PetriNetUnfolder]: For 41602/41602 co-relation queries the response was YES. [2023-08-31 23:08:14,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6478 conditions, 4338 events. 313/4338 cut-off events. For 41602/41602 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 17762 event pairs, 0 based on Foata normal form. 0/3148 useless extension candidates. Maximal degree in co-relation 6332. Up to 126 conditions per place. [2023-08-31 23:08:15,688 INFO L119 LiptonReduction]: Number of co-enabled transitions 1872276 [2023-08-31 23:08:22,690 INFO L134 LiptonReduction]: Checked pairs total: 7719587 [2023-08-31 23:08:22,691 INFO L136 LiptonReduction]: Total number of compositions: 531 [2023-08-31 23:08:22,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:08:22,692 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:08:22,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:08:23,968 INFO L130 PetriNetUnfolder]: 237/2574 cut-off events. [2023-08-31 23:08:23,969 INFO L131 PetriNetUnfolder]: For 41602/41602 co-relation queries the response was YES. [2023-08-31 23:08:23,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:08:23,969 INFO L208 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:08:23,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:08:23,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:08:23,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1097271063, now seen corresponding path program 1 times [2023-08-31 23:08:23,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:08:23,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727478833] [2023-08-31 23:08:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:08:23,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:08:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:08:24,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:08:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:08:24,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:08:24,276 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:08:24,276 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:08:24,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-31 23:08:24,277 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:08:24,277 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:08:24,277 WARN L233 ceAbstractionStarter]: 62 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:08:24,277 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 63 thread instances. [2023-08-31 23:08:24,474 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:08:24,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1446 places, 1448 transitions, 7117 flow [2023-08-31 23:08:27,462 INFO L130 PetriNetUnfolder]: 318/4407 cut-off events. [2023-08-31 23:08:27,462 INFO L131 PetriNetUnfolder]: For 43617/43617 co-relation queries the response was YES. [2023-08-31 23:08:27,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6613 conditions, 4407 events. 318/4407 cut-off events. For 43617/43617 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 17998 event pairs, 0 based on Foata normal form. 0/3198 useless extension candidates. Maximal degree in co-relation 6466. Up to 128 conditions per place. [2023-08-31 23:08:27,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 1446 places, 1448 transitions, 7117 flow [2023-08-31 23:08:27,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1446 places, 1448 transitions, 7117 flow [2023-08-31 23:08:27,789 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:08:27,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1446 places, 1448 transitions, 7117 flow [2023-08-31 23:08:27,789 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1446 places, 1448 transitions, 7117 flow [2023-08-31 23:08:27,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1446 places, 1448 transitions, 7117 flow [2023-08-31 23:08:30,755 INFO L130 PetriNetUnfolder]: 318/4407 cut-off events. [2023-08-31 23:08:30,755 INFO L131 PetriNetUnfolder]: For 43617/43617 co-relation queries the response was YES. [2023-08-31 23:08:31,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6613 conditions, 4407 events. 318/4407 cut-off events. For 43617/43617 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 17998 event pairs, 0 based on Foata normal form. 0/3198 useless extension candidates. Maximal degree in co-relation 6466. Up to 128 conditions per place. [2023-08-31 23:08:31,999 INFO L119 LiptonReduction]: Number of co-enabled transitions 1931580 [2023-08-31 23:08:39,223 INFO L134 LiptonReduction]: Checked pairs total: 8037524 [2023-08-31 23:08:39,223 INFO L136 LiptonReduction]: Total number of compositions: 544 [2023-08-31 23:08:39,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:08:39,224 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:08:39,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:08:40,463 INFO L130 PetriNetUnfolder]: 242/2618 cut-off events. [2023-08-31 23:08:40,463 INFO L131 PetriNetUnfolder]: For 43617/43617 co-relation queries the response was YES. [2023-08-31 23:08:40,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:08:40,464 INFO L208 CegarLoopForPetriNet]: trace histogram [64, 63, 63, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:08:40,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:08:40,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:08:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash 868880458, now seen corresponding path program 1 times [2023-08-31 23:08:40,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:08:40,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091971438] [2023-08-31 23:08:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:08:40,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:08:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:08:40,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:08:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:08:40,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:08:40,765 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:08:40,765 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:08:40,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-31 23:08:40,765 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:08:40,766 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:08:40,766 WARN L233 ceAbstractionStarter]: 63 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:08:40,766 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 64 thread instances. [2023-08-31 23:08:40,972 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:08:40,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1468 places, 1470 transitions, 7292 flow [2023-08-31 23:08:43,959 INFO L130 PetriNetUnfolder]: 323/4476 cut-off events. [2023-08-31 23:08:43,960 INFO L131 PetriNetUnfolder]: For 45696/45696 co-relation queries the response was YES. [2023-08-31 23:08:44,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6749 conditions, 4476 events. 323/4476 cut-off events. For 45696/45696 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 18362 event pairs, 0 based on Foata normal form. 0/3248 useless extension candidates. Maximal degree in co-relation 6601. Up to 130 conditions per place. [2023-08-31 23:08:44,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 1468 places, 1470 transitions, 7292 flow [2023-08-31 23:08:44,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1468 places, 1470 transitions, 7292 flow [2023-08-31 23:08:44,309 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:08:44,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1468 places, 1470 transitions, 7292 flow [2023-08-31 23:08:44,309 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1468 places, 1470 transitions, 7292 flow [2023-08-31 23:08:44,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1468 places, 1470 transitions, 7292 flow [2023-08-31 23:08:47,340 INFO L130 PetriNetUnfolder]: 323/4476 cut-off events. [2023-08-31 23:08:47,340 INFO L131 PetriNetUnfolder]: For 45696/45696 co-relation queries the response was YES. [2023-08-31 23:08:47,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6749 conditions, 4476 events. 323/4476 cut-off events. For 45696/45696 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 18362 event pairs, 0 based on Foata normal form. 0/3248 useless extension candidates. Maximal degree in co-relation 6601. Up to 130 conditions per place. [2023-08-31 23:08:48,655 INFO L119 LiptonReduction]: Number of co-enabled transitions 1991808 [2023-08-31 23:08:55,961 INFO L134 LiptonReduction]: Checked pairs total: 8294858 [2023-08-31 23:08:55,961 INFO L136 LiptonReduction]: Total number of compositions: 547 [2023-08-31 23:08:55,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:08:55,963 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:08:55,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:08:57,122 INFO L130 PetriNetUnfolder]: 244/2656 cut-off events. [2023-08-31 23:08:57,122 INFO L131 PetriNetUnfolder]: For 45696/45696 co-relation queries the response was YES. [2023-08-31 23:08:57,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:08:57,122 INFO L208 CegarLoopForPetriNet]: trace histogram [65, 64, 64, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:08:57,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:08:57,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:08:57,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1035987263, now seen corresponding path program 1 times [2023-08-31 23:08:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:08:57,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282155626] [2023-08-31 23:08:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:08:57,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:08:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:08:57,248 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:08:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:08:57,461 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:08:57,461 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:08:57,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:08:57,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-31 23:08:57,462 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:08:57,462 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:08:57,462 WARN L233 ceAbstractionStarter]: 64 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:08:57,463 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 65 thread instances. [2023-08-31 23:08:57,816 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:08:57,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1490 places, 1492 transitions, 7469 flow [2023-08-31 23:09:01,781 INFO L130 PetriNetUnfolder]: 328/4545 cut-off events. [2023-08-31 23:09:01,782 INFO L131 PetriNetUnfolder]: For 47840/47840 co-relation queries the response was YES. [2023-08-31 23:09:02,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6886 conditions, 4545 events. 328/4545 cut-off events. For 47840/47840 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 18611 event pairs, 0 based on Foata normal form. 0/3298 useless extension candidates. Maximal degree in co-relation 6737. Up to 132 conditions per place. [2023-08-31 23:09:02,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 1490 places, 1492 transitions, 7469 flow [2023-08-31 23:09:02,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1490 places, 1492 transitions, 7469 flow [2023-08-31 23:09:02,280 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:09:02,281 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1490 places, 1492 transitions, 7469 flow [2023-08-31 23:09:02,281 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1490 places, 1492 transitions, 7469 flow [2023-08-31 23:09:02,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1490 places, 1492 transitions, 7469 flow [2023-08-31 23:09:05,763 INFO L130 PetriNetUnfolder]: 328/4545 cut-off events. [2023-08-31 23:09:05,764 INFO L131 PetriNetUnfolder]: For 47840/47840 co-relation queries the response was YES. [2023-08-31 23:09:06,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6886 conditions, 4545 events. 328/4545 cut-off events. For 47840/47840 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 18611 event pairs, 0 based on Foata normal form. 0/3298 useless extension candidates. Maximal degree in co-relation 6737. Up to 132 conditions per place. [2023-08-31 23:09:06,883 INFO L119 LiptonReduction]: Number of co-enabled transitions 2052960 [2023-08-31 23:09:14,496 INFO L134 LiptonReduction]: Checked pairs total: 8524167 [2023-08-31 23:09:14,496 INFO L136 LiptonReduction]: Total number of compositions: 557 [2023-08-31 23:09:14,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:09:14,498 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:09:14,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:09:15,925 INFO L130 PetriNetUnfolder]: 247/2696 cut-off events. [2023-08-31 23:09:15,926 INFO L131 PetriNetUnfolder]: For 47840/47840 co-relation queries the response was YES. [2023-08-31 23:09:15,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:09:15,926 INFO L208 CegarLoopForPetriNet]: trace histogram [66, 65, 65, 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, 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 23:09:15,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:09:15,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:09:15,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1721984683, now seen corresponding path program 1 times [2023-08-31 23:09:15,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:09:15,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547049120] [2023-08-31 23:09:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:09:15,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:09:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:09:16,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:09:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:09:16,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:09:16,310 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:09:16,310 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:09:16,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-08-31 23:09:16,311 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:09:16,311 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:09:16,311 WARN L233 ceAbstractionStarter]: 65 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:09:16,311 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 66 thread instances. [2023-08-31 23:09:16,518 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:09:16,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1512 places, 1514 transitions, 7648 flow [2023-08-31 23:09:19,822 INFO L130 PetriNetUnfolder]: 333/4614 cut-off events. [2023-08-31 23:09:19,823 INFO L131 PetriNetUnfolder]: For 50050/50050 co-relation queries the response was YES. [2023-08-31 23:09:20,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7024 conditions, 4614 events. 333/4614 cut-off events. For 50050/50050 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 18904 event pairs, 0 based on Foata normal form. 0/3348 useless extension candidates. Maximal degree in co-relation 6874. Up to 134 conditions per place. [2023-08-31 23:09:20,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 1512 places, 1514 transitions, 7648 flow [2023-08-31 23:09:20,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1512 places, 1514 transitions, 7648 flow [2023-08-31 23:09:20,209 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:09:20,209 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1512 places, 1514 transitions, 7648 flow [2023-08-31 23:09:20,209 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1512 places, 1514 transitions, 7648 flow [2023-08-31 23:09:20,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1512 places, 1514 transitions, 7648 flow [2023-08-31 23:09:23,722 INFO L130 PetriNetUnfolder]: 333/4614 cut-off events. [2023-08-31 23:09:23,722 INFO L131 PetriNetUnfolder]: For 50050/50050 co-relation queries the response was YES. [2023-08-31 23:09:24,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7024 conditions, 4614 events. 333/4614 cut-off events. For 50050/50050 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 18904 event pairs, 0 based on Foata normal form. 0/3348 useless extension candidates. Maximal degree in co-relation 6874. Up to 134 conditions per place. [2023-08-31 23:09:24,861 INFO L119 LiptonReduction]: Number of co-enabled transitions 2115036 [2023-08-31 23:09:32,372 INFO L134 LiptonReduction]: Checked pairs total: 8865230 [2023-08-31 23:09:32,373 INFO L136 LiptonReduction]: Total number of compositions: 563 [2023-08-31 23:09:32,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:09:32,374 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:09:32,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:09:33,864 INFO L130 PetriNetUnfolder]: 255/2745 cut-off events. [2023-08-31 23:09:33,864 INFO L131 PetriNetUnfolder]: For 50050/50050 co-relation queries the response was YES. [2023-08-31 23:09:33,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:09:33,864 INFO L208 CegarLoopForPetriNet]: trace histogram [67, 66, 66, 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, 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 23:09:33,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:09:33,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:09:33,865 INFO L85 PathProgramCache]: Analyzing trace with hash 361473694, now seen corresponding path program 1 times [2023-08-31 23:09:33,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:09:33,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207275161] [2023-08-31 23:09:33,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:09:33,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:09:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:09:34,021 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:09:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:09:34,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:09:34,175 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:09:34,175 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:09:34,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-08-31 23:09:34,175 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:09:34,175 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:09:34,175 WARN L233 ceAbstractionStarter]: 66 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:09:34,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 67 thread instances. [2023-08-31 23:09:34,387 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:09:34,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1534 places, 1536 transitions, 7829 flow [2023-08-31 23:09:37,871 INFO L130 PetriNetUnfolder]: 338/4683 cut-off events. [2023-08-31 23:09:37,872 INFO L131 PetriNetUnfolder]: For 52327/52327 co-relation queries the response was YES. [2023-08-31 23:09:38,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7163 conditions, 4683 events. 338/4683 cut-off events. For 52327/52327 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 19200 event pairs, 0 based on Foata normal form. 0/3398 useless extension candidates. Maximal degree in co-relation 7012. Up to 136 conditions per place. [2023-08-31 23:09:38,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 1534 places, 1536 transitions, 7829 flow [2023-08-31 23:09:38,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1534 places, 1536 transitions, 7829 flow [2023-08-31 23:09:38,265 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:09:38,265 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1534 places, 1536 transitions, 7829 flow [2023-08-31 23:09:38,266 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1534 places, 1536 transitions, 7829 flow [2023-08-31 23:09:38,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1534 places, 1536 transitions, 7829 flow [2023-08-31 23:09:41,864 INFO L130 PetriNetUnfolder]: 338/4683 cut-off events. [2023-08-31 23:09:41,864 INFO L131 PetriNetUnfolder]: For 52327/52327 co-relation queries the response was YES. [2023-08-31 23:09:42,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7163 conditions, 4683 events. 338/4683 cut-off events. For 52327/52327 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 19200 event pairs, 0 based on Foata normal form. 0/3398 useless extension candidates. Maximal degree in co-relation 7012. Up to 136 conditions per place. [2023-08-31 23:09:43,017 INFO L119 LiptonReduction]: Number of co-enabled transitions 2178036 [2023-08-31 23:09:51,004 INFO L134 LiptonReduction]: Checked pairs total: 10678546 [2023-08-31 23:09:51,004 INFO L136 LiptonReduction]: Total number of compositions: 577 [2023-08-31 23:09:51,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:09:51,006 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:09:51,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:09:52,531 INFO L130 PetriNetUnfolder]: 255/2780 cut-off events. [2023-08-31 23:09:52,531 INFO L131 PetriNetUnfolder]: For 52327/52327 co-relation queries the response was YES. [2023-08-31 23:09:52,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:09:52,531 INFO L208 CegarLoopForPetriNet]: trace histogram [68, 67, 67, 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, 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 23:09:52,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:09:52,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:09:52,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1797149479, now seen corresponding path program 1 times [2023-08-31 23:09:52,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:09:52,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543481128] [2023-08-31 23:09:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:09:52,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:09:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:09:52,673 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:09:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:09:52,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:09:52,901 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:09:52,901 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:09:52,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-08-31 23:09:52,901 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:09:52,901 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:09:52,902 WARN L233 ceAbstractionStarter]: 67 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:09:52,902 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 68 thread instances. [2023-08-31 23:09:53,118 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:09:53,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1556 places, 1558 transitions, 8012 flow [2023-08-31 23:09:56,869 INFO L130 PetriNetUnfolder]: 343/4752 cut-off events. [2023-08-31 23:09:56,869 INFO L131 PetriNetUnfolder]: For 54672/54672 co-relation queries the response was YES. [2023-08-31 23:09:57,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7303 conditions, 4752 events. 343/4752 cut-off events. For 54672/54672 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 19449 event pairs, 0 based on Foata normal form. 0/3448 useless extension candidates. Maximal degree in co-relation 7151. Up to 138 conditions per place. [2023-08-31 23:09:57,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 1556 places, 1558 transitions, 8012 flow [2023-08-31 23:09:57,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1556 places, 1558 transitions, 8012 flow [2023-08-31 23:09:57,238 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:09:57,238 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1556 places, 1558 transitions, 8012 flow [2023-08-31 23:09:57,238 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1556 places, 1558 transitions, 8012 flow [2023-08-31 23:09:57,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1556 places, 1558 transitions, 8012 flow [2023-08-31 23:10:00,663 INFO L130 PetriNetUnfolder]: 343/4752 cut-off events. [2023-08-31 23:10:00,664 INFO L131 PetriNetUnfolder]: For 54672/54672 co-relation queries the response was YES. [2023-08-31 23:10:00,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7303 conditions, 4752 events. 343/4752 cut-off events. For 54672/54672 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 19449 event pairs, 0 based on Foata normal form. 0/3448 useless extension candidates. Maximal degree in co-relation 7151. Up to 138 conditions per place. [2023-08-31 23:10:02,100 INFO L119 LiptonReduction]: Number of co-enabled transitions 2241960 [2023-08-31 23:10:09,955 INFO L134 LiptonReduction]: Checked pairs total: 11125882 [2023-08-31 23:10:09,956 INFO L136 LiptonReduction]: Total number of compositions: 585 [2023-08-31 23:10:09,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:10:09,957 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:10:09,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:10:11,367 INFO L130 PetriNetUnfolder]: 262/2828 cut-off events. [2023-08-31 23:10:11,367 INFO L131 PetriNetUnfolder]: For 54672/54672 co-relation queries the response was YES. [2023-08-31 23:10:11,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:10:11,367 INFO L208 CegarLoopForPetriNet]: trace histogram [69, 68, 68, 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, 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 23:10:11,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:10:11,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:10:11,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1678481796, now seen corresponding path program 1 times [2023-08-31 23:10:11,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:10:11,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209282828] [2023-08-31 23:10:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:10:11,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:10:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:10:11,503 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:10:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:10:11,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:10:11,736 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:10:11,736 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:10:11,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-08-31 23:10:11,736 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:10:11,737 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:10:11,737 WARN L233 ceAbstractionStarter]: 68 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:10:11,737 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 69 thread instances. [2023-08-31 23:10:11,993 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:10:12,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1578 places, 1580 transitions, 8197 flow [2023-08-31 23:10:15,741 INFO L130 PetriNetUnfolder]: 348/4821 cut-off events. [2023-08-31 23:10:15,741 INFO L131 PetriNetUnfolder]: For 57086/57086 co-relation queries the response was YES. [2023-08-31 23:10:16,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7444 conditions, 4821 events. 348/4821 cut-off events. For 57086/57086 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 19766 event pairs, 0 based on Foata normal form. 0/3498 useless extension candidates. Maximal degree in co-relation 7291. Up to 140 conditions per place. [2023-08-31 23:10:16,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 1578 places, 1580 transitions, 8197 flow [2023-08-31 23:10:16,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1578 places, 1580 transitions, 8197 flow [2023-08-31 23:10:16,138 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:10:16,138 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1578 places, 1580 transitions, 8197 flow [2023-08-31 23:10:16,138 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1578 places, 1580 transitions, 8197 flow [2023-08-31 23:10:16,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1578 places, 1580 transitions, 8197 flow [2023-08-31 23:10:19,587 INFO L130 PetriNetUnfolder]: 348/4821 cut-off events. [2023-08-31 23:10:19,587 INFO L131 PetriNetUnfolder]: For 57086/57086 co-relation queries the response was YES. [2023-08-31 23:10:19,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7444 conditions, 4821 events. 348/4821 cut-off events. For 57086/57086 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 19766 event pairs, 0 based on Foata normal form. 0/3498 useless extension candidates. Maximal degree in co-relation 7291. Up to 140 conditions per place. [2023-08-31 23:10:21,128 INFO L119 LiptonReduction]: Number of co-enabled transitions 2306808 [2023-08-31 23:10:30,245 INFO L134 LiptonReduction]: Checked pairs total: 9691683 [2023-08-31 23:10:30,245 INFO L136 LiptonReduction]: Total number of compositions: 587 [2023-08-31 23:10:30,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:10:30,247 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:10:30,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:10:31,859 INFO L130 PetriNetUnfolder]: 270/2878 cut-off events. [2023-08-31 23:10:31,859 INFO L131 PetriNetUnfolder]: For 57086/57086 co-relation queries the response was YES. [2023-08-31 23:10:31,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:10:31,859 INFO L208 CegarLoopForPetriNet]: trace histogram [70, 69, 69, 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, 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 23:10:31,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:10:31,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:10:31,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2106195997, now seen corresponding path program 1 times [2023-08-31 23:10:31,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:10:31,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953823968] [2023-08-31 23:10:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:10:31,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:10:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:10:32,007 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:10:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:10:32,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:10:32,164 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:10:32,164 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:10:32,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-08-31 23:10:32,164 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:10:32,164 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:10:32,164 WARN L233 ceAbstractionStarter]: 69 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:10:32,164 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 70 thread instances. [2023-08-31 23:10:32,377 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:10:32,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1600 places, 1602 transitions, 8384 flow [2023-08-31 23:10:36,409 INFO L130 PetriNetUnfolder]: 353/4890 cut-off events. [2023-08-31 23:10:36,409 INFO L131 PetriNetUnfolder]: For 59570/59570 co-relation queries the response was YES. [2023-08-31 23:10:36,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7586 conditions, 4890 events. 353/4890 cut-off events. For 59570/59570 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 20083 event pairs, 0 based on Foata normal form. 0/3548 useless extension candidates. Maximal degree in co-relation 7432. Up to 142 conditions per place. [2023-08-31 23:10:36,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 1600 places, 1602 transitions, 8384 flow [2023-08-31 23:10:36,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1600 places, 1602 transitions, 8384 flow [2023-08-31 23:10:36,817 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:10:36,817 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1600 places, 1602 transitions, 8384 flow [2023-08-31 23:10:36,817 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1600 places, 1602 transitions, 8384 flow [2023-08-31 23:10:36,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1600 places, 1602 transitions, 8384 flow [2023-08-31 23:10:40,587 INFO L130 PetriNetUnfolder]: 353/4890 cut-off events. [2023-08-31 23:10:40,587 INFO L131 PetriNetUnfolder]: For 59570/59570 co-relation queries the response was YES. [2023-08-31 23:10:40,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7586 conditions, 4890 events. 353/4890 cut-off events. For 59570/59570 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 20083 event pairs, 0 based on Foata normal form. 0/3548 useless extension candidates. Maximal degree in co-relation 7432. Up to 142 conditions per place. [2023-08-31 23:10:42,185 INFO L119 LiptonReduction]: Number of co-enabled transitions 2372580 [2023-08-31 23:10:50,301 INFO L134 LiptonReduction]: Checked pairs total: 9869402 [2023-08-31 23:10:50,301 INFO L136 LiptonReduction]: Total number of compositions: 591 [2023-08-31 23:10:50,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:10:50,303 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:10:50,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:10:51,941 INFO L130 PetriNetUnfolder]: 268/2908 cut-off events. [2023-08-31 23:10:51,941 INFO L131 PetriNetUnfolder]: For 59570/59570 co-relation queries the response was YES. [2023-08-31 23:10:51,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:10:51,941 INFO L208 CegarLoopForPetriNet]: trace histogram [71, 70, 70, 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, 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 23:10:51,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:10:51,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:10:51,942 INFO L85 PathProgramCache]: Analyzing trace with hash 625485716, now seen corresponding path program 1 times [2023-08-31 23:10:51,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:10:51,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406801725] [2023-08-31 23:10:51,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:10:51,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:10:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:10:52,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:10:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:10:52,316 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:10:52,316 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:10:52,316 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:10:52,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-08-31 23:10:52,317 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:10:52,317 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:10:52,317 WARN L233 ceAbstractionStarter]: 70 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:10:52,317 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 71 thread instances. [2023-08-31 23:10:52,553 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:10:52,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1622 places, 1624 transitions, 8573 flow [2023-08-31 23:10:56,773 INFO L130 PetriNetUnfolder]: 358/4959 cut-off events. [2023-08-31 23:10:56,773 INFO L131 PetriNetUnfolder]: For 62125/62125 co-relation queries the response was YES. [2023-08-31 23:10:57,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7729 conditions, 4959 events. 358/4959 cut-off events. For 62125/62125 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 20357 event pairs, 0 based on Foata normal form. 0/3598 useless extension candidates. Maximal degree in co-relation 7574. Up to 144 conditions per place. [2023-08-31 23:10:57,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 1622 places, 1624 transitions, 8573 flow [2023-08-31 23:10:57,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1622 places, 1624 transitions, 8573 flow [2023-08-31 23:10:57,187 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:10:57,187 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1622 places, 1624 transitions, 8573 flow [2023-08-31 23:10:57,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1622 places, 1624 transitions, 8573 flow [2023-08-31 23:10:57,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1622 places, 1624 transitions, 8573 flow [2023-08-31 23:11:01,265 INFO L130 PetriNetUnfolder]: 358/4959 cut-off events. [2023-08-31 23:11:01,266 INFO L131 PetriNetUnfolder]: For 62125/62125 co-relation queries the response was YES. [2023-08-31 23:11:01,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7729 conditions, 4959 events. 358/4959 cut-off events. For 62125/62125 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 20357 event pairs, 0 based on Foata normal form. 0/3598 useless extension candidates. Maximal degree in co-relation 7574. Up to 144 conditions per place. [2023-08-31 23:11:02,623 INFO L119 LiptonReduction]: Number of co-enabled transitions 2439276 [2023-08-31 23:11:11,435 INFO L134 LiptonReduction]: Checked pairs total: 12023579 [2023-08-31 23:11:11,435 INFO L136 LiptonReduction]: Total number of compositions: 605 [2023-08-31 23:11:11,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:11:11,436 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:11:11,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:11:13,002 INFO L130 PetriNetUnfolder]: 274/2953 cut-off events. [2023-08-31 23:11:13,002 INFO L131 PetriNetUnfolder]: For 62125/62125 co-relation queries the response was YES. [2023-08-31 23:11:13,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:11:13,003 INFO L208 CegarLoopForPetriNet]: trace histogram [72, 71, 71, 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, 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 23:11:13,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:11:13,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:11:13,003 INFO L85 PathProgramCache]: Analyzing trace with hash 122828275, now seen corresponding path program 1 times [2023-08-31 23:11:13,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:11:13,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307342881] [2023-08-31 23:11:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:11:13,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:11:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:11:13,170 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:11:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:11:13,412 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:11:13,412 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:11:13,412 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:11:13,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-08-31 23:11:13,413 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:11:13,413 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:11:13,413 WARN L233 ceAbstractionStarter]: 71 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:11:13,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 72 thread instances. [2023-08-31 23:11:13,678 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:11:13,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1644 places, 1646 transitions, 8764 flow [2023-08-31 23:11:17,746 INFO L130 PetriNetUnfolder]: 363/5028 cut-off events. [2023-08-31 23:11:17,746 INFO L131 PetriNetUnfolder]: For 64752/64752 co-relation queries the response was YES. [2023-08-31 23:11:18,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7873 conditions, 5028 events. 363/5028 cut-off events. For 64752/64752 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 20569 event pairs, 0 based on Foata normal form. 0/3648 useless extension candidates. Maximal degree in co-relation 7717. Up to 146 conditions per place. [2023-08-31 23:11:18,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 1644 places, 1646 transitions, 8764 flow [2023-08-31 23:11:18,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1644 places, 1646 transitions, 8764 flow [2023-08-31 23:11:18,202 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:11:18,202 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1644 places, 1646 transitions, 8764 flow [2023-08-31 23:11:18,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1644 places, 1646 transitions, 8764 flow [2023-08-31 23:11:18,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1644 places, 1646 transitions, 8764 flow [2023-08-31 23:11:22,348 INFO L130 PetriNetUnfolder]: 363/5028 cut-off events. [2023-08-31 23:11:22,348 INFO L131 PetriNetUnfolder]: For 64752/64752 co-relation queries the response was YES. [2023-08-31 23:11:22,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7873 conditions, 5028 events. 363/5028 cut-off events. For 64752/64752 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 20569 event pairs, 0 based on Foata normal form. 0/3648 useless extension candidates. Maximal degree in co-relation 7717. Up to 146 conditions per place. [2023-08-31 23:11:23,981 INFO L119 LiptonReduction]: Number of co-enabled transitions 2506896 [2023-08-31 23:11:32,550 INFO L134 LiptonReduction]: Checked pairs total: 12343078 [2023-08-31 23:11:32,551 INFO L136 LiptonReduction]: Total number of compositions: 614 [2023-08-31 23:11:32,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:11:32,552 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:11:32,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:11:34,299 INFO L130 PetriNetUnfolder]: 271/2982 cut-off events. [2023-08-31 23:11:34,299 INFO L131 PetriNetUnfolder]: For 64752/64752 co-relation queries the response was YES. [2023-08-31 23:11:34,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:11:34,299 INFO L208 CegarLoopForPetriNet]: trace histogram [73, 72, 72, 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, 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 23:11:34,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:11:34,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:11:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash -387058458, now seen corresponding path program 1 times [2023-08-31 23:11:34,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:11:34,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405722634] [2023-08-31 23:11:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:11:34,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:11:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:11:34,460 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:11:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:11:34,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:11:34,642 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:11:34,642 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:11:34,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-08-31 23:11:34,643 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:11:34,643 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:11:34,643 WARN L233 ceAbstractionStarter]: 72 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:11:34,643 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 73 thread instances. [2023-08-31 23:11:34,869 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:11:34,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1666 places, 1668 transitions, 8957 flow [2023-08-31 23:11:39,266 INFO L130 PetriNetUnfolder]: 368/5097 cut-off events. [2023-08-31 23:11:39,266 INFO L131 PetriNetUnfolder]: For 67452/67452 co-relation queries the response was YES. [2023-08-31 23:11:39,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8018 conditions, 5097 events. 368/5097 cut-off events. For 67452/67452 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 20908 event pairs, 0 based on Foata normal form. 0/3698 useless extension candidates. Maximal degree in co-relation 7861. Up to 148 conditions per place. [2023-08-31 23:11:39,668 INFO L82 GeneralOperation]: Start removeDead. Operand has 1666 places, 1668 transitions, 8957 flow [2023-08-31 23:11:39,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1666 places, 1668 transitions, 8957 flow [2023-08-31 23:11:39,728 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:11:39,728 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1666 places, 1668 transitions, 8957 flow [2023-08-31 23:11:39,728 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1666 places, 1668 transitions, 8957 flow [2023-08-31 23:11:39,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1666 places, 1668 transitions, 8957 flow [2023-08-31 23:11:43,989 INFO L130 PetriNetUnfolder]: 368/5097 cut-off events. [2023-08-31 23:11:43,989 INFO L131 PetriNetUnfolder]: For 67452/67452 co-relation queries the response was YES. [2023-08-31 23:11:44,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8018 conditions, 5097 events. 368/5097 cut-off events. For 67452/67452 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 20908 event pairs, 0 based on Foata normal form. 0/3698 useless extension candidates. Maximal degree in co-relation 7861. Up to 148 conditions per place. [2023-08-31 23:11:45,673 INFO L119 LiptonReduction]: Number of co-enabled transitions 2575440 [2023-08-31 23:11:54,353 INFO L134 LiptonReduction]: Checked pairs total: 12879283 [2023-08-31 23:11:54,353 INFO L136 LiptonReduction]: Total number of compositions: 614 [2023-08-31 23:11:54,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 23:11:54,354 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;@1c1ee592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:11:54,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 23:11:56,140 INFO L130 PetriNetUnfolder]: 283/3040 cut-off events. [2023-08-31 23:11:56,141 INFO L131 PetriNetUnfolder]: For 67452/67452 co-relation queries the response was YES. [2023-08-31 23:11:56,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:11:56,141 INFO L208 CegarLoopForPetriNet]: trace histogram [74, 73, 73, 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, 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 23:11:56,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 23:11:56,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:11:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash 916058718, now seen corresponding path program 1 times [2023-08-31 23:11:56,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:11:56,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146431595] [2023-08-31 23:11:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:11:56,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:11:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:11:56,299 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:11:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:11:56,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:11:56,466 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:11:56,466 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 23:11:56,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-08-31 23:11:56,466 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 23:11:56,466 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 23:11:56,466 WARN L233 ceAbstractionStarter]: 73 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 23:11:56,466 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 74 thread instances. [2023-08-31 23:11:56,770 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:11:56,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1688 places, 1690 transitions, 9152 flow