./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --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 11:03:37,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:03:37,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:03:37,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:03:37,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:03:37,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:03:37,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:03:37,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:03:37,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:03:37,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:03:37,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:03:37,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:03:37,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:03:37,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:03:37,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:03:37,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:03:37,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:03:37,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:03:37,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:03:37,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:03:37,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:03:37,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:03:37,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:03:37,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:03:37,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:03:37,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:03:37,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:03:37,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:03:37,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:03:37,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:03:37,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:03:37,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:03:37,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:03:37,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:03:37,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:03:37,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:03:37,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:03:37,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:03:37,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:03:37,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:03:37,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:03:37,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:03:37,843 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:03:37,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:03:37,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:03:37,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:03:37,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:03:37,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:03:37,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:03:37,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:03:37,845 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:03:37,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:03:37,846 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:03:37,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:03:37,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:03:37,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:03:37,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:03:37,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:03:37,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:03:37,847 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:03:37,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:03:37,848 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:03:37,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:03:37,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:03:37,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:03:37,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:03:37,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:03:37,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:03:37,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:03:37,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:03:37,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:03:37,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:03:37,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:03:37,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:03:37,850 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:03:37,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:03:37,851 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:03:37,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:03:38,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:03:38,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:03:38,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:03:38,168 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:03:38,168 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:03:38,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-09-01 11:03:39,379 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:03:39,677 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:03:39,678 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-09-01 11:03:39,689 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/341e2cce5/b7cfeae92e664b7989c42fcc1691a174/FLAGf2bad5e41 [2023-09-01 11:03:39,704 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/341e2cce5/b7cfeae92e664b7989c42fcc1691a174 [2023-09-01 11:03:39,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:03:39,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:03:39,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:03:39,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:03:39,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:03:39,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:03:39" (1/1) ... [2023-09-01 11:03:39,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91ab2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:39, skipping insertion in model container [2023-09-01 11:03:39,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:03:39" (1/1) ... [2023-09-01 11:03:39,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:03:39,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:03:40,022 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_42-trylock2_racefree.i[30176,30189] [2023-09-01 11:03:40,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:03:40,077 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:03:40,161 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_42-trylock2_racefree.i[30176,30189] [2023-09-01 11:03:40,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:03:40,225 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:03:40,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40 WrapperNode [2023-09-01 11:03:40,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:03:40,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:03:40,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:03:40,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:03:40,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40" (1/1) ... [2023-09-01 11:03:40,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40" (1/1) ... [2023-09-01 11:03:40,275 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 130 [2023-09-01 11:03:40,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:03:40,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:03:40,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:03:40,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:03:40,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40" (1/1) ... [2023-09-01 11:03:40,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40" (1/1) ... [2023-09-01 11:03:40,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40" (1/1) ... [2023-09-01 11:03:40,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40" (1/1) ... [2023-09-01 11:03:40,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40" (1/1) ... [2023-09-01 11:03:40,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40" (1/1) ... [2023-09-01 11:03:40,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40" (1/1) ... [2023-09-01 11:03:40,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40" (1/1) ... [2023-09-01 11:03:40,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:03:40,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:03:40,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:03:40,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:03:40,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40" (1/1) ... [2023-09-01 11:03:40,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:03:40,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:03:40,358 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 11:03:40,380 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 11:03:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:03:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:03:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:03:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:03:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:03:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 11:03:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 11:03:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:03:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-09-01 11:03:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:03:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:03:40,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:03:40,395 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 11:03:40,541 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:03:40,543 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:03:40,851 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:03:40,858 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:03:40,861 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-09-01 11:03:40,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:03:40 BoogieIcfgContainer [2023-09-01 11:03:40,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:03:40,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:03:40,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:03:40,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:03:40,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:03:39" (1/3) ... [2023-09-01 11:03:40,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d04bc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:03:40, skipping insertion in model container [2023-09-01 11:03:40,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:03:40" (2/3) ... [2023-09-01 11:03:40,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d04bc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:03:40, skipping insertion in model container [2023-09-01 11:03:40,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:03:40" (3/3) ... [2023-09-01 11:03:40,872 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2023-09-01 11:03:40,879 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:03:40,886 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:03:40,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-09-01 11:03:40,887 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:03:40,968 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 11:03:41,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 184 transitions, 376 flow [2023-09-01 11:03:41,130 INFO L130 PetriNetUnfolder]: 45/269 cut-off events. [2023-09-01 11:03:41,130 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 11:03:41,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 269 events. 45/269 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1001 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2023-09-01 11:03:41,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 184 transitions, 376 flow [2023-09-01 11:03:41,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 179 transitions, 363 flow [2023-09-01 11:03:41,150 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:03:41,161 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 179 transitions, 363 flow [2023-09-01 11:03:41,165 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 179 transitions, 363 flow [2023-09-01 11:03:41,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 179 transitions, 363 flow [2023-09-01 11:03:41,211 INFO L130 PetriNetUnfolder]: 44/264 cut-off events. [2023-09-01 11:03:41,212 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:03:41,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 264 events. 44/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 985 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2023-09-01 11:03:41,222 INFO L119 LiptonReduction]: Number of co-enabled transitions 9646 [2023-09-01 11:03:44,361 INFO L134 LiptonReduction]: Checked pairs total: 21000 [2023-09-01 11:03:44,361 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-09-01 11:03:44,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:03:44,376 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1f240df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:03:44,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:03:44,381 INFO L130 PetriNetUnfolder]: 6/37 cut-off events. [2023-09-01 11:03:44,381 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:03:44,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:03:44,382 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 11:03:44,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:03:44,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:03:44,387 INFO L85 PathProgramCache]: Analyzing trace with hash -560655468, now seen corresponding path program 1 times [2023-09-01 11:03:44,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:03:44,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161210750] [2023-09-01 11:03:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:03:44,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:03:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:44,525 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:03:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:44,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:03:44,600 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:03:44,601 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:03:44,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:03:44,602 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:03:44,605 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:03:44,606 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:03:44,606 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 11:03:44,634 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 11:03:44,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 239 transitions, 496 flow [2023-09-01 11:03:44,691 INFO L130 PetriNetUnfolder]: 76/433 cut-off events. [2023-09-01 11:03:44,691 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:03:44,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 433 events. 76/433 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1832 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 271. Up to 9 conditions per place. [2023-09-01 11:03:44,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 239 transitions, 496 flow [2023-09-01 11:03:44,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 239 transitions, 496 flow [2023-09-01 11:03:44,698 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:03:44,698 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 239 transitions, 496 flow [2023-09-01 11:03:44,699 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 239 transitions, 496 flow [2023-09-01 11:03:44,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 239 transitions, 496 flow [2023-09-01 11:03:44,739 INFO L130 PetriNetUnfolder]: 76/433 cut-off events. [2023-09-01 11:03:44,740 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:03:44,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 433 events. 76/433 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1832 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 271. Up to 9 conditions per place. [2023-09-01 11:03:44,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 26076 [2023-09-01 11:03:47,766 INFO L134 LiptonReduction]: Checked pairs total: 81736 [2023-09-01 11:03:47,766 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-09-01 11:03:47,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:03:47,770 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1f240df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:03:47,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:03:47,779 INFO L130 PetriNetUnfolder]: 29/120 cut-off events. [2023-09-01 11:03:47,779 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 11:03:47,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:03:47,782 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 11:03:47,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:03:47,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:03:47,783 INFO L85 PathProgramCache]: Analyzing trace with hash -778084677, now seen corresponding path program 1 times [2023-09-01 11:03:47,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:03:47,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56398516] [2023-09-01 11:03:47,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:03:47,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:03:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:47,806 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:03:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:47,825 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:03:47,825 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:03:47,825 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:03:47,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:03:47,826 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:03:47,826 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:03:47,826 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:03:47,826 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 11:03:47,847 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 11:03:47,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 294 transitions, 618 flow [2023-09-01 11:03:47,918 INFO L130 PetriNetUnfolder]: 112/628 cut-off events. [2023-09-01 11:03:47,919 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:03:47,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 628 events. 112/628 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2789 event pairs, 1 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 441. Up to 16 conditions per place. [2023-09-01 11:03:47,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 294 transitions, 618 flow [2023-09-01 11:03:47,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 294 transitions, 618 flow [2023-09-01 11:03:47,938 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:03:47,938 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 294 transitions, 618 flow [2023-09-01 11:03:47,939 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 294 transitions, 618 flow [2023-09-01 11:03:47,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 294 transitions, 618 flow [2023-09-01 11:03:48,013 INFO L130 PetriNetUnfolder]: 112/628 cut-off events. [2023-09-01 11:03:48,015 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:03:48,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 628 events. 112/628 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2789 event pairs, 1 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 441. Up to 16 conditions per place. [2023-09-01 11:03:48,043 INFO L119 LiptonReduction]: Number of co-enabled transitions 48018 [2023-09-01 11:03:51,122 INFO L134 LiptonReduction]: Checked pairs total: 140868 [2023-09-01 11:03:51,122 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-09-01 11:03:51,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:03:51,125 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1f240df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:03:51,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:03:51,138 INFO L130 PetriNetUnfolder]: 50/186 cut-off events. [2023-09-01 11:03:51,138 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 11:03:51,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:03:51,138 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 11:03:51,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:03:51,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:03:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2086760866, now seen corresponding path program 1 times [2023-09-01 11:03:51,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:03:51,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224353505] [2023-09-01 11:03:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:03:51,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:03:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:51,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:03:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:51,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:03:51,183 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:03:51,183 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:03:51,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:03:51,184 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:03:51,185 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:03:51,185 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:03:51,185 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 11:03:51,208 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 11:03:51,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 349 transitions, 742 flow [2023-09-01 11:03:51,350 INFO L130 PetriNetUnfolder]: 160/887 cut-off events. [2023-09-01 11:03:51,351 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:03:51,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 887 events. 160/887 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4176 event pairs, 6 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 648. Up to 32 conditions per place. [2023-09-01 11:03:51,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 349 transitions, 742 flow [2023-09-01 11:03:51,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 349 transitions, 742 flow [2023-09-01 11:03:51,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:03:51,376 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 349 transitions, 742 flow [2023-09-01 11:03:51,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 349 transitions, 742 flow [2023-09-01 11:03:51,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 349 transitions, 742 flow [2023-09-01 11:03:51,510 INFO L130 PetriNetUnfolder]: 160/887 cut-off events. [2023-09-01 11:03:51,510 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:03:51,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 887 events. 160/887 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4176 event pairs, 6 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 648. Up to 32 conditions per place. [2023-09-01 11:03:51,558 INFO L119 LiptonReduction]: Number of co-enabled transitions 75896 [2023-09-01 11:03:54,913 INFO L134 LiptonReduction]: Checked pairs total: 259511 [2023-09-01 11:03:54,913 INFO L136 LiptonReduction]: Total number of compositions: 213 [2023-09-01 11:03:54,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:03:54,917 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1f240df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:03:54,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:03:54,939 INFO L130 PetriNetUnfolder]: 70/251 cut-off events. [2023-09-01 11:03:54,939 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:03:54,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:03:54,939 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 11:03:54,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:03:54,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:03:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1692529136, now seen corresponding path program 1 times [2023-09-01 11:03:54,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:03:54,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035538967] [2023-09-01 11:03:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:03:54,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:03:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:54,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:03:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:54,984 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:03:54,984 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:03:54,984 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:03:54,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 11:03:54,985 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:03:54,986 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:03:54,986 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:03:54,986 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 11:03:55,014 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 11:03:55,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 404 transitions, 868 flow [2023-09-01 11:03:55,259 INFO L130 PetriNetUnfolder]: 236/1278 cut-off events. [2023-09-01 11:03:55,259 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:03:55,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 1278 events. 236/1278 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6522 event pairs, 23 based on Foata normal form. 0/1034 useless extension candidates. Maximal degree in co-relation 932. Up to 80 conditions per place. [2023-09-01 11:03:55,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 404 transitions, 868 flow [2023-09-01 11:03:55,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 404 transitions, 868 flow [2023-09-01 11:03:55,293 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:03:55,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 404 transitions, 868 flow [2023-09-01 11:03:55,294 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 404 transitions, 868 flow [2023-09-01 11:03:55,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 404 transitions, 868 flow [2023-09-01 11:03:55,507 INFO L130 PetriNetUnfolder]: 236/1278 cut-off events. [2023-09-01 11:03:55,508 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:03:55,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 1278 events. 236/1278 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6522 event pairs, 23 based on Foata normal form. 0/1034 useless extension candidates. Maximal degree in co-relation 932. Up to 80 conditions per place. [2023-09-01 11:03:55,592 INFO L119 LiptonReduction]: Number of co-enabled transitions 109710 [2023-09-01 11:03:58,885 INFO L134 LiptonReduction]: Checked pairs total: 345373 [2023-09-01 11:03:58,885 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-09-01 11:03:58,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:03:58,887 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1f240df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:03:58,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:03:58,922 INFO L130 PetriNetUnfolder]: 98/345 cut-off events. [2023-09-01 11:03:58,923 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-09-01 11:03:58,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:03:58,924 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:03:58,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:03:58,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:03:58,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1093551123, now seen corresponding path program 1 times [2023-09-01 11:03:58,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:03:58,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847388768] [2023-09-01 11:03:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:03:58,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:03:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:58,978 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:03:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:59,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:03:59,014 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:03:59,014 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:03:59,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 11:03:59,016 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:03:59,017 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:03:59,019 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:03:59,020 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 11:03:59,058 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 11:03:59,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 459 transitions, 996 flow [2023-09-01 11:03:59,480 INFO L130 PetriNetUnfolder]: 376/1941 cut-off events. [2023-09-01 11:03:59,483 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:03:59,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 1941 events. 376/1941 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11116 event pairs, 72 based on Foata normal form. 0/1601 useless extension candidates. Maximal degree in co-relation 1377. Up to 192 conditions per place. [2023-09-01 11:03:59,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 459 transitions, 996 flow [2023-09-01 11:03:59,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 459 transitions, 996 flow [2023-09-01 11:03:59,542 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:03:59,542 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 378 places, 459 transitions, 996 flow [2023-09-01 11:03:59,542 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 378 places, 459 transitions, 996 flow [2023-09-01 11:03:59,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 459 transitions, 996 flow [2023-09-01 11:03:59,955 INFO L130 PetriNetUnfolder]: 376/1941 cut-off events. [2023-09-01 11:03:59,955 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:03:59,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 1941 events. 376/1941 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11116 event pairs, 72 based on Foata normal form. 0/1601 useless extension candidates. Maximal degree in co-relation 1377. Up to 192 conditions per place. [2023-09-01 11:04:00,060 INFO L119 LiptonReduction]: Number of co-enabled transitions 149460 [2023-09-01 11:04:03,597 INFO L134 LiptonReduction]: Checked pairs total: 537926 [2023-09-01 11:04:03,598 INFO L136 LiptonReduction]: Total number of compositions: 268 [2023-09-01 11:04:03,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:03,600 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1f240df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:03,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:03,640 INFO L130 PetriNetUnfolder]: 119/431 cut-off events. [2023-09-01 11:04:03,640 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-09-01 11:04:03,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:03,641 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:03,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:03,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:03,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1495007919, now seen corresponding path program 1 times [2023-09-01 11:04:03,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:03,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164687912] [2023-09-01 11:04:03,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:03,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:03,661 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:03,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:03,680 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:03,693 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:03,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 11:04:03,694 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:03,694 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:03,695 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:03,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 11:04:03,723 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 11:04:03,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 514 transitions, 1126 flow [2023-09-01 11:04:04,530 INFO L130 PetriNetUnfolder]: 660/3164 cut-off events. [2023-09-01 11:04:04,530 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:04:04,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3662 conditions, 3164 events. 660/3164 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 20880 event pairs, 201 based on Foata normal form. 0/2664 useless extension candidates. Maximal degree in co-relation 2159. Up to 448 conditions per place. [2023-09-01 11:04:04,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 422 places, 514 transitions, 1126 flow [2023-09-01 11:04:04,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 422 places, 514 transitions, 1126 flow [2023-09-01 11:04:04,639 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:04,640 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 422 places, 514 transitions, 1126 flow [2023-09-01 11:04:04,640 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 422 places, 514 transitions, 1126 flow [2023-09-01 11:04:04,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 514 transitions, 1126 flow [2023-09-01 11:04:05,386 INFO L130 PetriNetUnfolder]: 660/3164 cut-off events. [2023-09-01 11:04:05,387 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:04:05,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3662 conditions, 3164 events. 660/3164 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 20880 event pairs, 201 based on Foata normal form. 0/2664 useless extension candidates. Maximal degree in co-relation 2159. Up to 448 conditions per place. [2023-09-01 11:04:05,689 INFO L119 LiptonReduction]: Number of co-enabled transitions 195146 [2023-09-01 11:04:09,407 INFO L134 LiptonReduction]: Checked pairs total: 622519 [2023-09-01 11:04:09,407 INFO L136 LiptonReduction]: Total number of compositions: 294 [2023-09-01 11:04:09,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:09,409 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1f240df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:09,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:09,458 INFO L130 PetriNetUnfolder]: 143/508 cut-off events. [2023-09-01 11:04:09,459 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-09-01 11:04:09,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:09,459 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:09,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:09,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:09,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1312219948, now seen corresponding path program 1 times [2023-09-01 11:04:09,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:09,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569947281] [2023-09-01 11:04:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:09,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:09,482 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:09,500 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:09,500 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:09,500 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:09,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 11:04:09,500 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:09,501 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:09,501 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:09,501 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 11:04:09,531 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 11:04:09,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 569 transitions, 1258 flow [2023-09-01 11:04:10,791 INFO L130 PetriNetUnfolder]: 1264/5539 cut-off events. [2023-09-01 11:04:10,791 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:04:10,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6624 conditions, 5539 events. 1264/5539 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 42560 event pairs, 522 based on Foata normal form. 0/4751 useless extension candidates. Maximal degree in co-relation 3646. Up to 1024 conditions per place. [2023-09-01 11:04:10,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 466 places, 569 transitions, 1258 flow [2023-09-01 11:04:11,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 466 places, 569 transitions, 1258 flow [2023-09-01 11:04:11,026 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:11,026 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 466 places, 569 transitions, 1258 flow [2023-09-01 11:04:11,026 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 466 places, 569 transitions, 1258 flow [2023-09-01 11:04:11,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 569 transitions, 1258 flow [2023-09-01 11:04:12,243 INFO L130 PetriNetUnfolder]: 1264/5539 cut-off events. [2023-09-01 11:04:12,244 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:04:12,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6624 conditions, 5539 events. 1264/5539 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 42560 event pairs, 522 based on Foata normal form. 0/4751 useless extension candidates. Maximal degree in co-relation 3646. Up to 1024 conditions per place. [2023-09-01 11:04:12,828 INFO L119 LiptonReduction]: Number of co-enabled transitions 246768 [2023-09-01 11:04:16,600 INFO L134 LiptonReduction]: Checked pairs total: 909710 [2023-09-01 11:04:16,601 INFO L136 LiptonReduction]: Total number of compositions: 320 [2023-09-01 11:04:16,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:16,603 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1f240df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:16,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:16,671 INFO L130 PetriNetUnfolder]: 172/610 cut-off events. [2023-09-01 11:04:16,671 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2023-09-01 11:04:16,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:16,671 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:16,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:16,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1636789828, now seen corresponding path program 1 times [2023-09-01 11:04:16,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:16,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657451177] [2023-09-01 11:04:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:16,712 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:16,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:16,748 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:16,749 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:16,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 11:04:16,749 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:16,751 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:16,751 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:16,751 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 11:04:16,788 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 11:04:16,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 510 places, 624 transitions, 1392 flow [2023-09-01 11:04:19,446 INFO L130 PetriNetUnfolder]: 2572/10282 cut-off events. [2023-09-01 11:04:19,447 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:04:19,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12659 conditions, 10282 events. 2572/10282 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 91924 event pairs, 1291 based on Foata normal form. 0/8950 useless extension candidates. Maximal degree in co-relation 6606. Up to 2304 conditions per place. [2023-09-01 11:04:19,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 510 places, 624 transitions, 1392 flow [2023-09-01 11:04:19,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 510 places, 624 transitions, 1392 flow [2023-09-01 11:04:19,791 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:19,791 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 510 places, 624 transitions, 1392 flow [2023-09-01 11:04:19,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 510 places, 624 transitions, 1392 flow [2023-09-01 11:04:19,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 510 places, 624 transitions, 1392 flow [2023-09-01 11:04:22,453 INFO L130 PetriNetUnfolder]: 2572/10282 cut-off events. [2023-09-01 11:04:22,454 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:04:22,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12659 conditions, 10282 events. 2572/10282 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 91924 event pairs, 1291 based on Foata normal form. 0/8950 useless extension candidates. Maximal degree in co-relation 6606. Up to 2304 conditions per place. [2023-09-01 11:04:23,366 INFO L119 LiptonReduction]: Number of co-enabled transitions 304326 [2023-09-01 11:04:27,814 INFO L134 LiptonReduction]: Checked pairs total: 1128368 [2023-09-01 11:04:27,815 INFO L136 LiptonReduction]: Total number of compositions: 349 [2023-09-01 11:04:27,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:27,817 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1f240df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:27,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:27,943 INFO L130 PetriNetUnfolder]: 217/759 cut-off events. [2023-09-01 11:04:27,943 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2023-09-01 11:04:27,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:27,943 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:27,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:27,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash -781616342, now seen corresponding path program 1 times [2023-09-01 11:04:27,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:27,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192275840] [2023-09-01 11:04:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:27,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:27,964 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:27,982 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:27,982 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:27,982 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:27,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 11:04:27,983 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:27,983 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:27,983 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:27,983 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 11:04:28,019 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 11:04:28,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 554 places, 679 transitions, 1528 flow [2023-09-01 11:04:34,054 INFO L130 PetriNetUnfolder]: 5416/19889 cut-off events. [2023-09-01 11:04:34,054 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:04:34,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25095 conditions, 19889 events. 5416/19889 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 203271 event pairs, 3084 based on Foata normal form. 0/17501 useless extension candidates. Maximal degree in co-relation 12639. Up to 5120 conditions per place. [2023-09-01 11:04:34,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 554 places, 679 transitions, 1528 flow [2023-09-01 11:04:34,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 554 places, 679 transitions, 1528 flow [2023-09-01 11:04:34,870 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:34,870 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 554 places, 679 transitions, 1528 flow [2023-09-01 11:04:34,870 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 554 places, 679 transitions, 1528 flow [2023-09-01 11:04:34,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 554 places, 679 transitions, 1528 flow [2023-09-01 11:04:40,891 INFO L130 PetriNetUnfolder]: 5416/19889 cut-off events. [2023-09-01 11:04:40,891 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:04:41,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25095 conditions, 19889 events. 5416/19889 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 203271 event pairs, 3084 based on Foata normal form. 0/17501 useless extension candidates. Maximal degree in co-relation 12639. Up to 5120 conditions per place. [2023-09-01 11:04:42,790 INFO L119 LiptonReduction]: Number of co-enabled transitions 367820 [2023-09-01 11:04:47,289 INFO L134 LiptonReduction]: Checked pairs total: 1233332 [2023-09-01 11:04:47,289 INFO L136 LiptonReduction]: Total number of compositions: 370 [2023-09-01 11:04:47,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:47,290 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1f240df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:47,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:47,438 INFO L130 PetriNetUnfolder]: 270/948 cut-off events. [2023-09-01 11:04:47,439 INFO L131 PetriNetUnfolder]: For 308/308 co-relation queries the response was YES. [2023-09-01 11:04:47,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:47,439 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:47,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:47,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:47,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1058289488, now seen corresponding path program 1 times [2023-09-01 11:04:47,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:47,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862904011] [2023-09-01 11:04:47,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:47,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:47,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:47,490 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:47,490 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:47,490 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:47,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 11:04:47,491 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:47,491 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:47,491 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:47,491 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 11:04:47,531 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 11:04:47,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 598 places, 734 transitions, 1666 flow [2023-09-01 11:05:00,924 INFO L130 PetriNetUnfolder]: 11588/39480 cut-off events. [2023-09-01 11:05:00,924 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:05:02,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50844 conditions, 39480 events. 11588/39480 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 447220 event pairs, 7181 based on Foata normal form. 0/35012 useless extension candidates. Maximal degree in co-relation 25073. Up to 11264 conditions per place. [2023-09-01 11:05:02,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 598 places, 734 transitions, 1666 flow [2023-09-01 11:05:03,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 598 places, 734 transitions, 1666 flow [2023-09-01 11:05:03,164 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:05:03,164 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 598 places, 734 transitions, 1666 flow [2023-09-01 11:05:03,164 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 598 places, 734 transitions, 1666 flow [2023-09-01 11:05:03,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 598 places, 734 transitions, 1666 flow [2023-09-01 11:05:16,357 INFO L130 PetriNetUnfolder]: 11588/39480 cut-off events. [2023-09-01 11:05:16,357 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:05:17,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50844 conditions, 39480 events. 11588/39480 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 447220 event pairs, 7181 based on Foata normal form. 0/35012 useless extension candidates. Maximal degree in co-relation 25073. Up to 11264 conditions per place. [2023-09-01 11:05:20,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 437250 [2023-09-01 11:05:25,124 INFO L134 LiptonReduction]: Checked pairs total: 1466931 [2023-09-01 11:05:25,124 INFO L136 LiptonReduction]: Total number of compositions: 397 [2023-09-01 11:05:25,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:05:25,126 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1f240df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:05:25,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:05:25,294 INFO L130 PetriNetUnfolder]: 298/1055 cut-off events. [2023-09-01 11:05:25,294 INFO L131 PetriNetUnfolder]: For 436/436 co-relation queries the response was YES. [2023-09-01 11:05:25,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:05:25,295 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:05:25,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:05:25,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:05:25,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2036242342, now seen corresponding path program 1 times [2023-09-01 11:05:25,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:05:25,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432684274] [2023-09-01 11:05:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:05:25,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:05:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:25,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:05:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:25,372 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:05:25,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:05:25,373 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:05:25,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 11:05:25,374 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:05:25,376 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:05:25,376 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:05:25,376 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 11:05:25,438 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 11:05:25,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 642 places, 789 transitions, 1806 flow [2023-09-01 11:05:57,789 INFO L130 PetriNetUnfolder]: 24928/79551 cut-off events. [2023-09-01 11:05:57,789 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:06:03,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104242 conditions, 79551 events. 24928/79551 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 981727 event pairs, 16398 based on Foata normal form. 0/70955 useless extension candidates. Maximal degree in co-relation 50820. Up to 24576 conditions per place. [2023-09-01 11:06:03,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 642 places, 789 transitions, 1806 flow [2023-09-01 11:06:06,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 642 places, 789 transitions, 1806 flow [2023-09-01 11:06:06,330 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:06:06,330 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 642 places, 789 transitions, 1806 flow [2023-09-01 11:06:06,330 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 642 places, 789 transitions, 1806 flow [2023-09-01 11:06:06,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 642 places, 789 transitions, 1806 flow [2023-09-01 11:06:35,205 INFO L130 PetriNetUnfolder]: 24928/79551 cut-off events. [2023-09-01 11:06:35,205 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:06:41,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104242 conditions, 79551 events. 24928/79551 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 981727 event pairs, 16398 based on Foata normal form. 0/70955 useless extension candidates. Maximal degree in co-relation 50820. Up to 24576 conditions per place. [2023-09-01 11:06:49,468 INFO L119 LiptonReduction]: Number of co-enabled transitions 512616 [2023-09-01 11:06:54,235 INFO L134 LiptonReduction]: Checked pairs total: 1952194 [2023-09-01 11:06:54,235 INFO L136 LiptonReduction]: Total number of compositions: 423 [2023-09-01 11:06:54,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:06:54,237 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1f240df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:06:54,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:06:54,413 INFO L130 PetriNetUnfolder]: 415/1391 cut-off events. [2023-09-01 11:06:54,414 INFO L131 PetriNetUnfolder]: For 613/613 co-relation queries the response was YES. [2023-09-01 11:06:54,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:06:54,414 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 11:06:54,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:06:54,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:06:54,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1000392839, now seen corresponding path program 1 times [2023-09-01 11:06:54,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:06:54,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602675807] [2023-09-01 11:06:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:06:54,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:06:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:54,435 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:06:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:54,458 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:06:54,458 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:06:54,458 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:06:54,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 11:06:54,458 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:06:54,459 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:06:54,459 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:06:54,459 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 11:06:54,503 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 11:06:54,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 686 places, 844 transitions, 1948 flow [2023-09-01 11:08:01,177 INFO L130 PetriNetUnfolder]: 53628/161606 cut-off events. [2023-09-01 11:08:01,178 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:08:20,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214985 conditions, 161606 events. 53628/161606 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2610. Compared 2175091 event pairs, 36879 based on Foata normal form. 0/144786 useless extension candidates. Maximal degree in co-relation 104216. Up to 53248 conditions per place. [2023-09-01 11:08:20,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 686 places, 844 transitions, 1948 flow [2023-09-01 11:08:27,775 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 686 places, 844 transitions, 1948 flow [2023-09-01 11:08:27,775 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:08:27,775 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 686 places, 844 transitions, 1948 flow [2023-09-01 11:08:27,775 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 686 places, 844 transitions, 1948 flow [2023-09-01 11:08:27,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 686 places, 844 transitions, 1948 flow