./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:35:49,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:35:49,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:35:49,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:35:49,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:35:49,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:35:49,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:35:49,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:35:49,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:35:49,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:35:49,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:35:49,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:35:49,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:35:49,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:35:49,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:35:49,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:35:49,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:35:49,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:35:49,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:35:49,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:35:49,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:35:49,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:35:49,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:35:49,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:35:49,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:35:49,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:35:49,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:35:49,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:35:49,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:35:49,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:35:49,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:35:49,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:35:49,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:35:49,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:35:49,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:35:49,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:35:49,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:35:49,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:35:49,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:35:49,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:35:49,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:35:49,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:35:49,589 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:35:49,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:35:49,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:35:49,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:35:49,592 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:35:49,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:35:49,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:35:49,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:35:49,593 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:35:49,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:35:49,594 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:35:49,594 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:35:49,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:35:49,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:35:49,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:35:49,595 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:35:49,595 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:35:49,595 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:35:49,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:35:49,595 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:35:49,595 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:35:49,596 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:35:49,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:35:49,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:35:49,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:35:49,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:35:49,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:35:49,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:35:49,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:35:49,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:35:49,598 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:35:49,598 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:35:49,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:35:49,598 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:35:49,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:35:49,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:35:49,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:35:49,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:35:49,889 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:35:49,890 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:35:49,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-09-01 00:35:51,072 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:35:51,378 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:35:51,379 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-09-01 00:35:51,395 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/986eb8383/d4db0a77656a4feaa92467e40e288197/FLAG028a76be7 [2023-09-01 00:35:51,412 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/986eb8383/d4db0a77656a4feaa92467e40e288197 [2023-09-01 00:35:51,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:35:51,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:35:51,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:35:51,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:35:51,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:35:51,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b205362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51, skipping insertion in model container [2023-09-01 00:35:51,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:35:51,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:35:51,672 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i[30176,30189] [2023-09-01 00:35:51,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:35:51,714 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:35:51,768 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i[30176,30189] [2023-09-01 00:35:51,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:35:51,819 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:35:51,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51 WrapperNode [2023-09-01 00:35:51,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:35:51,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:35:51,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:35:51,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:35:51,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,879 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-09-01 00:35:51,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:35:51,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:35:51,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:35:51,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:35:51,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:35:51,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:35:51,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:35:51,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:35:51,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51" (1/1) ... [2023-09-01 00:35:51,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:35:51,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:35:51,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 00:35:52,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 00:35:52,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:35:52,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:35:52,017 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:35:52,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:35:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:35:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:35:52,018 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:35:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:35:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:35:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:35:52,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:35:52,020 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:35:52,142 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:35:52,144 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:35:52,476 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:35:52,482 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:35:52,482 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-09-01 00:35:52,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:35:52 BoogieIcfgContainer [2023-09-01 00:35:52,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:35:52,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:35:52,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:35:52,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:35:52,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:35:51" (1/3) ... [2023-09-01 00:35:52,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e74aa34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:35:52, skipping insertion in model container [2023-09-01 00:35:52,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:35:51" (2/3) ... [2023-09-01 00:35:52,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e74aa34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:35:52, skipping insertion in model container [2023-09-01 00:35:52,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:35:52" (3/3) ... [2023-09-01 00:35:52,493 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2023-09-01 00:35:52,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:35:52,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-09-01 00:35:52,509 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:35:52,576 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:35:52,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 113 transitions, 231 flow [2023-09-01 00:35:52,695 INFO L130 PetriNetUnfolder]: 14/148 cut-off events. [2023-09-01 00:35:52,695 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:35:52,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 148 events. 14/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 412 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2023-09-01 00:35:52,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 113 transitions, 231 flow [2023-09-01 00:35:52,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 113 transitions, 231 flow [2023-09-01 00:35:52,708 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:35:52,728 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 113 transitions, 231 flow [2023-09-01 00:35:52,731 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 113 transitions, 231 flow [2023-09-01 00:35:52,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 113 transitions, 231 flow [2023-09-01 00:35:52,779 INFO L130 PetriNetUnfolder]: 14/148 cut-off events. [2023-09-01 00:35:52,779 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:35:52,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 148 events. 14/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 412 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2023-09-01 00:35:52,784 INFO L119 LiptonReduction]: Number of co-enabled transitions 3280 [2023-09-01 00:35:56,135 INFO L134 LiptonReduction]: Checked pairs total: 7986 [2023-09-01 00:35:56,136 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-09-01 00:35:56,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:35:56,152 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:35:56,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:35:56,159 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2023-09-01 00:35:56,159 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:35:56,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:35:56,160 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:35:56,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:35:56,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:35:56,165 INFO L85 PathProgramCache]: Analyzing trace with hash 69721653, now seen corresponding path program 1 times [2023-09-01 00:35:56,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:35:56,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216669233] [2023-09-01 00:35:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:35:56,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:35:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:56,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:35:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:56,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:35:56,327 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:35:56,328 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:35:56,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:35:56,330 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:35:56,332 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:35:56,332 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:35:56,332 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:35:56,352 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:35:56,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 154 transitions, 320 flow [2023-09-01 00:35:56,395 INFO L130 PetriNetUnfolder]: 24/229 cut-off events. [2023-09-01 00:35:56,396 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 00:35:56,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 229 events. 24/229 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 759 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 149. Up to 6 conditions per place. [2023-09-01 00:35:56,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 154 transitions, 320 flow [2023-09-01 00:35:56,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 154 transitions, 320 flow [2023-09-01 00:35:56,403 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:35:56,403 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 154 transitions, 320 flow [2023-09-01 00:35:56,403 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 154 transitions, 320 flow [2023-09-01 00:35:56,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 154 transitions, 320 flow [2023-09-01 00:35:56,451 INFO L130 PetriNetUnfolder]: 24/229 cut-off events. [2023-09-01 00:35:56,451 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 00:35:56,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 229 events. 24/229 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 759 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 149. Up to 6 conditions per place. [2023-09-01 00:35:56,458 INFO L119 LiptonReduction]: Number of co-enabled transitions 9840 [2023-09-01 00:35:59,620 INFO L134 LiptonReduction]: Checked pairs total: 25749 [2023-09-01 00:35:59,621 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-09-01 00:35:59,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:35:59,624 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:35:59,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:35:59,632 INFO L130 PetriNetUnfolder]: 10/77 cut-off events. [2023-09-01 00:35:59,632 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 00:35:59,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:35:59,632 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:35:59,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:35:59,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:35:59,633 INFO L85 PathProgramCache]: Analyzing trace with hash 220256181, now seen corresponding path program 1 times [2023-09-01 00:35:59,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:35:59,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304891689] [2023-09-01 00:35:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:35:59,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:35:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:59,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:35:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:59,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:35:59,684 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:35:59,684 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:35:59,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:35:59,684 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:35:59,685 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:35:59,685 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:35:59,686 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:35:59,706 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:35:59,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 195 transitions, 411 flow [2023-09-01 00:35:59,738 INFO L130 PetriNetUnfolder]: 34/310 cut-off events. [2023-09-01 00:35:59,738 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 00:35:59,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 310 events. 34/310 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1098 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-09-01 00:35:59,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 195 transitions, 411 flow [2023-09-01 00:35:59,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 195 transitions, 411 flow [2023-09-01 00:35:59,744 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:35:59,744 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 195 transitions, 411 flow [2023-09-01 00:35:59,745 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 195 transitions, 411 flow [2023-09-01 00:35:59,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 195 transitions, 411 flow [2023-09-01 00:35:59,774 INFO L130 PetriNetUnfolder]: 34/310 cut-off events. [2023-09-01 00:35:59,774 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 00:35:59,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 310 events. 34/310 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1098 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-09-01 00:35:59,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 19680 [2023-09-01 00:36:03,095 INFO L134 LiptonReduction]: Checked pairs total: 54033 [2023-09-01 00:36:03,095 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-09-01 00:36:03,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:03,097 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:03,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:03,107 INFO L130 PetriNetUnfolder]: 18/120 cut-off events. [2023-09-01 00:36:03,108 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 00:36:03,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:03,108 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:36:03,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:03,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:03,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1654468295, now seen corresponding path program 1 times [2023-09-01 00:36:03,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:03,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937957925] [2023-09-01 00:36:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:03,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:03,137 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:03,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:03,181 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:03,181 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:03,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:36:03,181 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:03,182 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:03,182 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:03,182 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:36:03,205 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:36:03,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 236 transitions, 504 flow [2023-09-01 00:36:03,251 INFO L130 PetriNetUnfolder]: 44/391 cut-off events. [2023-09-01 00:36:03,252 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 00:36:03,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 391 events. 44/391 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1442 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 318. Up to 10 conditions per place. [2023-09-01 00:36:03,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 236 transitions, 504 flow [2023-09-01 00:36:03,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 236 transitions, 504 flow [2023-09-01 00:36:03,261 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:36:03,261 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 236 transitions, 504 flow [2023-09-01 00:36:03,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 236 transitions, 504 flow [2023-09-01 00:36:03,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 236 transitions, 504 flow [2023-09-01 00:36:03,306 INFO L130 PetriNetUnfolder]: 44/391 cut-off events. [2023-09-01 00:36:03,307 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 00:36:03,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 391 events. 44/391 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1442 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 318. Up to 10 conditions per place. [2023-09-01 00:36:03,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 32800 [2023-09-01 00:36:06,892 INFO L134 LiptonReduction]: Checked pairs total: 93893 [2023-09-01 00:36:06,892 INFO L136 LiptonReduction]: Total number of compositions: 192 [2023-09-01 00:36:06,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:06,895 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:06,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:06,909 INFO L130 PetriNetUnfolder]: 26/163 cut-off events. [2023-09-01 00:36:06,910 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 00:36:06,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:06,910 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:36:06,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:06,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1709430759, now seen corresponding path program 1 times [2023-09-01 00:36:06,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:06,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458444843] [2023-09-01 00:36:06,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:06,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:06,938 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:06,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:06,961 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:06,962 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:06,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:36:06,962 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:06,963 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:06,963 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:06,963 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:36:06,983 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:36:06,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 277 transitions, 599 flow [2023-09-01 00:36:07,058 INFO L130 PetriNetUnfolder]: 54/472 cut-off events. [2023-09-01 00:36:07,058 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 00:36:07,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 472 events. 54/472 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1778 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 404. Up to 12 conditions per place. [2023-09-01 00:36:07,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 277 transitions, 599 flow [2023-09-01 00:36:07,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 277 transitions, 599 flow [2023-09-01 00:36:07,068 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:36:07,068 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 277 transitions, 599 flow [2023-09-01 00:36:07,068 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 277 transitions, 599 flow [2023-09-01 00:36:07,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 277 transitions, 599 flow [2023-09-01 00:36:07,124 INFO L130 PetriNetUnfolder]: 54/472 cut-off events. [2023-09-01 00:36:07,125 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 00:36:07,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 472 events. 54/472 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1778 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 404. Up to 12 conditions per place. [2023-09-01 00:36:07,146 INFO L119 LiptonReduction]: Number of co-enabled transitions 49200 [2023-09-01 00:36:10,754 INFO L134 LiptonReduction]: Checked pairs total: 143648 [2023-09-01 00:36:10,761 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-09-01 00:36:10,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:10,768 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:10,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:10,792 INFO L130 PetriNetUnfolder]: 34/206 cut-off events. [2023-09-01 00:36:10,793 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 00:36:10,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:10,793 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:36:10,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:10,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:10,794 INFO L85 PathProgramCache]: Analyzing trace with hash 716454280, now seen corresponding path program 1 times [2023-09-01 00:36:10,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:10,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897284752] [2023-09-01 00:36:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:10,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:10,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:10,895 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:10,899 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:10,899 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:10,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:36:10,900 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:10,901 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:10,901 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:10,902 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:36:10,929 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:36:10,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 318 transitions, 696 flow [2023-09-01 00:36:11,008 INFO L130 PetriNetUnfolder]: 64/553 cut-off events. [2023-09-01 00:36:11,008 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 00:36:11,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 553 events. 64/553 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2126 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 491. Up to 14 conditions per place. [2023-09-01 00:36:11,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 318 transitions, 696 flow [2023-09-01 00:36:11,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 318 transitions, 696 flow [2023-09-01 00:36:11,021 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:36:11,021 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 291 places, 318 transitions, 696 flow [2023-09-01 00:36:11,021 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 291 places, 318 transitions, 696 flow [2023-09-01 00:36:11,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 318 transitions, 696 flow [2023-09-01 00:36:11,107 INFO L130 PetriNetUnfolder]: 64/553 cut-off events. [2023-09-01 00:36:11,108 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 00:36:11,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 553 events. 64/553 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2126 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 491. Up to 14 conditions per place. [2023-09-01 00:36:11,135 INFO L119 LiptonReduction]: Number of co-enabled transitions 68880 [2023-09-01 00:36:15,220 INFO L134 LiptonReduction]: Checked pairs total: 207383 [2023-09-01 00:36:15,220 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-09-01 00:36:15,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:15,222 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:15,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:15,254 INFO L130 PetriNetUnfolder]: 42/249 cut-off events. [2023-09-01 00:36:15,254 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 00:36:15,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:15,254 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:36:15,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:15,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:15,255 INFO L85 PathProgramCache]: Analyzing trace with hash -737074096, now seen corresponding path program 1 times [2023-09-01 00:36:15,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:15,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355067302] [2023-09-01 00:36:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:15,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:15,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:15,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:15,343 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:15,343 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:15,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:36:15,344 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:15,347 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:15,347 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:15,347 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:36:15,376 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:36:15,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 328 places, 359 transitions, 795 flow [2023-09-01 00:36:15,476 INFO L130 PetriNetUnfolder]: 74/634 cut-off events. [2023-09-01 00:36:15,476 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 00:36:15,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 634 events. 74/634 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2487 event pairs, 0 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 579. Up to 16 conditions per place. [2023-09-01 00:36:15,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 328 places, 359 transitions, 795 flow [2023-09-01 00:36:15,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 328 places, 359 transitions, 795 flow [2023-09-01 00:36:15,497 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:36:15,497 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 328 places, 359 transitions, 795 flow [2023-09-01 00:36:15,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 328 places, 359 transitions, 795 flow [2023-09-01 00:36:15,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 328 places, 359 transitions, 795 flow [2023-09-01 00:36:15,612 INFO L130 PetriNetUnfolder]: 74/634 cut-off events. [2023-09-01 00:36:15,612 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 00:36:15,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 634 events. 74/634 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2487 event pairs, 0 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 579. Up to 16 conditions per place. [2023-09-01 00:36:15,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 91840 [2023-09-01 00:36:19,995 INFO L134 LiptonReduction]: Checked pairs total: 272631 [2023-09-01 00:36:19,996 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-09-01 00:36:19,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:19,998 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:19,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:20,034 INFO L130 PetriNetUnfolder]: 50/292 cut-off events. [2023-09-01 00:36:20,035 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 00:36:20,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:20,035 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:36:20,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:20,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:20,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1090103305, now seen corresponding path program 1 times [2023-09-01 00:36:20,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:20,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298508216] [2023-09-01 00:36:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:20,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:20,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:20,076 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:20,076 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:20,076 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:20,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:36:20,077 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:20,077 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:20,077 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:20,078 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:36:20,104 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:36:20,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 400 transitions, 896 flow [2023-09-01 00:36:20,219 INFO L130 PetriNetUnfolder]: 84/715 cut-off events. [2023-09-01 00:36:20,219 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 00:36:20,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 715 events. 84/715 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2805 event pairs, 0 based on Foata normal form. 0/504 useless extension candidates. Maximal degree in co-relation 668. Up to 18 conditions per place. [2023-09-01 00:36:20,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 400 transitions, 896 flow [2023-09-01 00:36:20,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 400 transitions, 896 flow [2023-09-01 00:36:20,244 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:36:20,244 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 365 places, 400 transitions, 896 flow [2023-09-01 00:36:20,244 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 365 places, 400 transitions, 896 flow [2023-09-01 00:36:20,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 400 transitions, 896 flow [2023-09-01 00:36:20,367 INFO L130 PetriNetUnfolder]: 84/715 cut-off events. [2023-09-01 00:36:20,367 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 00:36:20,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 715 events. 84/715 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2805 event pairs, 0 based on Foata normal form. 0/504 useless extension candidates. Maximal degree in co-relation 668. Up to 18 conditions per place. [2023-09-01 00:36:20,417 INFO L119 LiptonReduction]: Number of co-enabled transitions 118080 [2023-09-01 00:36:25,066 INFO L134 LiptonReduction]: Checked pairs total: 356625 [2023-09-01 00:36:25,066 INFO L136 LiptonReduction]: Total number of compositions: 320 [2023-09-01 00:36:25,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:25,068 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:25,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:25,103 INFO L130 PetriNetUnfolder]: 58/335 cut-off events. [2023-09-01 00:36:25,104 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 00:36:25,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:25,104 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:36:25,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:25,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash 725683159, now seen corresponding path program 1 times [2023-09-01 00:36:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:25,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731043238] [2023-09-01 00:36:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:25,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:25,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:25,148 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:25,148 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:25,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:36:25,148 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:25,149 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:25,149 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:25,149 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:36:25,178 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:36:25,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 441 transitions, 999 flow [2023-09-01 00:36:25,342 INFO L130 PetriNetUnfolder]: 94/796 cut-off events. [2023-09-01 00:36:25,342 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 00:36:25,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 796 events. 94/796 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3159 event pairs, 0 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 758. Up to 20 conditions per place. [2023-09-01 00:36:25,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 402 places, 441 transitions, 999 flow [2023-09-01 00:36:25,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 441 transitions, 999 flow [2023-09-01 00:36:25,364 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:36:25,364 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 402 places, 441 transitions, 999 flow [2023-09-01 00:36:25,365 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 402 places, 441 transitions, 999 flow [2023-09-01 00:36:25,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 441 transitions, 999 flow [2023-09-01 00:36:25,499 INFO L130 PetriNetUnfolder]: 94/796 cut-off events. [2023-09-01 00:36:25,499 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 00:36:25,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 796 events. 94/796 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3159 event pairs, 0 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 758. Up to 20 conditions per place. [2023-09-01 00:36:25,563 INFO L119 LiptonReduction]: Number of co-enabled transitions 147600 [2023-09-01 00:36:30,371 INFO L134 LiptonReduction]: Checked pairs total: 450157 [2023-09-01 00:36:30,371 INFO L136 LiptonReduction]: Total number of compositions: 348 [2023-09-01 00:36:30,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:30,373 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:30,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:30,416 INFO L130 PetriNetUnfolder]: 66/378 cut-off events. [2023-09-01 00:36:30,416 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 00:36:30,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:30,416 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:36:30,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:30,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:30,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1361504110, now seen corresponding path program 1 times [2023-09-01 00:36:30,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:30,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143153857] [2023-09-01 00:36:30,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:30,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:30,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:30,456 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:30,456 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:30,456 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:30,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:36:30,457 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:30,457 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:30,457 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:30,457 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:36:30,488 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:36:30,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 439 places, 482 transitions, 1104 flow [2023-09-01 00:36:30,679 INFO L130 PetriNetUnfolder]: 104/877 cut-off events. [2023-09-01 00:36:30,679 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 00:36:30,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 877 events. 104/877 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3510 event pairs, 0 based on Foata normal form. 0/616 useless extension candidates. Maximal degree in co-relation 849. Up to 22 conditions per place. [2023-09-01 00:36:30,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 439 places, 482 transitions, 1104 flow [2023-09-01 00:36:30,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 439 places, 482 transitions, 1104 flow [2023-09-01 00:36:30,702 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:36:30,703 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 439 places, 482 transitions, 1104 flow [2023-09-01 00:36:30,703 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 439 places, 482 transitions, 1104 flow [2023-09-01 00:36:30,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 439 places, 482 transitions, 1104 flow [2023-09-01 00:36:30,861 INFO L130 PetriNetUnfolder]: 104/877 cut-off events. [2023-09-01 00:36:30,862 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 00:36:30,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 877 events. 104/877 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3510 event pairs, 0 based on Foata normal form. 0/616 useless extension candidates. Maximal degree in co-relation 849. Up to 22 conditions per place. [2023-09-01 00:36:30,973 INFO L119 LiptonReduction]: Number of co-enabled transitions 180400 [2023-09-01 00:36:35,842 INFO L134 LiptonReduction]: Checked pairs total: 558986 [2023-09-01 00:36:35,843 INFO L136 LiptonReduction]: Total number of compositions: 358 [2023-09-01 00:36:35,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:35,845 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:35,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:35,904 INFO L130 PetriNetUnfolder]: 86/434 cut-off events. [2023-09-01 00:36:35,905 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 00:36:35,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:35,905 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:36:35,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:35,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:35,906 INFO L85 PathProgramCache]: Analyzing trace with hash -785721418, now seen corresponding path program 1 times [2023-09-01 00:36:35,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:35,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085808632] [2023-09-01 00:36:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:35,946 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:35,976 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:35,977 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:35,977 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:35,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:36:35,977 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:35,978 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:35,978 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:35,978 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:36:36,012 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:36:36,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 476 places, 523 transitions, 1211 flow [2023-09-01 00:36:36,257 INFO L130 PetriNetUnfolder]: 114/958 cut-off events. [2023-09-01 00:36:36,258 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 00:36:36,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 958 events. 114/958 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3901 event pairs, 0 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 941. Up to 24 conditions per place. [2023-09-01 00:36:36,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 476 places, 523 transitions, 1211 flow [2023-09-01 00:36:36,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 476 places, 523 transitions, 1211 flow [2023-09-01 00:36:36,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:36:36,287 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 476 places, 523 transitions, 1211 flow [2023-09-01 00:36:36,287 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 476 places, 523 transitions, 1211 flow [2023-09-01 00:36:36,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 476 places, 523 transitions, 1211 flow [2023-09-01 00:36:36,476 INFO L130 PetriNetUnfolder]: 114/958 cut-off events. [2023-09-01 00:36:36,476 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 00:36:36,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 958 events. 114/958 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3901 event pairs, 0 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 941. Up to 24 conditions per place. [2023-09-01 00:36:36,567 INFO L119 LiptonReduction]: Number of co-enabled transitions 216480 [2023-09-01 00:36:42,088 INFO L134 LiptonReduction]: Checked pairs total: 676750 [2023-09-01 00:36:42,088 INFO L136 LiptonReduction]: Total number of compositions: 407 [2023-09-01 00:36:42,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:42,089 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:42,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:42,141 INFO L130 PetriNetUnfolder]: 95/478 cut-off events. [2023-09-01 00:36:42,141 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 00:36:42,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:42,141 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:36:42,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:42,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:42,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1823683179, now seen corresponding path program 1 times [2023-09-01 00:36:42,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:42,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216450862] [2023-09-01 00:36:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:42,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:42,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:42,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:42,201 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:42,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:42,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:36:42,202 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:42,202 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:42,203 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:42,203 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:36:42,251 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:36:42,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 513 places, 564 transitions, 1320 flow [2023-09-01 00:36:42,493 INFO L130 PetriNetUnfolder]: 124/1039 cut-off events. [2023-09-01 00:36:42,493 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 00:36:42,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 1039 events. 124/1039 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 4212 event pairs, 0 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 1034. Up to 26 conditions per place. [2023-09-01 00:36:42,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 513 places, 564 transitions, 1320 flow [2023-09-01 00:36:42,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 513 places, 564 transitions, 1320 flow [2023-09-01 00:36:42,536 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:36:42,536 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 513 places, 564 transitions, 1320 flow [2023-09-01 00:36:42,537 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 513 places, 564 transitions, 1320 flow [2023-09-01 00:36:42,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 513 places, 564 transitions, 1320 flow [2023-09-01 00:36:42,794 INFO L130 PetriNetUnfolder]: 124/1039 cut-off events. [2023-09-01 00:36:42,794 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 00:36:42,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 1039 events. 124/1039 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 4212 event pairs, 0 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 1034. Up to 26 conditions per place. [2023-09-01 00:36:42,886 INFO L119 LiptonReduction]: Number of co-enabled transitions 255840 [2023-09-01 00:36:48,667 INFO L134 LiptonReduction]: Checked pairs total: 805086 [2023-09-01 00:36:48,667 INFO L136 LiptonReduction]: Total number of compositions: 429 [2023-09-01 00:36:48,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:48,669 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:48,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:48,732 INFO L130 PetriNetUnfolder]: 104/522 cut-off events. [2023-09-01 00:36:48,732 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 00:36:48,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:48,732 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:36:48,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:48,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash -148608392, now seen corresponding path program 1 times [2023-09-01 00:36:48,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:48,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572681118] [2023-09-01 00:36:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:48,756 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:48,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:48,782 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:48,782 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:48,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:36:48,782 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:48,783 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:48,783 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:48,783 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:36:48,822 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:36:48,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 550 places, 605 transitions, 1431 flow [2023-09-01 00:36:49,056 INFO L130 PetriNetUnfolder]: 134/1120 cut-off events. [2023-09-01 00:36:49,056 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 00:36:49,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 1120 events. 134/1120 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 4581 event pairs, 0 based on Foata normal form. 0/784 useless extension candidates. Maximal degree in co-relation 1128. Up to 28 conditions per place. [2023-09-01 00:36:49,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 550 places, 605 transitions, 1431 flow [2023-09-01 00:36:49,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 550 places, 605 transitions, 1431 flow [2023-09-01 00:36:49,108 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:36:49,109 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 550 places, 605 transitions, 1431 flow [2023-09-01 00:36:49,109 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 550 places, 605 transitions, 1431 flow [2023-09-01 00:36:49,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 550 places, 605 transitions, 1431 flow [2023-09-01 00:36:49,372 INFO L130 PetriNetUnfolder]: 134/1120 cut-off events. [2023-09-01 00:36:49,373 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 00:36:49,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 1120 events. 134/1120 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 4581 event pairs, 0 based on Foata normal form. 0/784 useless extension candidates. Maximal degree in co-relation 1128. Up to 28 conditions per place. [2023-09-01 00:36:49,512 INFO L119 LiptonReduction]: Number of co-enabled transitions 298480 [2023-09-01 00:36:55,749 INFO L134 LiptonReduction]: Checked pairs total: 943378 [2023-09-01 00:36:55,749 INFO L136 LiptonReduction]: Total number of compositions: 465 [2023-09-01 00:36:55,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:55,751 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:55,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:55,816 INFO L130 PetriNetUnfolder]: 113/566 cut-off events. [2023-09-01 00:36:55,816 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 00:36:55,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:55,816 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:36:55,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:55,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash -637275749, now seen corresponding path program 1 times [2023-09-01 00:36:55,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:55,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165778848] [2023-09-01 00:36:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:55,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:55,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:55,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:55,879 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:55,879 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:55,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 00:36:55,879 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:55,880 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:55,880 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:55,880 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 00:36:55,920 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:36:55,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 587 places, 646 transitions, 1544 flow [2023-09-01 00:36:56,206 INFO L130 PetriNetUnfolder]: 144/1201 cut-off events. [2023-09-01 00:36:56,206 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 00:36:56,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 1201 events. 144/1201 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 4896 event pairs, 0 based on Foata normal form. 0/840 useless extension candidates. Maximal degree in co-relation 1225. Up to 30 conditions per place. [2023-09-01 00:36:56,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 587 places, 646 transitions, 1544 flow [2023-09-01 00:36:56,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 587 places, 646 transitions, 1544 flow [2023-09-01 00:36:56,248 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:36:56,248 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 587 places, 646 transitions, 1544 flow [2023-09-01 00:36:56,249 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 587 places, 646 transitions, 1544 flow [2023-09-01 00:36:56,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 587 places, 646 transitions, 1544 flow [2023-09-01 00:36:56,525 INFO L130 PetriNetUnfolder]: 144/1201 cut-off events. [2023-09-01 00:36:56,526 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 00:36:56,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 1201 events. 144/1201 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 4896 event pairs, 0 based on Foata normal form. 0/840 useless extension candidates. Maximal degree in co-relation 1225. Up to 30 conditions per place. [2023-09-01 00:36:56,695 INFO L119 LiptonReduction]: Number of co-enabled transitions 344400 [2023-09-01 00:37:03,619 INFO L134 LiptonReduction]: Checked pairs total: 1216619 [2023-09-01 00:37:03,619 INFO L136 LiptonReduction]: Total number of compositions: 494 [2023-09-01 00:37:03,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:37:03,620 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:37:03,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:37:03,686 INFO L130 PetriNetUnfolder]: 122/610 cut-off events. [2023-09-01 00:37:03,686 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 00:37:03,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:37:03,686 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:37:03,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:37:03,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:37:03,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1086537327, now seen corresponding path program 1 times [2023-09-01 00:37:03,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:37:03,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248986235] [2023-09-01 00:37:03,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:37:03,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:37:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:03,746 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:37:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:03,804 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:37:03,804 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:37:03,805 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:37:03,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 00:37:03,805 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:37:03,805 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:37:03,806 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:37:03,806 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-09-01 00:37:03,853 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:37:03,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 624 places, 687 transitions, 1659 flow [2023-09-01 00:37:04,177 INFO L130 PetriNetUnfolder]: 154/1282 cut-off events. [2023-09-01 00:37:04,177 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 00:37:04,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 1282 events. 154/1282 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 5268 event pairs, 0 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 1323. Up to 32 conditions per place. [2023-09-01 00:37:04,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 624 places, 687 transitions, 1659 flow [2023-09-01 00:37:04,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 624 places, 687 transitions, 1659 flow [2023-09-01 00:37:04,214 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:37:04,214 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 624 places, 687 transitions, 1659 flow [2023-09-01 00:37:04,214 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 624 places, 687 transitions, 1659 flow [2023-09-01 00:37:04,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 624 places, 687 transitions, 1659 flow [2023-09-01 00:37:04,465 INFO L130 PetriNetUnfolder]: 154/1282 cut-off events. [2023-09-01 00:37:04,465 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 00:37:04,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 1282 events. 154/1282 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 5268 event pairs, 0 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 1323. Up to 32 conditions per place. [2023-09-01 00:37:04,661 INFO L119 LiptonReduction]: Number of co-enabled transitions 393600 [2023-09-01 00:37:11,752 INFO L134 LiptonReduction]: Checked pairs total: 1248163 [2023-09-01 00:37:11,752 INFO L136 LiptonReduction]: Total number of compositions: 519 [2023-09-01 00:37:11,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:37:11,754 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:37:11,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:37:11,856 INFO L130 PetriNetUnfolder]: 131/654 cut-off events. [2023-09-01 00:37:11,857 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 00:37:11,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:37:11,857 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] [2023-09-01 00:37:11,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:37:11,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:37:11,857 INFO L85 PathProgramCache]: Analyzing trace with hash 575277552, now seen corresponding path program 1 times [2023-09-01 00:37:11,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:37:11,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525919762] [2023-09-01 00:37:11,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:37:11,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:37:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:11,886 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:37:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:11,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:37:11,918 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:37:11,918 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:37:11,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 00:37:11,918 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:37:11,919 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:37:11,919 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:37:11,919 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-09-01 00:37:11,966 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:37:11,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 661 places, 728 transitions, 1776 flow [2023-09-01 00:37:12,264 INFO L130 PetriNetUnfolder]: 164/1363 cut-off events. [2023-09-01 00:37:12,265 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 00:37:12,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 1363 events. 164/1363 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 5604 event pairs, 0 based on Foata normal form. 0/952 useless extension candidates. Maximal degree in co-relation 1422. Up to 34 conditions per place. [2023-09-01 00:37:12,305 INFO L82 GeneralOperation]: Start removeDead. Operand has 661 places, 728 transitions, 1776 flow [2023-09-01 00:37:12,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 661 places, 728 transitions, 1776 flow [2023-09-01 00:37:12,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:37:12,319 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 661 places, 728 transitions, 1776 flow [2023-09-01 00:37:12,319 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 661 places, 728 transitions, 1776 flow [2023-09-01 00:37:12,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 661 places, 728 transitions, 1776 flow [2023-09-01 00:37:12,617 INFO L130 PetriNetUnfolder]: 164/1363 cut-off events. [2023-09-01 00:37:12,617 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 00:37:12,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 1363 events. 164/1363 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 5604 event pairs, 0 based on Foata normal form. 0/952 useless extension candidates. Maximal degree in co-relation 1422. Up to 34 conditions per place. [2023-09-01 00:37:12,748 INFO L119 LiptonReduction]: Number of co-enabled transitions 446080 [2023-09-01 00:37:20,205 INFO L134 LiptonReduction]: Checked pairs total: 1419962 [2023-09-01 00:37:20,205 INFO L136 LiptonReduction]: Total number of compositions: 557 [2023-09-01 00:37:20,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:37:20,206 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:37:20,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:37:20,296 INFO L130 PetriNetUnfolder]: 140/698 cut-off events. [2023-09-01 00:37:20,296 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 00:37:20,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:37:20,296 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] [2023-09-01 00:37:20,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:37:20,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:37:20,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1309614271, now seen corresponding path program 1 times [2023-09-01 00:37:20,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:37:20,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133507330] [2023-09-01 00:37:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:37:20,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:37:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:20,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:37:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:20,359 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:37:20,359 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:37:20,359 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:37:20,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 00:37:20,360 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:37:20,360 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:37:20,360 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:37:20,360 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-09-01 00:37:20,414 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:37:20,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 769 transitions, 1895 flow [2023-09-01 00:37:20,850 INFO L130 PetriNetUnfolder]: 174/1444 cut-off events. [2023-09-01 00:37:20,850 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 00:37:20,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1649 conditions, 1444 events. 174/1444 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 5952 event pairs, 0 based on Foata normal form. 0/1008 useless extension candidates. Maximal degree in co-relation 1522. Up to 36 conditions per place. [2023-09-01 00:37:20,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 698 places, 769 transitions, 1895 flow [2023-09-01 00:37:20,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 698 places, 769 transitions, 1895 flow [2023-09-01 00:37:20,902 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:37:20,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 698 places, 769 transitions, 1895 flow [2023-09-01 00:37:20,902 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 698 places, 769 transitions, 1895 flow [2023-09-01 00:37:20,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 769 transitions, 1895 flow [2023-09-01 00:37:21,210 INFO L130 PetriNetUnfolder]: 174/1444 cut-off events. [2023-09-01 00:37:21,210 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 00:37:21,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1649 conditions, 1444 events. 174/1444 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 5952 event pairs, 0 based on Foata normal form. 0/1008 useless extension candidates. Maximal degree in co-relation 1522. Up to 36 conditions per place. [2023-09-01 00:37:21,380 INFO L119 LiptonReduction]: Number of co-enabled transitions 501840 [2023-09-01 00:37:29,480 INFO L134 LiptonReduction]: Checked pairs total: 1596246 [2023-09-01 00:37:29,481 INFO L136 LiptonReduction]: Total number of compositions: 596 [2023-09-01 00:37:29,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:37:29,483 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:37:29,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:37:29,582 INFO L130 PetriNetUnfolder]: 149/742 cut-off events. [2023-09-01 00:37:29,582 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 00:37:29,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:37:29,582 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] [2023-09-01 00:37:29,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:37:29,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:37:29,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1772532637, now seen corresponding path program 1 times [2023-09-01 00:37:29,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:37:29,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56413954] [2023-09-01 00:37:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:37:29,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:37:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:29,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:37:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:29,665 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:37:29,666 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:37:29,666 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:37:29,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 00:37:29,666 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:37:29,667 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:37:29,667 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:37:29,667 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-09-01 00:37:29,719 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:37:29,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 735 places, 810 transitions, 2016 flow [2023-09-01 00:37:30,168 INFO L130 PetriNetUnfolder]: 184/1525 cut-off events. [2023-09-01 00:37:30,168 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 00:37:30,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 1525 events. 184/1525 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 6308 event pairs, 0 based on Foata normal form. 0/1064 useless extension candidates. Maximal degree in co-relation 1623. Up to 38 conditions per place. [2023-09-01 00:37:30,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 735 places, 810 transitions, 2016 flow [2023-09-01 00:37:30,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 735 places, 810 transitions, 2016 flow [2023-09-01 00:37:30,237 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:37:30,237 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 735 places, 810 transitions, 2016 flow [2023-09-01 00:37:30,237 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 735 places, 810 transitions, 2016 flow [2023-09-01 00:37:30,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 735 places, 810 transitions, 2016 flow [2023-09-01 00:37:30,607 INFO L130 PetriNetUnfolder]: 184/1525 cut-off events. [2023-09-01 00:37:30,607 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 00:37:30,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 1525 events. 184/1525 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 6308 event pairs, 0 based on Foata normal form. 0/1064 useless extension candidates. Maximal degree in co-relation 1623. Up to 38 conditions per place. [2023-09-01 00:37:30,878 INFO L119 LiptonReduction]: Number of co-enabled transitions 560880 [2023-09-01 00:37:39,244 INFO L134 LiptonReduction]: Checked pairs total: 1788915 [2023-09-01 00:37:39,245 INFO L136 LiptonReduction]: Total number of compositions: 616 [2023-09-01 00:37:39,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:37:39,246 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:37:39,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:37:39,371 INFO L130 PetriNetUnfolder]: 158/786 cut-off events. [2023-09-01 00:37:39,371 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 00:37:39,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:37:39,371 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] [2023-09-01 00:37:39,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:37:39,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:37:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash -244164940, now seen corresponding path program 1 times [2023-09-01 00:37:39,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:37:39,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319801619] [2023-09-01 00:37:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:37:39,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:37:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:39,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:37:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:39,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:37:39,447 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:37:39,447 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:37:39,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 00:37:39,448 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:37:39,448 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:37:39,448 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:37:39,448 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-09-01 00:37:39,504 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:37:39,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 772 places, 851 transitions, 2139 flow [2023-09-01 00:37:39,935 INFO L130 PetriNetUnfolder]: 194/1606 cut-off events. [2023-09-01 00:37:39,935 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 00:37:39,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 1606 events. 194/1606 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 6649 event pairs, 0 based on Foata normal form. 0/1120 useless extension candidates. Maximal degree in co-relation 1725. Up to 40 conditions per place. [2023-09-01 00:37:39,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 772 places, 851 transitions, 2139 flow [2023-09-01 00:37:40,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 772 places, 851 transitions, 2139 flow [2023-09-01 00:37:40,014 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:37:40,014 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 772 places, 851 transitions, 2139 flow [2023-09-01 00:37:40,014 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 772 places, 851 transitions, 2139 flow [2023-09-01 00:37:40,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 772 places, 851 transitions, 2139 flow [2023-09-01 00:37:40,395 INFO L130 PetriNetUnfolder]: 194/1606 cut-off events. [2023-09-01 00:37:40,395 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 00:37:40,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 1606 events. 194/1606 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 6649 event pairs, 0 based on Foata normal form. 0/1120 useless extension candidates. Maximal degree in co-relation 1725. Up to 40 conditions per place. [2023-09-01 00:37:40,666 INFO L119 LiptonReduction]: Number of co-enabled transitions 623200 [2023-09-01 00:37:49,344 INFO L134 LiptonReduction]: Checked pairs total: 2001718 [2023-09-01 00:37:49,344 INFO L136 LiptonReduction]: Total number of compositions: 643 [2023-09-01 00:37:49,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:37:49,346 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:37:49,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:37:49,463 INFO L130 PetriNetUnfolder]: 167/830 cut-off events. [2023-09-01 00:37:49,463 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 00:37:49,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:37:49,463 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] [2023-09-01 00:37:49,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:37:49,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:37:49,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1760671588, now seen corresponding path program 1 times [2023-09-01 00:37:49,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:37:49,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439569316] [2023-09-01 00:37:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:37:49,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:37:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:49,495 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:37:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:37:49,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:37:49,537 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:37:49,537 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:37:49,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 00:37:49,538 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:37:49,538 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:37:49,538 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:37:49,538 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-09-01 00:37:49,597 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:37:49,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 809 places, 892 transitions, 2264 flow [2023-09-01 00:37:50,162 INFO L130 PetriNetUnfolder]: 204/1687 cut-off events. [2023-09-01 00:37:50,162 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 00:37:50,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 1687 events. 204/1687 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 6908 event pairs, 0 based on Foata normal form. 0/1176 useless extension candidates. Maximal degree in co-relation 1828. Up to 42 conditions per place. [2023-09-01 00:37:50,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 809 places, 892 transitions, 2264 flow [2023-09-01 00:37:50,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 809 places, 892 transitions, 2264 flow [2023-09-01 00:37:50,248 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:37:50,248 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 809 places, 892 transitions, 2264 flow [2023-09-01 00:37:50,248 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 809 places, 892 transitions, 2264 flow [2023-09-01 00:37:50,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 809 places, 892 transitions, 2264 flow [2023-09-01 00:37:50,675 INFO L130 PetriNetUnfolder]: 204/1687 cut-off events. [2023-09-01 00:37:50,675 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 00:37:50,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 1687 events. 204/1687 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 6908 event pairs, 0 based on Foata normal form. 0/1176 useless extension candidates. Maximal degree in co-relation 1828. Up to 42 conditions per place. [2023-09-01 00:37:51,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 688800 [2023-09-01 00:38:00,152 INFO L134 LiptonReduction]: Checked pairs total: 2214983 [2023-09-01 00:38:00,152 INFO L136 LiptonReduction]: Total number of compositions: 676 [2023-09-01 00:38:00,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:00,154 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:00,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:00,305 INFO L130 PetriNetUnfolder]: 176/874 cut-off events. [2023-09-01 00:38:00,305 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 00:38:00,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:00,305 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] [2023-09-01 00:38:00,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:00,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:00,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2140251125, now seen corresponding path program 1 times [2023-09-01 00:38:00,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:00,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618333511] [2023-09-01 00:38:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:00,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:00,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:00,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:00,386 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:00,386 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:00,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 00:38:00,386 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:00,387 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:00,387 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:00,387 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-09-01 00:38:00,452 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:38:00,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 846 places, 933 transitions, 2391 flow [2023-09-01 00:38:00,998 INFO L130 PetriNetUnfolder]: 214/1768 cut-off events. [2023-09-01 00:38:00,998 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 00:38:01,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 1768 events. 214/1768 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 7259 event pairs, 0 based on Foata normal form. 0/1232 useless extension candidates. Maximal degree in co-relation 1932. Up to 44 conditions per place. [2023-09-01 00:38:01,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 846 places, 933 transitions, 2391 flow [2023-09-01 00:38:01,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 846 places, 933 transitions, 2391 flow [2023-09-01 00:38:01,082 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:01,082 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 846 places, 933 transitions, 2391 flow [2023-09-01 00:38:01,082 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 846 places, 933 transitions, 2391 flow [2023-09-01 00:38:01,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 846 places, 933 transitions, 2391 flow [2023-09-01 00:38:01,530 INFO L130 PetriNetUnfolder]: 214/1768 cut-off events. [2023-09-01 00:38:01,530 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 00:38:01,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 1768 events. 214/1768 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 7259 event pairs, 0 based on Foata normal form. 0/1232 useless extension candidates. Maximal degree in co-relation 1932. Up to 44 conditions per place. [2023-09-01 00:38:02,023 INFO L119 LiptonReduction]: Number of co-enabled transitions 757680 [2023-09-01 00:38:11,387 INFO L134 LiptonReduction]: Checked pairs total: 2429379 [2023-09-01 00:38:11,388 INFO L136 LiptonReduction]: Total number of compositions: 695 [2023-09-01 00:38:11,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:11,389 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:11,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:11,529 INFO L130 PetriNetUnfolder]: 185/918 cut-off events. [2023-09-01 00:38:11,530 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 00:38:11,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:11,530 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] [2023-09-01 00:38:11,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:11,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:11,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2099268952, now seen corresponding path program 1 times [2023-09-01 00:38:11,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:11,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706726424] [2023-09-01 00:38:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:11,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:11,564 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:11,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:11,606 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:11,606 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:11,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 00:38:11,606 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:11,607 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:11,607 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:11,607 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-09-01 00:38:11,667 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:38:11,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 883 places, 974 transitions, 2520 flow [2023-09-01 00:38:12,343 INFO L130 PetriNetUnfolder]: 224/1849 cut-off events. [2023-09-01 00:38:12,343 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 00:38:12,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2169 conditions, 1849 events. 224/1849 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 7566 event pairs, 0 based on Foata normal form. 0/1288 useless extension candidates. Maximal degree in co-relation 2037. Up to 46 conditions per place. [2023-09-01 00:38:12,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 883 places, 974 transitions, 2520 flow [2023-09-01 00:38:12,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 883 places, 974 transitions, 2520 flow [2023-09-01 00:38:12,512 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:12,512 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 883 places, 974 transitions, 2520 flow [2023-09-01 00:38:12,512 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 883 places, 974 transitions, 2520 flow [2023-09-01 00:38:12,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 883 places, 974 transitions, 2520 flow [2023-09-01 00:38:13,152 INFO L130 PetriNetUnfolder]: 224/1849 cut-off events. [2023-09-01 00:38:13,152 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 00:38:13,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2169 conditions, 1849 events. 224/1849 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 7566 event pairs, 0 based on Foata normal form. 0/1288 useless extension candidates. Maximal degree in co-relation 2037. Up to 46 conditions per place. [2023-09-01 00:38:13,417 INFO L119 LiptonReduction]: Number of co-enabled transitions 829840 [2023-09-01 00:38:23,426 INFO L134 LiptonReduction]: Checked pairs total: 2659638 [2023-09-01 00:38:23,426 INFO L136 LiptonReduction]: Total number of compositions: 729 [2023-09-01 00:38:23,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:23,428 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:23,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:23,640 INFO L130 PetriNetUnfolder]: 194/962 cut-off events. [2023-09-01 00:38:23,640 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 00:38:23,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:23,640 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] [2023-09-01 00:38:23,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:23,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1121236821, now seen corresponding path program 1 times [2023-09-01 00:38:23,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:23,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749744804] [2023-09-01 00:38:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:23,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:23,673 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:23,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:23,718 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:23,718 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:23,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 00:38:23,719 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:23,719 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:23,719 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:23,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-09-01 00:38:23,784 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:38:23,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 920 places, 1015 transitions, 2651 flow [2023-09-01 00:38:24,427 INFO L130 PetriNetUnfolder]: 234/1930 cut-off events. [2023-09-01 00:38:24,427 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 00:38:24,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 1930 events. 234/1930 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 7946 event pairs, 0 based on Foata normal form. 0/1344 useless extension candidates. Maximal degree in co-relation 2143. Up to 48 conditions per place. [2023-09-01 00:38:24,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 920 places, 1015 transitions, 2651 flow [2023-09-01 00:38:24,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 920 places, 1015 transitions, 2651 flow [2023-09-01 00:38:24,609 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:24,609 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 920 places, 1015 transitions, 2651 flow [2023-09-01 00:38:24,610 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 920 places, 1015 transitions, 2651 flow [2023-09-01 00:38:24,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 920 places, 1015 transitions, 2651 flow [2023-09-01 00:38:25,274 INFO L130 PetriNetUnfolder]: 234/1930 cut-off events. [2023-09-01 00:38:25,274 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 00:38:25,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 1930 events. 234/1930 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 7946 event pairs, 0 based on Foata normal form. 0/1344 useless extension candidates. Maximal degree in co-relation 2143. Up to 48 conditions per place. [2023-09-01 00:38:25,589 INFO L119 LiptonReduction]: Number of co-enabled transitions 905280 [2023-09-01 00:38:35,442 INFO L134 LiptonReduction]: Checked pairs total: 2901686 [2023-09-01 00:38:35,442 INFO L136 LiptonReduction]: Total number of compositions: 744 [2023-09-01 00:38:35,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:35,444 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:35,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:35,687 INFO L130 PetriNetUnfolder]: 203/1006 cut-off events. [2023-09-01 00:38:35,687 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 00:38:35,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:35,687 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] [2023-09-01 00:38:35,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:35,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:35,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1163957287, now seen corresponding path program 1 times [2023-09-01 00:38:35,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:35,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431151638] [2023-09-01 00:38:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:35,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:35,725 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:35,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:35,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:35,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:35,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 00:38:35,778 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:35,778 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:35,778 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:35,778 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-09-01 00:38:35,854 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:38:35,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 957 places, 1056 transitions, 2784 flow [2023-09-01 00:38:36,708 INFO L130 PetriNetUnfolder]: 244/2011 cut-off events. [2023-09-01 00:38:36,708 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 00:38:36,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 2011 events. 244/2011 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 8272 event pairs, 0 based on Foata normal form. 0/1400 useless extension candidates. Maximal degree in co-relation 2250. Up to 50 conditions per place. [2023-09-01 00:38:36,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 957 places, 1056 transitions, 2784 flow [2023-09-01 00:38:36,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 957 places, 1056 transitions, 2784 flow [2023-09-01 00:38:36,798 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:36,798 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 957 places, 1056 transitions, 2784 flow [2023-09-01 00:38:36,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 957 places, 1056 transitions, 2784 flow [2023-09-01 00:38:36,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 957 places, 1056 transitions, 2784 flow [2023-09-01 00:38:37,432 INFO L130 PetriNetUnfolder]: 244/2011 cut-off events. [2023-09-01 00:38:37,432 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 00:38:37,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 2011 events. 244/2011 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 8272 event pairs, 0 based on Foata normal form. 0/1400 useless extension candidates. Maximal degree in co-relation 2250. Up to 50 conditions per place. [2023-09-01 00:38:37,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 984000 [2023-09-01 00:38:48,087 INFO L134 LiptonReduction]: Checked pairs total: 3166235 [2023-09-01 00:38:48,087 INFO L136 LiptonReduction]: Total number of compositions: 780 [2023-09-01 00:38:48,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:38:48,088 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:38:48,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:38:48,261 INFO L130 PetriNetUnfolder]: 212/1050 cut-off events. [2023-09-01 00:38:48,261 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 00:38:48,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:38:48,262 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] [2023-09-01 00:38:48,262 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:38:48,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:38:48,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1826191747, now seen corresponding path program 1 times [2023-09-01 00:38:48,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:38:48,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372549254] [2023-09-01 00:38:48,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:38:48,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:38:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:48,295 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:38:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:38:48,342 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:38:48,343 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:38:48,343 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:38:48,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 00:38:48,343 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:38:48,343 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:38:48,344 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:38:48,344 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-09-01 00:38:48,410 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:38:48,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 994 places, 1097 transitions, 2919 flow [2023-09-01 00:38:49,198 INFO L130 PetriNetUnfolder]: 254/2092 cut-off events. [2023-09-01 00:38:49,198 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 00:38:49,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2493 conditions, 2092 events. 254/2092 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 8642 event pairs, 0 based on Foata normal form. 0/1456 useless extension candidates. Maximal degree in co-relation 2358. Up to 52 conditions per place. [2023-09-01 00:38:49,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 994 places, 1097 transitions, 2919 flow [2023-09-01 00:38:49,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 994 places, 1097 transitions, 2919 flow [2023-09-01 00:38:49,423 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:38:49,423 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 994 places, 1097 transitions, 2919 flow [2023-09-01 00:38:49,423 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 994 places, 1097 transitions, 2919 flow [2023-09-01 00:38:49,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 994 places, 1097 transitions, 2919 flow [2023-09-01 00:38:50,150 INFO L130 PetriNetUnfolder]: 254/2092 cut-off events. [2023-09-01 00:38:50,151 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 00:38:50,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2493 conditions, 2092 events. 254/2092 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 8642 event pairs, 0 based on Foata normal form. 0/1456 useless extension candidates. Maximal degree in co-relation 2358. Up to 52 conditions per place. [2023-09-01 00:38:50,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 1066000 [2023-09-01 00:39:01,526 INFO L134 LiptonReduction]: Checked pairs total: 3425636 [2023-09-01 00:39:01,526 INFO L136 LiptonReduction]: Total number of compositions: 818 [2023-09-01 00:39:01,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:01,528 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:01,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:01,788 INFO L130 PetriNetUnfolder]: 221/1094 cut-off events. [2023-09-01 00:39:01,789 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 00:39:01,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:01,789 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] [2023-09-01 00:39:01,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:01,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:01,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1078948769, now seen corresponding path program 1 times [2023-09-01 00:39:01,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:01,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405864777] [2023-09-01 00:39:01,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:01,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:01,838 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:01,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:01,908 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:01,908 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:01,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 00:39:01,909 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:01,909 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:01,909 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:01,909 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-09-01 00:39:01,976 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:39:01,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1031 places, 1138 transitions, 3056 flow [2023-09-01 00:39:02,694 INFO L130 PetriNetUnfolder]: 264/2173 cut-off events. [2023-09-01 00:39:02,694 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-09-01 00:39:02,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2603 conditions, 2173 events. 264/2173 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 8936 event pairs, 0 based on Foata normal form. 0/1512 useless extension candidates. Maximal degree in co-relation 2467. Up to 54 conditions per place. [2023-09-01 00:39:02,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 1031 places, 1138 transitions, 3056 flow [2023-09-01 00:39:02,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1031 places, 1138 transitions, 3056 flow [2023-09-01 00:39:02,841 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:02,841 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1031 places, 1138 transitions, 3056 flow [2023-09-01 00:39:02,842 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1031 places, 1138 transitions, 3056 flow [2023-09-01 00:39:02,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1031 places, 1138 transitions, 3056 flow [2023-09-01 00:39:03,547 INFO L130 PetriNetUnfolder]: 264/2173 cut-off events. [2023-09-01 00:39:03,548 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-09-01 00:39:03,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2603 conditions, 2173 events. 264/2173 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 8936 event pairs, 0 based on Foata normal form. 0/1512 useless extension candidates. Maximal degree in co-relation 2467. Up to 54 conditions per place. [2023-09-01 00:39:04,005 INFO L119 LiptonReduction]: Number of co-enabled transitions 1151280 [2023-09-01 00:39:15,724 INFO L134 LiptonReduction]: Checked pairs total: 4156616 [2023-09-01 00:39:15,725 INFO L136 LiptonReduction]: Total number of compositions: 864 [2023-09-01 00:39:15,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:15,726 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:15,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:15,940 INFO L130 PetriNetUnfolder]: 230/1138 cut-off events. [2023-09-01 00:39:15,940 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-09-01 00:39:15,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:15,940 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] [2023-09-01 00:39:15,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:15,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:15,941 INFO L85 PathProgramCache]: Analyzing trace with hash -936598884, now seen corresponding path program 1 times [2023-09-01 00:39:15,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:15,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258951513] [2023-09-01 00:39:15,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:15,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:15,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:16,034 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:16,034 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:16,035 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:16,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-09-01 00:39:16,035 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:16,035 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:16,035 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:16,035 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-09-01 00:39:16,107 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:39:16,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1068 places, 1179 transitions, 3195 flow [2023-09-01 00:39:17,067 INFO L130 PetriNetUnfolder]: 274/2254 cut-off events. [2023-09-01 00:39:17,067 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-09-01 00:39:17,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 2254 events. 274/2254 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 9313 event pairs, 0 based on Foata normal form. 0/1568 useless extension candidates. Maximal degree in co-relation 2577. Up to 56 conditions per place. [2023-09-01 00:39:17,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 1068 places, 1179 transitions, 3195 flow [2023-09-01 00:39:17,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1068 places, 1179 transitions, 3195 flow [2023-09-01 00:39:17,236 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:17,236 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1068 places, 1179 transitions, 3195 flow [2023-09-01 00:39:17,236 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1068 places, 1179 transitions, 3195 flow [2023-09-01 00:39:17,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1068 places, 1179 transitions, 3195 flow [2023-09-01 00:39:18,074 INFO L130 PetriNetUnfolder]: 274/2254 cut-off events. [2023-09-01 00:39:18,074 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-09-01 00:39:18,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 2254 events. 274/2254 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 9313 event pairs, 0 based on Foata normal form. 0/1568 useless extension candidates. Maximal degree in co-relation 2577. Up to 56 conditions per place. [2023-09-01 00:39:18,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 1239840 [2023-09-01 00:39:30,737 INFO L134 LiptonReduction]: Checked pairs total: 3994908 [2023-09-01 00:39:30,738 INFO L136 LiptonReduction]: Total number of compositions: 884 [2023-09-01 00:39:30,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:30,739 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:30,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:30,975 INFO L130 PetriNetUnfolder]: 239/1182 cut-off events. [2023-09-01 00:39:30,975 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-09-01 00:39:30,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:30,975 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] [2023-09-01 00:39:30,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:30,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash -141330671, now seen corresponding path program 1 times [2023-09-01 00:39:30,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:30,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565825584] [2023-09-01 00:39:30,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:30,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:31,015 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:31,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:31,070 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:31,070 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:31,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-09-01 00:39:31,071 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:31,071 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:31,071 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:31,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-09-01 00:39:31,147 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:39:31,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1105 places, 1220 transitions, 3336 flow [2023-09-01 00:39:32,040 INFO L130 PetriNetUnfolder]: 284/2335 cut-off events. [2023-09-01 00:39:32,040 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-09-01 00:39:32,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2826 conditions, 2335 events. 284/2335 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 9664 event pairs, 0 based on Foata normal form. 0/1624 useless extension candidates. Maximal degree in co-relation 2688. Up to 58 conditions per place. [2023-09-01 00:39:32,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 1105 places, 1220 transitions, 3336 flow [2023-09-01 00:39:32,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1105 places, 1220 transitions, 3336 flow [2023-09-01 00:39:32,220 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:32,220 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1105 places, 1220 transitions, 3336 flow [2023-09-01 00:39:32,221 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1105 places, 1220 transitions, 3336 flow [2023-09-01 00:39:32,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1105 places, 1220 transitions, 3336 flow [2023-09-01 00:39:33,065 INFO L130 PetriNetUnfolder]: 284/2335 cut-off events. [2023-09-01 00:39:33,066 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-09-01 00:39:33,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2826 conditions, 2335 events. 284/2335 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 9664 event pairs, 0 based on Foata normal form. 0/1624 useless extension candidates. Maximal degree in co-relation 2688. Up to 58 conditions per place. [2023-09-01 00:39:33,607 INFO L119 LiptonReduction]: Number of co-enabled transitions 1331680 [2023-09-01 00:39:46,317 INFO L134 LiptonReduction]: Checked pairs total: 4303324 [2023-09-01 00:39:46,318 INFO L136 LiptonReduction]: Total number of compositions: 926 [2023-09-01 00:39:46,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:46,319 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:46,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:46,572 INFO L130 PetriNetUnfolder]: 248/1226 cut-off events. [2023-09-01 00:39:46,572 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-09-01 00:39:46,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:46,572 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] [2023-09-01 00:39:46,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:46,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:46,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1891836264, now seen corresponding path program 1 times [2023-09-01 00:39:46,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:46,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724587006] [2023-09-01 00:39:46,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:46,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:46,614 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:46,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:46,678 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:46,678 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:46,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-09-01 00:39:46,678 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:46,679 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:46,679 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:46,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-09-01 00:39:46,756 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:39:46,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1142 places, 1261 transitions, 3479 flow [2023-09-01 00:39:47,686 INFO L130 PetriNetUnfolder]: 294/2416 cut-off events. [2023-09-01 00:39:47,687 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-09-01 00:39:47,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2939 conditions, 2416 events. 294/2416 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 9985 event pairs, 0 based on Foata normal form. 0/1680 useless extension candidates. Maximal degree in co-relation 2800. Up to 60 conditions per place. [2023-09-01 00:39:47,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 1142 places, 1261 transitions, 3479 flow [2023-09-01 00:39:47,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1142 places, 1261 transitions, 3479 flow [2023-09-01 00:39:47,879 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:47,879 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1142 places, 1261 transitions, 3479 flow [2023-09-01 00:39:47,880 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1142 places, 1261 transitions, 3479 flow [2023-09-01 00:39:47,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1142 places, 1261 transitions, 3479 flow [2023-09-01 00:39:48,967 INFO L130 PetriNetUnfolder]: 294/2416 cut-off events. [2023-09-01 00:39:48,968 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-09-01 00:39:49,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2939 conditions, 2416 events. 294/2416 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 9985 event pairs, 0 based on Foata normal form. 0/1680 useless extension candidates. Maximal degree in co-relation 2800. Up to 60 conditions per place. [2023-09-01 00:39:49,375 INFO L119 LiptonReduction]: Number of co-enabled transitions 1426800 [2023-09-01 00:40:02,728 INFO L134 LiptonReduction]: Checked pairs total: 4626723 [2023-09-01 00:40:02,729 INFO L136 LiptonReduction]: Total number of compositions: 958 [2023-09-01 00:40:02,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:02,730 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:02,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:03,014 INFO L130 PetriNetUnfolder]: 257/1270 cut-off events. [2023-09-01 00:40:03,014 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-09-01 00:40:03,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:03,014 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] [2023-09-01 00:40:03,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:03,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:03,015 INFO L85 PathProgramCache]: Analyzing trace with hash 193319396, now seen corresponding path program 1 times [2023-09-01 00:40:03,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:03,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917877315] [2023-09-01 00:40:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:03,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:03,063 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:03,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:03,136 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:03,137 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:03,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-09-01 00:40:03,137 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:03,137 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:03,137 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:03,137 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-09-01 00:40:03,216 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:40:03,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1179 places, 1302 transitions, 3624 flow [2023-09-01 00:40:04,214 INFO L130 PetriNetUnfolder]: 304/2497 cut-off events. [2023-09-01 00:40:04,214 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-09-01 00:40:04,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 2497 events. 304/2497 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 10361 event pairs, 0 based on Foata normal form. 0/1736 useless extension candidates. Maximal degree in co-relation 2913. Up to 62 conditions per place. [2023-09-01 00:40:04,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 1179 places, 1302 transitions, 3624 flow [2023-09-01 00:40:04,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1179 places, 1302 transitions, 3624 flow [2023-09-01 00:40:04,445 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:04,445 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1179 places, 1302 transitions, 3624 flow [2023-09-01 00:40:04,445 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1179 places, 1302 transitions, 3624 flow [2023-09-01 00:40:04,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1179 places, 1302 transitions, 3624 flow [2023-09-01 00:40:05,478 INFO L130 PetriNetUnfolder]: 304/2497 cut-off events. [2023-09-01 00:40:05,479 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-09-01 00:40:05,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 2497 events. 304/2497 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 10361 event pairs, 0 based on Foata normal form. 0/1736 useless extension candidates. Maximal degree in co-relation 2913. Up to 62 conditions per place. [2023-09-01 00:40:05,986 INFO L119 LiptonReduction]: Number of co-enabled transitions 1525200 [2023-09-01 00:40:19,702 INFO L134 LiptonReduction]: Checked pairs total: 5506268 [2023-09-01 00:40:19,703 INFO L136 LiptonReduction]: Total number of compositions: 968 [2023-09-01 00:40:19,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:19,704 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:19,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:20,009 INFO L130 PetriNetUnfolder]: 266/1314 cut-off events. [2023-09-01 00:40:20,009 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-09-01 00:40:20,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:20,009 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] [2023-09-01 00:40:20,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:20,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:20,010 INFO L85 PathProgramCache]: Analyzing trace with hash -321812490, now seen corresponding path program 1 times [2023-09-01 00:40:20,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:20,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835978344] [2023-09-01 00:40:20,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:20,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:20,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:20,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:20,126 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:20,126 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:20,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-09-01 00:40:20,127 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:20,127 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:20,127 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:20,127 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-09-01 00:40:20,206 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:40:20,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1216 places, 1343 transitions, 3771 flow [2023-09-01 00:40:21,415 INFO L130 PetriNetUnfolder]: 314/2578 cut-off events. [2023-09-01 00:40:21,415 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-09-01 00:40:21,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3168 conditions, 2578 events. 314/2578 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 10706 event pairs, 0 based on Foata normal form. 0/1792 useless extension candidates. Maximal degree in co-relation 3027. Up to 64 conditions per place. [2023-09-01 00:40:21,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 1216 places, 1343 transitions, 3771 flow [2023-09-01 00:40:21,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1216 places, 1343 transitions, 3771 flow [2023-09-01 00:40:21,662 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:21,662 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1216 places, 1343 transitions, 3771 flow [2023-09-01 00:40:21,663 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1216 places, 1343 transitions, 3771 flow [2023-09-01 00:40:21,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1216 places, 1343 transitions, 3771 flow [2023-09-01 00:40:22,796 INFO L130 PetriNetUnfolder]: 314/2578 cut-off events. [2023-09-01 00:40:22,797 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-09-01 00:40:22,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3168 conditions, 2578 events. 314/2578 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 10706 event pairs, 0 based on Foata normal form. 0/1792 useless extension candidates. Maximal degree in co-relation 3027. Up to 64 conditions per place. [2023-09-01 00:40:23,377 INFO L119 LiptonReduction]: Number of co-enabled transitions 1626880 [2023-09-01 00:40:37,442 INFO L134 LiptonReduction]: Checked pairs total: 5259788 [2023-09-01 00:40:37,443 INFO L136 LiptonReduction]: Total number of compositions: 1012 [2023-09-01 00:40:37,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:37,444 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:37,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:37,761 INFO L130 PetriNetUnfolder]: 275/1358 cut-off events. [2023-09-01 00:40:37,761 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-09-01 00:40:37,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:37,761 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] [2023-09-01 00:40:37,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:37,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:37,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1924694669, now seen corresponding path program 1 times [2023-09-01 00:40:37,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:37,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791608314] [2023-09-01 00:40:37,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:37,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:37,816 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:37,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:37,891 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:37,891 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:37,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-09-01 00:40:37,891 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:37,892 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:37,892 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:37,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-09-01 00:40:37,973 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:40:37,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1253 places, 1384 transitions, 3920 flow [2023-09-01 00:40:39,129 INFO L130 PetriNetUnfolder]: 324/2659 cut-off events. [2023-09-01 00:40:39,129 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-09-01 00:40:39,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3284 conditions, 2659 events. 324/2659 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 11064 event pairs, 0 based on Foata normal form. 0/1848 useless extension candidates. Maximal degree in co-relation 3142. Up to 66 conditions per place. [2023-09-01 00:40:39,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 1253 places, 1384 transitions, 3920 flow [2023-09-01 00:40:39,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1253 places, 1384 transitions, 3920 flow [2023-09-01 00:40:39,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:39,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1253 places, 1384 transitions, 3920 flow [2023-09-01 00:40:39,375 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1253 places, 1384 transitions, 3920 flow [2023-09-01 00:40:39,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1253 places, 1384 transitions, 3920 flow [2023-09-01 00:40:40,532 INFO L130 PetriNetUnfolder]: 324/2659 cut-off events. [2023-09-01 00:40:40,532 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-09-01 00:40:40,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3284 conditions, 2659 events. 324/2659 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 11064 event pairs, 0 based on Foata normal form. 0/1848 useless extension candidates. Maximal degree in co-relation 3142. Up to 66 conditions per place. [2023-09-01 00:40:41,205 INFO L119 LiptonReduction]: Number of co-enabled transitions 1731840 [2023-09-01 00:40:55,811 INFO L134 LiptonReduction]: Checked pairs total: 5620777 [2023-09-01 00:40:55,812 INFO L136 LiptonReduction]: Total number of compositions: 1043 [2023-09-01 00:40:55,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:55,814 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:55,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:56,155 INFO L130 PetriNetUnfolder]: 284/1402 cut-off events. [2023-09-01 00:40:56,155 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-09-01 00:40:56,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:56,155 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] [2023-09-01 00:40:56,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:56,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:56,156 INFO L85 PathProgramCache]: Analyzing trace with hash 483377045, now seen corresponding path program 1 times [2023-09-01 00:40:56,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:56,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694613964] [2023-09-01 00:40:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:56,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:56,223 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:56,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:56,308 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:56,308 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:56,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-09-01 00:40:56,308 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:56,309 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:56,309 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:56,309 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-09-01 00:40:56,397 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:40:56,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1290 places, 1425 transitions, 4071 flow [2023-09-01 00:40:57,758 INFO L130 PetriNetUnfolder]: 334/2740 cut-off events. [2023-09-01 00:40:57,758 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-09-01 00:40:57,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3401 conditions, 2740 events. 334/2740 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 11335 event pairs, 0 based on Foata normal form. 0/1904 useless extension candidates. Maximal degree in co-relation 3258. Up to 68 conditions per place. [2023-09-01 00:40:57,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 1290 places, 1425 transitions, 4071 flow [2023-09-01 00:40:58,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1290 places, 1425 transitions, 4071 flow [2023-09-01 00:40:58,007 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:58,007 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1290 places, 1425 transitions, 4071 flow [2023-09-01 00:40:58,007 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1290 places, 1425 transitions, 4071 flow [2023-09-01 00:40:58,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1290 places, 1425 transitions, 4071 flow [2023-09-01 00:40:59,232 INFO L130 PetriNetUnfolder]: 334/2740 cut-off events. [2023-09-01 00:40:59,232 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-09-01 00:40:59,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3401 conditions, 2740 events. 334/2740 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 11335 event pairs, 0 based on Foata normal form. 0/1904 useless extension candidates. Maximal degree in co-relation 3258. Up to 68 conditions per place. [2023-09-01 00:40:59,991 INFO L119 LiptonReduction]: Number of co-enabled transitions 1840080 [2023-09-01 00:41:15,223 INFO L134 LiptonReduction]: Checked pairs total: 5960986 [2023-09-01 00:41:15,224 INFO L136 LiptonReduction]: Total number of compositions: 1080 [2023-09-01 00:41:15,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:41:15,225 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:41:15,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:41:15,587 INFO L130 PetriNetUnfolder]: 293/1446 cut-off events. [2023-09-01 00:41:15,587 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-09-01 00:41:15,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:41:15,587 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] [2023-09-01 00:41:15,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:41:15,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:41:15,588 INFO L85 PathProgramCache]: Analyzing trace with hash 164093778, now seen corresponding path program 1 times [2023-09-01 00:41:15,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:41:15,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356963512] [2023-09-01 00:41:15,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:41:15,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:41:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:15,635 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:41:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:15,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:41:15,712 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:41:15,713 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:41:15,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-09-01 00:41:15,713 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:41:15,713 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:41:15,713 WARN L233 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:41:15,714 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2023-09-01 00:41:15,809 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:41:15,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1327 places, 1466 transitions, 4224 flow [2023-09-01 00:41:17,274 INFO L130 PetriNetUnfolder]: 344/2821 cut-off events. [2023-09-01 00:41:17,274 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-09-01 00:41:17,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3519 conditions, 2821 events. 344/2821 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 11737 event pairs, 0 based on Foata normal form. 0/1960 useless extension candidates. Maximal degree in co-relation 3375. Up to 70 conditions per place. [2023-09-01 00:41:17,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 1327 places, 1466 transitions, 4224 flow [2023-09-01 00:41:17,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1327 places, 1466 transitions, 4224 flow [2023-09-01 00:41:17,461 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:41:17,462 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1327 places, 1466 transitions, 4224 flow [2023-09-01 00:41:17,462 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1327 places, 1466 transitions, 4224 flow [2023-09-01 00:41:17,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1327 places, 1466 transitions, 4224 flow [2023-09-01 00:41:18,721 INFO L130 PetriNetUnfolder]: 344/2821 cut-off events. [2023-09-01 00:41:18,722 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-09-01 00:41:18,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3519 conditions, 2821 events. 344/2821 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 11737 event pairs, 0 based on Foata normal form. 0/1960 useless extension candidates. Maximal degree in co-relation 3375. Up to 70 conditions per place. [2023-09-01 00:41:19,411 INFO L119 LiptonReduction]: Number of co-enabled transitions 1951600 [2023-09-01 00:41:35,121 INFO L134 LiptonReduction]: Checked pairs total: 7115834 [2023-09-01 00:41:35,121 INFO L136 LiptonReduction]: Total number of compositions: 1113 [2023-09-01 00:41:35,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:41:35,122 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:41:35,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:41:35,503 INFO L130 PetriNetUnfolder]: 302/1490 cut-off events. [2023-09-01 00:41:35,503 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-09-01 00:41:35,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:41:35,504 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] [2023-09-01 00:41:35,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:41:35,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:41:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash 148739904, now seen corresponding path program 1 times [2023-09-01 00:41:35,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:41:35,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175371680] [2023-09-01 00:41:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:41:35,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:41:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:35,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:41:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:35,645 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:41:35,645 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:41:35,645 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:41:35,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-09-01 00:41:35,646 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:41:35,646 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:41:35,646 WARN L233 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:41:35,646 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2023-09-01 00:41:35,740 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:41:35,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1364 places, 1507 transitions, 4379 flow [2023-09-01 00:41:37,137 INFO L130 PetriNetUnfolder]: 354/2902 cut-off events. [2023-09-01 00:41:37,137 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-09-01 00:41:37,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3638 conditions, 2902 events. 354/2902 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12045 event pairs, 0 based on Foata normal form. 0/2016 useless extension candidates. Maximal degree in co-relation 3493. Up to 72 conditions per place. [2023-09-01 00:41:37,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 1364 places, 1507 transitions, 4379 flow [2023-09-01 00:41:37,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1364 places, 1507 transitions, 4379 flow [2023-09-01 00:41:37,420 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:41:37,420 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1364 places, 1507 transitions, 4379 flow [2023-09-01 00:41:37,420 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1364 places, 1507 transitions, 4379 flow [2023-09-01 00:41:37,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1364 places, 1507 transitions, 4379 flow [2023-09-01 00:41:38,757 INFO L130 PetriNetUnfolder]: 354/2902 cut-off events. [2023-09-01 00:41:38,758 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-09-01 00:41:38,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3638 conditions, 2902 events. 354/2902 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12045 event pairs, 0 based on Foata normal form. 0/2016 useless extension candidates. Maximal degree in co-relation 3493. Up to 72 conditions per place. [2023-09-01 00:41:39,728 INFO L119 LiptonReduction]: Number of co-enabled transitions 2066400 [2023-09-01 00:41:56,109 INFO L134 LiptonReduction]: Checked pairs total: 7503727 [2023-09-01 00:41:56,109 INFO L136 LiptonReduction]: Total number of compositions: 1117 [2023-09-01 00:41:56,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:41:56,111 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:41:56,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:41:56,509 INFO L130 PetriNetUnfolder]: 311/1534 cut-off events. [2023-09-01 00:41:56,509 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-09-01 00:41:56,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:41:56,509 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] [2023-09-01 00:41:56,509 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:41:56,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:41:56,510 INFO L85 PathProgramCache]: Analyzing trace with hash 306569316, now seen corresponding path program 1 times [2023-09-01 00:41:56,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:41:56,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528303336] [2023-09-01 00:41:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:41:56,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:41:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:56,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:41:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:56,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:41:56,643 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:41:56,643 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:41:56,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-09-01 00:41:56,644 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:41:56,644 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:41:56,644 WARN L233 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:41:56,644 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2023-09-01 00:41:56,737 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:41:56,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1401 places, 1548 transitions, 4536 flow [2023-09-01 00:41:58,201 INFO L130 PetriNetUnfolder]: 364/2983 cut-off events. [2023-09-01 00:41:58,201 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-09-01 00:41:58,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3758 conditions, 2983 events. 364/2983 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12432 event pairs, 0 based on Foata normal form. 0/2072 useless extension candidates. Maximal degree in co-relation 3612. Up to 74 conditions per place. [2023-09-01 00:41:58,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 1401 places, 1548 transitions, 4536 flow [2023-09-01 00:41:58,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1401 places, 1548 transitions, 4536 flow [2023-09-01 00:41:58,474 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:41:58,474 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1401 places, 1548 transitions, 4536 flow [2023-09-01 00:41:58,475 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1401 places, 1548 transitions, 4536 flow [2023-09-01 00:41:58,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1401 places, 1548 transitions, 4536 flow [2023-09-01 00:42:00,018 INFO L130 PetriNetUnfolder]: 364/2983 cut-off events. [2023-09-01 00:42:00,018 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-09-01 00:42:00,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3758 conditions, 2983 events. 364/2983 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12432 event pairs, 0 based on Foata normal form. 0/2072 useless extension candidates. Maximal degree in co-relation 3612. Up to 74 conditions per place. [2023-09-01 00:42:00,754 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184480 [2023-09-01 00:42:17,099 INFO L134 LiptonReduction]: Checked pairs total: 7092273 [2023-09-01 00:42:17,100 INFO L136 LiptonReduction]: Total number of compositions: 1143 [2023-09-01 00:42:17,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:42:17,101 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:42:17,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:42:17,520 INFO L130 PetriNetUnfolder]: 320/1578 cut-off events. [2023-09-01 00:42:17,520 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-09-01 00:42:17,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:42:17,520 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] [2023-09-01 00:42:17,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:42:17,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:42:17,520 INFO L85 PathProgramCache]: Analyzing trace with hash 572111790, now seen corresponding path program 1 times [2023-09-01 00:42:17,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:42:17,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137159927] [2023-09-01 00:42:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:42:17,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:42:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:17,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:42:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:17,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:42:17,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:42:17,657 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:42:17,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-09-01 00:42:17,657 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:42:17,657 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:42:17,657 WARN L233 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:42:17,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2023-09-01 00:42:17,755 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:42:17,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1438 places, 1589 transitions, 4695 flow [2023-09-01 00:42:19,462 INFO L130 PetriNetUnfolder]: 374/3064 cut-off events. [2023-09-01 00:42:19,462 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-09-01 00:42:19,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 3064 events. 374/3064 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12677 event pairs, 0 based on Foata normal form. 0/2128 useless extension candidates. Maximal degree in co-relation 3732. Up to 76 conditions per place. [2023-09-01 00:42:19,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 1438 places, 1589 transitions, 4695 flow [2023-09-01 00:42:19,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1438 places, 1589 transitions, 4695 flow [2023-09-01 00:42:19,705 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:42:19,705 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1438 places, 1589 transitions, 4695 flow [2023-09-01 00:42:19,705 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1438 places, 1589 transitions, 4695 flow [2023-09-01 00:42:19,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1438 places, 1589 transitions, 4695 flow [2023-09-01 00:42:21,221 INFO L130 PetriNetUnfolder]: 374/3064 cut-off events. [2023-09-01 00:42:21,221 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-09-01 00:42:21,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 3064 events. 374/3064 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 12677 event pairs, 0 based on Foata normal form. 0/2128 useless extension candidates. Maximal degree in co-relation 3732. Up to 76 conditions per place. [2023-09-01 00:42:22,045 INFO L119 LiptonReduction]: Number of co-enabled transitions 2305840 [2023-09-01 00:42:38,575 INFO L134 LiptonReduction]: Checked pairs total: 7481851 [2023-09-01 00:42:38,575 INFO L136 LiptonReduction]: Total number of compositions: 1179 [2023-09-01 00:42:38,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:42:38,577 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:42:38,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:42:39,018 INFO L130 PetriNetUnfolder]: 329/1622 cut-off events. [2023-09-01 00:42:39,018 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-09-01 00:42:39,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:42:39,018 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] [2023-09-01 00:42:39,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:42:39,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:42:39,019 INFO L85 PathProgramCache]: Analyzing trace with hash -307808407, now seen corresponding path program 1 times [2023-09-01 00:42:39,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:42:39,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662376760] [2023-09-01 00:42:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:42:39,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:42:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:39,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:42:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:39,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:42:39,214 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:42:39,215 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:42:39,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-09-01 00:42:39,215 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:42:39,216 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:42:39,216 WARN L233 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:42:39,216 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2023-09-01 00:42:39,318 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:42:39,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1475 places, 1630 transitions, 4856 flow [2023-09-01 00:42:41,154 INFO L130 PetriNetUnfolder]: 384/3145 cut-off events. [2023-09-01 00:42:41,154 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-09-01 00:42:41,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 3145 events. 384/3145 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 13084 event pairs, 0 based on Foata normal form. 0/2184 useless extension candidates. Maximal degree in co-relation 3853. Up to 78 conditions per place. [2023-09-01 00:42:41,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 1475 places, 1630 transitions, 4856 flow [2023-09-01 00:42:41,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1475 places, 1630 transitions, 4856 flow [2023-09-01 00:42:41,386 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:42:41,386 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1475 places, 1630 transitions, 4856 flow [2023-09-01 00:42:41,386 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1475 places, 1630 transitions, 4856 flow [2023-09-01 00:42:41,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1475 places, 1630 transitions, 4856 flow [2023-09-01 00:42:43,111 INFO L130 PetriNetUnfolder]: 384/3145 cut-off events. [2023-09-01 00:42:43,111 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-09-01 00:42:43,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 3145 events. 384/3145 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 13084 event pairs, 0 based on Foata normal form. 0/2184 useless extension candidates. Maximal degree in co-relation 3853. Up to 78 conditions per place. [2023-09-01 00:42:43,954 INFO L119 LiptonReduction]: Number of co-enabled transitions 2430480 [2023-09-01 00:43:01,594 INFO L134 LiptonReduction]: Checked pairs total: 7910239 [2023-09-01 00:43:01,594 INFO L136 LiptonReduction]: Total number of compositions: 1213 [2023-09-01 00:43:01,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:01,596 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:01,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:02,068 INFO L130 PetriNetUnfolder]: 338/1666 cut-off events. [2023-09-01 00:43:02,068 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-09-01 00:43:02,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:02,068 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] [2023-09-01 00:43:02,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:02,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:02,069 INFO L85 PathProgramCache]: Analyzing trace with hash -78222262, now seen corresponding path program 1 times [2023-09-01 00:43:02,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:02,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069750597] [2023-09-01 00:43:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:02,127 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:02,229 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:02,229 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:02,229 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:02,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-09-01 00:43:02,230 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:02,230 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:02,230 WARN L233 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:02,230 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2023-09-01 00:43:02,331 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:43:02,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1512 places, 1671 transitions, 5019 flow [2023-09-01 00:43:04,047 INFO L130 PetriNetUnfolder]: 394/3226 cut-off events. [2023-09-01 00:43:04,047 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-09-01 00:43:04,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4124 conditions, 3226 events. 394/3226 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 13394 event pairs, 0 based on Foata normal form. 0/2240 useless extension candidates. Maximal degree in co-relation 3975. Up to 80 conditions per place. [2023-09-01 00:43:04,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 1512 places, 1671 transitions, 5019 flow [2023-09-01 00:43:04,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1512 places, 1671 transitions, 5019 flow [2023-09-01 00:43:04,410 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:04,410 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1512 places, 1671 transitions, 5019 flow [2023-09-01 00:43:04,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1512 places, 1671 transitions, 5019 flow [2023-09-01 00:43:04,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1512 places, 1671 transitions, 5019 flow [2023-09-01 00:43:06,100 INFO L130 PetriNetUnfolder]: 394/3226 cut-off events. [2023-09-01 00:43:06,100 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-09-01 00:43:06,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4124 conditions, 3226 events. 394/3226 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 13394 event pairs, 0 based on Foata normal form. 0/2240 useless extension candidates. Maximal degree in co-relation 3975. Up to 80 conditions per place. [2023-09-01 00:43:07,067 INFO L119 LiptonReduction]: Number of co-enabled transitions 2558400 [2023-09-01 00:43:24,972 INFO L134 LiptonReduction]: Checked pairs total: 8326660 [2023-09-01 00:43:24,972 INFO L136 LiptonReduction]: Total number of compositions: 1260 [2023-09-01 00:43:24,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:24,974 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:24,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:25,466 INFO L130 PetriNetUnfolder]: 347/1710 cut-off events. [2023-09-01 00:43:25,467 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-09-01 00:43:25,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:25,467 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] [2023-09-01 00:43:25,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:25,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:25,467 INFO L85 PathProgramCache]: Analyzing trace with hash -993947739, now seen corresponding path program 1 times [2023-09-01 00:43:25,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:25,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702416993] [2023-09-01 00:43:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:25,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:25,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:25,621 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:25,621 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:25,622 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:25,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-09-01 00:43:25,622 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:25,622 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:25,622 WARN L233 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:25,622 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2023-09-01 00:43:25,723 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:43:25,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1549 places, 1712 transitions, 5184 flow [2023-09-01 00:43:27,556 INFO L130 PetriNetUnfolder]: 404/3307 cut-off events. [2023-09-01 00:43:27,557 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-09-01 00:43:27,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4248 conditions, 3307 events. 404/3307 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 13782 event pairs, 0 based on Foata normal form. 0/2296 useless extension candidates. Maximal degree in co-relation 4098. Up to 82 conditions per place. [2023-09-01 00:43:27,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 1549 places, 1712 transitions, 5184 flow [2023-09-01 00:43:27,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1549 places, 1712 transitions, 5184 flow [2023-09-01 00:43:27,946 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:27,946 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1549 places, 1712 transitions, 5184 flow [2023-09-01 00:43:27,946 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1549 places, 1712 transitions, 5184 flow [2023-09-01 00:43:27,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1549 places, 1712 transitions, 5184 flow [2023-09-01 00:43:29,703 INFO L130 PetriNetUnfolder]: 404/3307 cut-off events. [2023-09-01 00:43:29,704 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-09-01 00:43:29,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4248 conditions, 3307 events. 404/3307 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 13782 event pairs, 0 based on Foata normal form. 0/2296 useless extension candidates. Maximal degree in co-relation 4098. Up to 82 conditions per place. [2023-09-01 00:43:30,775 INFO L119 LiptonReduction]: Number of co-enabled transitions 2689600 [2023-09-01 00:43:49,369 INFO L134 LiptonReduction]: Checked pairs total: 8759385 [2023-09-01 00:43:49,369 INFO L136 LiptonReduction]: Total number of compositions: 1259 [2023-09-01 00:43:49,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:49,371 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:49,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:50,011 INFO L130 PetriNetUnfolder]: 356/1754 cut-off events. [2023-09-01 00:43:50,011 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-09-01 00:43:50,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:50,011 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] [2023-09-01 00:43:50,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:50,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash -822882510, now seen corresponding path program 1 times [2023-09-01 00:43:50,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:50,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604738430] [2023-09-01 00:43:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:50,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:50,081 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:50,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:50,276 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:50,277 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:50,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-09-01 00:43:50,277 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:50,277 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:50,277 WARN L233 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:50,277 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2023-09-01 00:43:50,382 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:43:50,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1586 places, 1753 transitions, 5351 flow [2023-09-01 00:43:53,362 INFO L130 PetriNetUnfolder]: 414/3388 cut-off events. [2023-09-01 00:43:53,389 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-09-01 00:43:53,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4373 conditions, 3388 events. 414/3388 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14098 event pairs, 0 based on Foata normal form. 0/2352 useless extension candidates. Maximal degree in co-relation 4222. Up to 84 conditions per place. [2023-09-01 00:43:53,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 1586 places, 1753 transitions, 5351 flow [2023-09-01 00:43:53,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1586 places, 1753 transitions, 5351 flow [2023-09-01 00:43:53,834 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:53,834 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1586 places, 1753 transitions, 5351 flow [2023-09-01 00:43:53,834 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1586 places, 1753 transitions, 5351 flow [2023-09-01 00:43:53,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1586 places, 1753 transitions, 5351 flow [2023-09-01 00:43:56,272 INFO L130 PetriNetUnfolder]: 414/3388 cut-off events. [2023-09-01 00:43:56,272 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-09-01 00:43:56,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4373 conditions, 3388 events. 414/3388 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14098 event pairs, 0 based on Foata normal form. 0/2352 useless extension candidates. Maximal degree in co-relation 4222. Up to 84 conditions per place. [2023-09-01 00:43:57,320 INFO L119 LiptonReduction]: Number of co-enabled transitions 2824080 [2023-09-01 00:44:16,834 INFO L134 LiptonReduction]: Checked pairs total: 9212192 [2023-09-01 00:44:16,835 INFO L136 LiptonReduction]: Total number of compositions: 1310 [2023-09-01 00:44:16,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:44:16,837 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:44:16,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:44:17,459 INFO L130 PetriNetUnfolder]: 365/1798 cut-off events. [2023-09-01 00:44:17,459 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-09-01 00:44:17,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:17,459 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] [2023-09-01 00:44:17,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:44:17,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:17,459 INFO L85 PathProgramCache]: Analyzing trace with hash 694852983, now seen corresponding path program 1 times [2023-09-01 00:44:17,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:44:17,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217578598] [2023-09-01 00:44:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:17,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:44:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:17,514 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:44:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:17,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:44:17,628 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:44:17,628 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:44:17,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-09-01 00:44:17,628 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:44:17,629 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:44:17,629 WARN L233 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:44:17,629 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2023-09-01 00:44:17,742 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:44:17,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1623 places, 1794 transitions, 5520 flow [2023-09-01 00:44:20,081 INFO L130 PetriNetUnfolder]: 424/3469 cut-off events. [2023-09-01 00:44:20,082 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-09-01 00:44:20,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4499 conditions, 3469 events. 424/3469 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14293 event pairs, 0 based on Foata normal form. 0/2408 useless extension candidates. Maximal degree in co-relation 4347. Up to 86 conditions per place. [2023-09-01 00:44:20,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 1623 places, 1794 transitions, 5520 flow [2023-09-01 00:44:20,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1623 places, 1794 transitions, 5520 flow [2023-09-01 00:44:20,370 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:44:20,370 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1623 places, 1794 transitions, 5520 flow [2023-09-01 00:44:20,371 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1623 places, 1794 transitions, 5520 flow [2023-09-01 00:44:20,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1623 places, 1794 transitions, 5520 flow [2023-09-01 00:44:22,682 INFO L130 PetriNetUnfolder]: 424/3469 cut-off events. [2023-09-01 00:44:22,682 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-09-01 00:44:22,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4499 conditions, 3469 events. 424/3469 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14293 event pairs, 0 based on Foata normal form. 0/2408 useless extension candidates. Maximal degree in co-relation 4347. Up to 86 conditions per place. [2023-09-01 00:44:23,818 INFO L119 LiptonReduction]: Number of co-enabled transitions 2961840 [2023-09-01 00:44:44,281 INFO L134 LiptonReduction]: Checked pairs total: 9598281 [2023-09-01 00:44:44,281 INFO L136 LiptonReduction]: Total number of compositions: 1351 [2023-09-01 00:44:44,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:44:44,282 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:44:44,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:44:45,004 INFO L130 PetriNetUnfolder]: 374/1842 cut-off events. [2023-09-01 00:44:45,004 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-09-01 00:44:45,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:45,005 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] [2023-09-01 00:44:45,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:44:45,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash 975336419, now seen corresponding path program 1 times [2023-09-01 00:44:45,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:44:45,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412932516] [2023-09-01 00:44:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:45,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:44:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:45,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:44:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:45,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:44:45,174 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:44:45,174 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:44:45,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-09-01 00:44:45,175 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:44:45,175 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:44:45,175 WARN L233 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:44:45,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2023-09-01 00:44:45,269 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:44:45,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1660 places, 1835 transitions, 5691 flow [2023-09-01 00:44:47,825 INFO L130 PetriNetUnfolder]: 434/3550 cut-off events. [2023-09-01 00:44:47,826 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-09-01 00:44:48,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 3550 events. 434/3550 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14603 event pairs, 0 based on Foata normal form. 0/2464 useless extension candidates. Maximal degree in co-relation 4473. Up to 88 conditions per place. [2023-09-01 00:44:48,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 1660 places, 1835 transitions, 5691 flow [2023-09-01 00:44:48,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1660 places, 1835 transitions, 5691 flow [2023-09-01 00:44:48,127 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:44:48,127 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1660 places, 1835 transitions, 5691 flow [2023-09-01 00:44:48,127 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1660 places, 1835 transitions, 5691 flow [2023-09-01 00:44:48,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1660 places, 1835 transitions, 5691 flow [2023-09-01 00:44:50,400 INFO L130 PetriNetUnfolder]: 434/3550 cut-off events. [2023-09-01 00:44:50,401 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-09-01 00:44:50,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 3550 events. 434/3550 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14603 event pairs, 0 based on Foata normal form. 0/2464 useless extension candidates. Maximal degree in co-relation 4473. Up to 88 conditions per place. [2023-09-01 00:44:51,737 INFO L119 LiptonReduction]: Number of co-enabled transitions 3102880 [2023-09-01 00:45:12,303 INFO L134 LiptonReduction]: Checked pairs total: 10003352 [2023-09-01 00:45:12,303 INFO L136 LiptonReduction]: Total number of compositions: 1360 [2023-09-01 00:45:12,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:12,305 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:12,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:12,961 INFO L130 PetriNetUnfolder]: 383/1886 cut-off events. [2023-09-01 00:45:12,961 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-09-01 00:45:12,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:12,961 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] [2023-09-01 00:45:12,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:12,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash -918282430, now seen corresponding path program 1 times [2023-09-01 00:45:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3896845] [2023-09-01 00:45:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:12,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:13,023 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:13,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:13,142 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:13,142 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:13,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-09-01 00:45:13,143 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:13,143 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:13,143 WARN L233 ceAbstractionStarter]: 43 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:13,143 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 44 thread instances. [2023-09-01 00:45:13,246 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:45:13,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1697 places, 1876 transitions, 5864 flow [2023-09-01 00:45:15,914 INFO L130 PetriNetUnfolder]: 444/3631 cut-off events. [2023-09-01 00:45:15,914 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-09-01 00:45:16,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4754 conditions, 3631 events. 444/3631 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14995 event pairs, 0 based on Foata normal form. 0/2520 useless extension candidates. Maximal degree in co-relation 4600. Up to 90 conditions per place. [2023-09-01 00:45:16,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 1697 places, 1876 transitions, 5864 flow [2023-09-01 00:45:16,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1697 places, 1876 transitions, 5864 flow [2023-09-01 00:45:16,247 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:16,247 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1697 places, 1876 transitions, 5864 flow [2023-09-01 00:45:16,247 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1697 places, 1876 transitions, 5864 flow [2023-09-01 00:45:16,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1697 places, 1876 transitions, 5864 flow [2023-09-01 00:45:18,834 INFO L130 PetriNetUnfolder]: 444/3631 cut-off events. [2023-09-01 00:45:18,835 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-09-01 00:45:19,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4754 conditions, 3631 events. 444/3631 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 14995 event pairs, 0 based on Foata normal form. 0/2520 useless extension candidates. Maximal degree in co-relation 4600. Up to 90 conditions per place. [2023-09-01 00:45:20,041 INFO L119 LiptonReduction]: Number of co-enabled transitions 3247200 [2023-09-01 00:45:41,710 INFO L134 LiptonReduction]: Checked pairs total: 11857459 [2023-09-01 00:45:41,710 INFO L136 LiptonReduction]: Total number of compositions: 1411 [2023-09-01 00:45:41,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:41,712 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:41,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:42,517 INFO L130 PetriNetUnfolder]: 392/1930 cut-off events. [2023-09-01 00:45:42,517 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-09-01 00:45:42,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:42,518 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] [2023-09-01 00:45:42,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:42,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:42,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1918606286, now seen corresponding path program 1 times [2023-09-01 00:45:42,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:42,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724758115] [2023-09-01 00:45:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:42,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:42,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:42,728 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:42,729 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:42,729 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:42,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-09-01 00:45:42,729 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:42,730 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:42,730 WARN L233 ceAbstractionStarter]: 44 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:42,730 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 45 thread instances. [2023-09-01 00:45:42,857 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:45:42,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1734 places, 1917 transitions, 6039 flow [2023-09-01 00:45:45,729 INFO L130 PetriNetUnfolder]: 454/3712 cut-off events. [2023-09-01 00:45:45,729 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-09-01 00:45:46,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4883 conditions, 3712 events. 454/3712 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 15300 event pairs, 0 based on Foata normal form. 0/2576 useless extension candidates. Maximal degree in co-relation 4728. Up to 92 conditions per place. [2023-09-01 00:45:46,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 1734 places, 1917 transitions, 6039 flow [2023-09-01 00:45:46,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1734 places, 1917 transitions, 6039 flow [2023-09-01 00:45:46,075 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:46,075 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1734 places, 1917 transitions, 6039 flow [2023-09-01 00:45:46,075 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1734 places, 1917 transitions, 6039 flow [2023-09-01 00:45:46,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1734 places, 1917 transitions, 6039 flow [2023-09-01 00:45:49,801 INFO L130 PetriNetUnfolder]: 454/3712 cut-off events. [2023-09-01 00:45:49,802 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-09-01 00:45:50,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4883 conditions, 3712 events. 454/3712 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 15300 event pairs, 0 based on Foata normal form. 0/2576 useless extension candidates. Maximal degree in co-relation 4728. Up to 92 conditions per place. [2023-09-01 00:45:51,164 INFO L119 LiptonReduction]: Number of co-enabled transitions 3394800 [2023-09-01 00:46:13,436 INFO L134 LiptonReduction]: Checked pairs total: 10929790 [2023-09-01 00:46:13,436 INFO L136 LiptonReduction]: Total number of compositions: 1410 [2023-09-01 00:46:13,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:46:13,438 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:46:13,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:46:14,286 INFO L130 PetriNetUnfolder]: 401/1974 cut-off events. [2023-09-01 00:46:14,286 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-09-01 00:46:14,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:46:14,286 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] [2023-09-01 00:46:14,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:46:14,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:46:14,287 INFO L85 PathProgramCache]: Analyzing trace with hash 956882944, now seen corresponding path program 1 times [2023-09-01 00:46:14,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:46:14,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97878151] [2023-09-01 00:46:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:46:14,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:46:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:46:14,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:46:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:46:14,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:46:14,447 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:46:14,447 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:46:14,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-09-01 00:46:14,448 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:46:14,448 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:46:14,448 WARN L233 ceAbstractionStarter]: 45 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:46:14,448 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 46 thread instances. [2023-09-01 00:46:14,585 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:46:14,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1771 places, 1958 transitions, 6216 flow [2023-09-01 00:46:17,384 INFO L130 PetriNetUnfolder]: 464/3793 cut-off events. [2023-09-01 00:46:17,384 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-09-01 00:46:17,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5013 conditions, 3793 events. 464/3793 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 15708 event pairs, 0 based on Foata normal form. 0/2632 useless extension candidates. Maximal degree in co-relation 4857. Up to 94 conditions per place. [2023-09-01 00:46:17,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 1771 places, 1958 transitions, 6216 flow [2023-09-01 00:46:17,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1771 places, 1958 transitions, 6216 flow [2023-09-01 00:46:17,748 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:46:17,748 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1771 places, 1958 transitions, 6216 flow [2023-09-01 00:46:17,748 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1771 places, 1958 transitions, 6216 flow [2023-09-01 00:46:17,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1771 places, 1958 transitions, 6216 flow [2023-09-01 00:46:20,542 INFO L130 PetriNetUnfolder]: 464/3793 cut-off events. [2023-09-01 00:46:20,542 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-09-01 00:46:20,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5013 conditions, 3793 events. 464/3793 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 15708 event pairs, 0 based on Foata normal form. 0/2632 useless extension candidates. Maximal degree in co-relation 4857. Up to 94 conditions per place. [2023-09-01 00:46:21,917 INFO L119 LiptonReduction]: Number of co-enabled transitions 3545680 [2023-09-01 00:46:44,447 INFO L134 LiptonReduction]: Checked pairs total: 11430507 [2023-09-01 00:46:44,447 INFO L136 LiptonReduction]: Total number of compositions: 1441 [2023-09-01 00:46:44,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:46:44,448 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:46:44,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:46:45,273 INFO L130 PetriNetUnfolder]: 410/2018 cut-off events. [2023-09-01 00:46:45,274 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-09-01 00:46:45,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:46:45,274 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] [2023-09-01 00:46:45,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:46:45,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:46:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2035554899, now seen corresponding path program 1 times [2023-09-01 00:46:45,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:46:45,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972241425] [2023-09-01 00:46:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:46:45,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:46:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:46:45,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:46:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:46:45,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:46:45,433 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:46:45,433 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:46:45,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-09-01 00:46:45,433 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:46:45,433 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:46:45,434 WARN L233 ceAbstractionStarter]: 46 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:46:45,434 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 47 thread instances. [2023-09-01 00:46:45,539 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:46:45,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1808 places, 1999 transitions, 6395 flow [2023-09-01 00:46:48,444 INFO L130 PetriNetUnfolder]: 474/3874 cut-off events. [2023-09-01 00:46:48,444 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-09-01 00:46:48,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5144 conditions, 3874 events. 474/3874 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 16080 event pairs, 0 based on Foata normal form. 0/2688 useless extension candidates. Maximal degree in co-relation 4987. Up to 96 conditions per place. [2023-09-01 00:46:48,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 1808 places, 1999 transitions, 6395 flow [2023-09-01 00:46:48,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1808 places, 1999 transitions, 6395 flow [2023-09-01 00:46:48,821 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:46:48,821 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1808 places, 1999 transitions, 6395 flow [2023-09-01 00:46:48,821 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1808 places, 1999 transitions, 6395 flow [2023-09-01 00:46:48,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1808 places, 1999 transitions, 6395 flow [2023-09-01 00:46:51,679 INFO L130 PetriNetUnfolder]: 474/3874 cut-off events. [2023-09-01 00:46:51,679 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-09-01 00:46:52,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5144 conditions, 3874 events. 474/3874 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 16080 event pairs, 0 based on Foata normal form. 0/2688 useless extension candidates. Maximal degree in co-relation 4987. Up to 96 conditions per place. [2023-09-01 00:46:53,311 INFO L119 LiptonReduction]: Number of co-enabled transitions 3699840 [2023-09-01 00:47:16,292 INFO L134 LiptonReduction]: Checked pairs total: 12016470 [2023-09-01 00:47:16,292 INFO L136 LiptonReduction]: Total number of compositions: 1451 [2023-09-01 00:47:16,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:47:16,293 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;@2ebdedaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:47:16,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:47:17,105 INFO L130 PetriNetUnfolder]: 419/2062 cut-off events. [2023-09-01 00:47:17,105 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-09-01 00:47:17,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:47:17,105 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] [2023-09-01 00:47:17,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:47:17,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:47:17,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1001159523, now seen corresponding path program 1 times [2023-09-01 00:47:17,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:47:17,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045850154] [2023-09-01 00:47:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:47:17,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:47:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:47:17,215 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:47:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:47:17,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:47:17,302 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:47:17,302 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:47:17,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-09-01 00:47:17,302 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:47:17,303 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:47:17,303 WARN L233 ceAbstractionStarter]: 47 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:47:17,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 48 thread instances. [2023-09-01 00:47:17,419 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:47:17,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1845 places, 2040 transitions, 6576 flow [2023-09-01 00:47:20,427 INFO L130 PetriNetUnfolder]: 484/3955 cut-off events. [2023-09-01 00:47:20,427 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-09-01 00:47:20,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5276 conditions, 3955 events. 484/3955 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 16333 event pairs, 0 based on Foata normal form. 0/2744 useless extension candidates. Maximal degree in co-relation 5118. Up to 98 conditions per place. [2023-09-01 00:47:20,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 1845 places, 2040 transitions, 6576 flow [2023-09-01 00:47:20,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1845 places, 2040 transitions, 6576 flow [2023-09-01 00:47:20,829 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:47:20,829 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1845 places, 2040 transitions, 6576 flow [2023-09-01 00:47:20,829 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1845 places, 2040 transitions, 6576 flow [2023-09-01 00:47:20,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1845 places, 2040 transitions, 6576 flow [2023-09-01 00:47:24,006 INFO L130 PetriNetUnfolder]: 484/3955 cut-off events. [2023-09-01 00:47:24,006 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-09-01 00:47:24,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5276 conditions, 3955 events. 484/3955 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 16333 event pairs, 0 based on Foata normal form. 0/2744 useless extension candidates. Maximal degree in co-relation 5118. Up to 98 conditions per place. [2023-09-01 00:47:25,463 INFO L119 LiptonReduction]: Number of co-enabled transitions 3857280 Killed by 15