./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.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_07-cond_racing2.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 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --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 10:49:48,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:49:48,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:49:48,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:49:48,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:49:48,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:49:48,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:49:48,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:49:48,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:49:48,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:49:48,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:49:48,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:49:48,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:49:48,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:49:48,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:49:48,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:49:48,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:49:48,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:49:48,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:49:48,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:49:48,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:49:48,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:49:48,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:49:48,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:49:48,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:49:48,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:49:48,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:49:48,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:49:48,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:49:48,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:49:48,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:49:48,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:49:48,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:49:48,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:49:48,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:49:48,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:49:48,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:49:48,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:49:48,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:49:48,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:49:48,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:49:48,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:49:48,971 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:49:48,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:49:48,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:49:48,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:49:48,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:49:48,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:49:48,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:49:48,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:49:48,974 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:49:48,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:49:48,975 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:49:48,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:49:48,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:49:48,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:49:48,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:49:48,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:49:48,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:49:48,977 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:49:48,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:49:48,977 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:49:48,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:49:48,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:49:48,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:49:48,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:49:48,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:49:48,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:49:48,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:49:48,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:49:48,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:49:48,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:49:48,979 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:49:48,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:49:48,980 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:49:48,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:49:48,980 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:49:48,981 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:49:49,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:49:49,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:49:49,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:49:49,326 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:49:49,327 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:49:49,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-09-01 10:49:50,496 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:49:50,795 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:49:50,800 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-09-01 10:49:50,822 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5090f27/2453e97a426f4318b601023fa9dbba8c/FLAG1c6b63fc3 [2023-09-01 10:49:50,836 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5090f27/2453e97a426f4318b601023fa9dbba8c [2023-09-01 10:49:50,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:49:50,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:49:50,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:49:50,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:49:50,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:49:50,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:49:50" (1/1) ... [2023-09-01 10:49:50,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f7bc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:50, skipping insertion in model container [2023-09-01 10:49:50,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:49:50" (1/1) ... [2023-09-01 10:49:50,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:49:50,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:49:51,280 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_07-cond_racing2.i[41322,41335] [2023-09-01 10:49:51,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:49:51,333 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:49:51,371 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_07-cond_racing2.i[41322,41335] [2023-09-01 10:49:51,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:49:51,452 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:49:51,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51 WrapperNode [2023-09-01 10:49:51,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:49:51,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:49:51,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:49:51,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:49:51,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51" (1/1) ... [2023-09-01 10:49:51,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51" (1/1) ... [2023-09-01 10:49:51,518 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-09-01 10:49:51,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:49:51,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:49:51,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:49:51,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:49:51,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51" (1/1) ... [2023-09-01 10:49:51,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51" (1/1) ... [2023-09-01 10:49:51,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51" (1/1) ... [2023-09-01 10:49:51,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51" (1/1) ... [2023-09-01 10:49:51,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51" (1/1) ... [2023-09-01 10:49:51,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51" (1/1) ... [2023-09-01 10:49:51,565 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51" (1/1) ... [2023-09-01 10:49:51,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51" (1/1) ... [2023-09-01 10:49:51,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:49:51,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:49:51,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:49:51,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:49:51,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51" (1/1) ... [2023-09-01 10:49:51,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:49:51,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:49:51,622 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 10:49:51,656 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 10:49:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:49:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:49:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:49:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:49:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:49:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:49:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:49:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:49:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:49:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:49:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:49:51,673 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 10:49:51,861 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:49:51,863 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:49:52,088 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:49:52,095 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:49:52,096 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 10:49:52,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:49:52 BoogieIcfgContainer [2023-09-01 10:49:52,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:49:52,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:49:52,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:49:52,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:49:52,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:49:50" (1/3) ... [2023-09-01 10:49:52,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e975fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:49:52, skipping insertion in model container [2023-09-01 10:49:52,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:51" (2/3) ... [2023-09-01 10:49:52,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e975fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:49:52, skipping insertion in model container [2023-09-01 10:49:52,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:49:52" (3/3) ... [2023-09-01 10:49:52,107 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2023-09-01 10:49:52,114 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:49:52,123 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:49:52,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:49:52,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:49:52,189 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:49:52,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 121 transitions, 250 flow [2023-09-01 10:49:52,315 INFO L130 PetriNetUnfolder]: 23/163 cut-off events. [2023-09-01 10:49:52,315 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:49:52,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 163 events. 23/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 360 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2023-09-01 10:49:52,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 121 transitions, 250 flow [2023-09-01 10:49:52,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 116 transitions, 237 flow [2023-09-01 10:49:52,332 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:52,345 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 116 transitions, 237 flow [2023-09-01 10:49:52,349 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 116 transitions, 237 flow [2023-09-01 10:49:52,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 116 transitions, 237 flow [2023-09-01 10:49:52,405 INFO L130 PetriNetUnfolder]: 22/158 cut-off events. [2023-09-01 10:49:52,406 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:49:52,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 158 events. 22/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 349 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2023-09-01 10:49:52,410 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-09-01 10:49:55,607 INFO L134 LiptonReduction]: Checked pairs total: 4289 [2023-09-01 10:49:55,608 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-09-01 10:49:55,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:49:55,624 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:49:55,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:49:55,630 INFO L130 PetriNetUnfolder]: 4/25 cut-off events. [2023-09-01 10:49:55,630 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:49:55,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:49:55,631 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:49:55,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:49:55,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:49:55,641 INFO L85 PathProgramCache]: Analyzing trace with hash 950607665, now seen corresponding path program 1 times [2023-09-01 10:49:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:49:55,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911984855] [2023-09-01 10:49:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:49:55,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:49:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:55,783 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:49:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:55,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:49:55,847 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:49:55,848 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:49:55,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:49:55,850 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:49:55,857 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:49:55,858 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:49:55,858 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:49:55,893 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:49:55,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 151 transitions, 320 flow [2023-09-01 10:49:55,935 INFO L130 PetriNetUnfolder]: 40/259 cut-off events. [2023-09-01 10:49:55,936 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:49:55,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 40/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 723 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 165. Up to 9 conditions per place. [2023-09-01 10:49:55,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 151 transitions, 320 flow [2023-09-01 10:49:55,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 151 transitions, 320 flow [2023-09-01 10:49:55,943 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:55,943 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 151 transitions, 320 flow [2023-09-01 10:49:55,944 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 151 transitions, 320 flow [2023-09-01 10:49:55,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 151 transitions, 320 flow [2023-09-01 10:49:55,974 INFO L130 PetriNetUnfolder]: 40/259 cut-off events. [2023-09-01 10:49:55,974 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:49:55,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 40/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 723 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 165. Up to 9 conditions per place. [2023-09-01 10:49:55,982 INFO L119 LiptonReduction]: Number of co-enabled transitions 7560 [2023-09-01 10:49:58,940 INFO L134 LiptonReduction]: Checked pairs total: 19419 [2023-09-01 10:49:58,940 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-09-01 10:49:58,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:49:58,944 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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:49:58,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:49:58,949 INFO L130 PetriNetUnfolder]: 15/64 cut-off events. [2023-09-01 10:49:58,950 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 10:49:58,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:49:58,950 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:49:58,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:49:58,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:49:58,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1552769436, now seen corresponding path program 1 times [2023-09-01 10:49:58,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:49:58,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529334107] [2023-09-01 10:49:58,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:49:58,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:49:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:58,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:49:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:59,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:49:59,001 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:49:59,001 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:49:59,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:49:59,001 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:49:59,002 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:49:59,002 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:49:59,002 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:49:59,020 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 10:49:59,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 181 transitions, 392 flow [2023-09-01 10:49:59,071 INFO L130 PetriNetUnfolder]: 62/386 cut-off events. [2023-09-01 10:49:59,071 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:49:59,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 386 events. 62/386 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1219 event pairs, 1 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-09-01 10:49:59,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 181 transitions, 392 flow [2023-09-01 10:49:59,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 181 transitions, 392 flow [2023-09-01 10:49:59,077 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:59,077 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 181 transitions, 392 flow [2023-09-01 10:49:59,077 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 181 transitions, 392 flow [2023-09-01 10:49:59,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 181 transitions, 392 flow [2023-09-01 10:49:59,125 INFO L130 PetriNetUnfolder]: 62/386 cut-off events. [2023-09-01 10:49:59,125 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:49:59,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 386 events. 62/386 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1219 event pairs, 1 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-09-01 10:49:59,138 INFO L119 LiptonReduction]: Number of co-enabled transitions 13944 [2023-09-01 10:50:01,930 INFO L134 LiptonReduction]: Checked pairs total: 34795 [2023-09-01 10:50:01,930 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-09-01 10:50:01,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:01,933 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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:01,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:01,941 INFO L130 PetriNetUnfolder]: 26/103 cut-off events. [2023-09-01 10:50:01,941 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 10:50:01,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:01,941 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:50:01,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:01,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1306786674, now seen corresponding path program 1 times [2023-09-01 10:50:01,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:01,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990177402] [2023-09-01 10:50:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:01,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:01,989 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:02,013 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:02,016 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:02,016 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:02,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:50:02,017 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:02,017 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:02,018 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:02,018 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:50:02,039 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:50:02,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 211 transitions, 466 flow [2023-09-01 10:50:02,112 INFO L130 PetriNetUnfolder]: 96/577 cut-off events. [2023-09-01 10:50:02,112 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:50:02,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 577 events. 96/577 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2109 event pairs, 6 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 406. Up to 32 conditions per place. [2023-09-01 10:50:02,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 211 transitions, 466 flow [2023-09-01 10:50:02,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 211 transitions, 466 flow [2023-09-01 10:50:02,122 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:02,123 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 211 transitions, 466 flow [2023-09-01 10:50:02,123 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 211 transitions, 466 flow [2023-09-01 10:50:02,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 211 transitions, 466 flow [2023-09-01 10:50:02,190 INFO L130 PetriNetUnfolder]: 96/577 cut-off events. [2023-09-01 10:50:02,190 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:50:02,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 577 events. 96/577 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2109 event pairs, 6 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 406. Up to 32 conditions per place. [2023-09-01 10:50:02,213 INFO L119 LiptonReduction]: Number of co-enabled transitions 22064 [2023-09-01 10:50:05,096 INFO L134 LiptonReduction]: Checked pairs total: 57997 [2023-09-01 10:50:05,096 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-09-01 10:50:05,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:05,099 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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:05,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:05,110 INFO L130 PetriNetUnfolder]: 34/140 cut-off events. [2023-09-01 10:50:05,110 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 10:50:05,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:05,110 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:05,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:05,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:05,111 INFO L85 PathProgramCache]: Analyzing trace with hash 988704650, now seen corresponding path program 1 times [2023-09-01 10:50:05,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:05,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017147411] [2023-09-01 10:50:05,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:05,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:05,159 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:05,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:05,198 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:05,199 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:05,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:50:05,199 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:05,200 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:05,200 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:05,200 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:50:05,226 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 10:50:05,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 241 transitions, 542 flow [2023-09-01 10:50:05,348 INFO L130 PetriNetUnfolder]: 158/900 cut-off events. [2023-09-01 10:50:05,348 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:50:05,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 900 events. 158/900 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3855 event pairs, 23 based on Foata normal form. 0/752 useless extension candidates. Maximal degree in co-relation 622. Up to 80 conditions per place. [2023-09-01 10:50:05,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 241 transitions, 542 flow [2023-09-01 10:50:05,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 241 transitions, 542 flow [2023-09-01 10:50:05,365 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:05,365 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 241 transitions, 542 flow [2023-09-01 10:50:05,366 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 241 transitions, 542 flow [2023-09-01 10:50:05,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 241 transitions, 542 flow [2023-09-01 10:50:05,479 INFO L130 PetriNetUnfolder]: 158/900 cut-off events. [2023-09-01 10:50:05,479 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:50:05,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 900 events. 158/900 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3855 event pairs, 23 based on Foata normal form. 0/752 useless extension candidates. Maximal degree in co-relation 622. Up to 80 conditions per place. [2023-09-01 10:50:05,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 31920 [2023-09-01 10:50:08,465 INFO L134 LiptonReduction]: Checked pairs total: 89022 [2023-09-01 10:50:08,465 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-09-01 10:50:08,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:08,468 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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:08,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:08,489 INFO L130 PetriNetUnfolder]: 47/190 cut-off events. [2023-09-01 10:50:08,489 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 10:50:08,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:08,490 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:08,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:08,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:08,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1875578010, now seen corresponding path program 1 times [2023-09-01 10:50:08,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:08,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860809160] [2023-09-01 10:50:08,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:08,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:08,512 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:08,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:08,531 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:08,531 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:08,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:50:08,531 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:08,532 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:08,532 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:08,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:50:08,554 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 10:50:08,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 271 transitions, 620 flow [2023-09-01 10:50:08,806 INFO L130 PetriNetUnfolder]: 284/1495 cut-off events. [2023-09-01 10:50:08,807 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:50:08,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 1495 events. 284/1495 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7884 event pairs, 72 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 999. Up to 192 conditions per place. [2023-09-01 10:50:08,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 271 transitions, 620 flow [2023-09-01 10:50:08,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 271 transitions, 620 flow [2023-09-01 10:50:08,840 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:08,840 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 271 transitions, 620 flow [2023-09-01 10:50:08,844 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 271 transitions, 620 flow [2023-09-01 10:50:08,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 271 transitions, 620 flow [2023-09-01 10:50:09,063 INFO L130 PetriNetUnfolder]: 284/1495 cut-off events. [2023-09-01 10:50:09,063 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:50:09,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 1495 events. 284/1495 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7884 event pairs, 72 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 999. Up to 192 conditions per place. [2023-09-01 10:50:09,133 INFO L119 LiptonReduction]: Number of co-enabled transitions 43512 [2023-09-01 10:50:12,075 INFO L134 LiptonReduction]: Checked pairs total: 124911 [2023-09-01 10:50:12,075 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-09-01 10:50:12,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:12,077 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:12,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:12,098 INFO L130 PetriNetUnfolder]: 69/263 cut-off events. [2023-09-01 10:50:12,098 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 10:50:12,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:12,099 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:12,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:12,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:12,099 INFO L85 PathProgramCache]: Analyzing trace with hash -884379108, now seen corresponding path program 1 times [2023-09-01 10:50:12,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:12,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684361506] [2023-09-01 10:50:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:12,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:12,122 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:12,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:12,143 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:12,143 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:12,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:50:12,144 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:12,144 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:12,144 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:12,144 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:50:12,167 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 10:50:12,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 301 transitions, 700 flow [2023-09-01 10:50:12,666 INFO L130 PetriNetUnfolder]: 554/2650 cut-off events. [2023-09-01 10:50:12,666 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:50:12,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3148 conditions, 2650 events. 554/2650 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17034 event pairs, 201 based on Foata normal form. 0/2280 useless extension candidates. Maximal degree in co-relation 1713. Up to 448 conditions per place. [2023-09-01 10:50:12,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 301 transitions, 700 flow [2023-09-01 10:50:12,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 301 transitions, 700 flow [2023-09-01 10:50:12,721 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:12,721 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 301 transitions, 700 flow [2023-09-01 10:50:12,721 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 301 transitions, 700 flow [2023-09-01 10:50:12,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 301 transitions, 700 flow [2023-09-01 10:50:13,218 INFO L130 PetriNetUnfolder]: 554/2650 cut-off events. [2023-09-01 10:50:13,219 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:50:13,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3148 conditions, 2650 events. 554/2650 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17034 event pairs, 201 based on Foata normal form. 0/2280 useless extension candidates. Maximal degree in co-relation 1713. Up to 448 conditions per place. [2023-09-01 10:50:13,349 INFO L119 LiptonReduction]: Number of co-enabled transitions 56840 [2023-09-01 10:50:16,527 INFO L134 LiptonReduction]: Checked pairs total: 185972 [2023-09-01 10:50:16,528 INFO L136 LiptonReduction]: Total number of compositions: 192 [2023-09-01 10:50:16,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:16,530 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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:16,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:16,558 INFO L130 PetriNetUnfolder]: 84/330 cut-off events. [2023-09-01 10:50:16,559 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 10:50:16,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:16,559 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:16,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:16,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:16,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1081819086, now seen corresponding path program 1 times [2023-09-01 10:50:16,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:16,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730424126] [2023-09-01 10:50:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:16,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:16,615 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:16,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:16,646 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:16,646 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:16,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:50:16,646 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:16,647 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:16,647 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:16,647 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:50:16,679 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:50:16,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 331 transitions, 782 flow [2023-09-01 10:50:17,603 INFO L130 PetriNetUnfolder]: 1144/4957 cut-off events. [2023-09-01 10:50:17,603 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:50:17,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6042 conditions, 4957 events. 1144/4957 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 38099 event pairs, 522 based on Foata normal form. 0/4316 useless extension candidates. Maximal degree in co-relation 3132. Up to 1024 conditions per place. [2023-09-01 10:50:17,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 331 transitions, 782 flow [2023-09-01 10:50:17,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 331 transitions, 782 flow [2023-09-01 10:50:17,728 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:17,728 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 331 transitions, 782 flow [2023-09-01 10:50:17,728 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 331 transitions, 782 flow [2023-09-01 10:50:17,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 331 transitions, 782 flow [2023-09-01 10:50:18,871 INFO L130 PetriNetUnfolder]: 1144/4957 cut-off events. [2023-09-01 10:50:18,871 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:50:18,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6042 conditions, 4957 events. 1144/4957 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 38099 event pairs, 522 based on Foata normal form. 0/4316 useless extension candidates. Maximal degree in co-relation 3132. Up to 1024 conditions per place. [2023-09-01 10:50:19,115 INFO L119 LiptonReduction]: Number of co-enabled transitions 71904 [2023-09-01 10:50:22,482 INFO L134 LiptonReduction]: Checked pairs total: 239779 [2023-09-01 10:50:22,483 INFO L136 LiptonReduction]: Total number of compositions: 204 [2023-09-01 10:50:22,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:22,484 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:22,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:22,519 INFO L130 PetriNetUnfolder]: 122/453 cut-off events. [2023-09-01 10:50:22,519 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 10:50:22,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:22,519 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:22,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:22,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:22,520 INFO L85 PathProgramCache]: Analyzing trace with hash 55504050, now seen corresponding path program 1 times [2023-09-01 10:50:22,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:22,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520353593] [2023-09-01 10:50:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:22,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:22,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:22,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:22,561 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:22,561 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:22,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:50:22,561 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:22,562 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:22,562 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:22,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:50:22,591 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 10:50:22,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 361 transitions, 866 flow [2023-09-01 10:50:24,450 INFO L130 PetriNetUnfolder]: 2438/9632 cut-off events. [2023-09-01 10:50:24,450 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:50:24,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12009 conditions, 9632 events. 2438/9632 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86277 event pairs, 1291 based on Foata normal form. 0/8464 useless extension candidates. Maximal degree in co-relation 6024. Up to 2304 conditions per place. [2023-09-01 10:50:24,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 361 transitions, 866 flow [2023-09-01 10:50:24,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 361 transitions, 866 flow [2023-09-01 10:50:24,648 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:24,648 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 361 transitions, 866 flow [2023-09-01 10:50:24,648 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 361 transitions, 866 flow [2023-09-01 10:50:24,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 361 transitions, 866 flow [2023-09-01 10:50:26,310 INFO L130 PetriNetUnfolder]: 2438/9632 cut-off events. [2023-09-01 10:50:26,311 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:50:26,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12009 conditions, 9632 events. 2438/9632 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86277 event pairs, 1291 based on Foata normal form. 0/8464 useless extension candidates. Maximal degree in co-relation 6024. Up to 2304 conditions per place. [2023-09-01 10:50:26,893 INFO L119 LiptonReduction]: Number of co-enabled transitions 88704 [2023-09-01 10:50:30,169 INFO L134 LiptonReduction]: Checked pairs total: 269516 [2023-09-01 10:50:30,169 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-09-01 10:50:30,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:30,171 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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:30,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:30,216 INFO L130 PetriNetUnfolder]: 169/608 cut-off events. [2023-09-01 10:50:30,216 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 10:50:30,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:30,216 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:30,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:30,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:30,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1490583923, now seen corresponding path program 1 times [2023-09-01 10:50:30,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:30,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548903915] [2023-09-01 10:50:30,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:30,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:30,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:30,284 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:30,285 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:30,285 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:30,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:50:30,285 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:30,288 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:30,288 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:30,288 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 10:50:30,321 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 10:50:30,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 391 transitions, 952 flow [2023-09-01 10:50:34,171 INFO L130 PetriNetUnfolder]: 5268/19171 cut-off events. [2023-09-01 10:50:34,172 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:50:34,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24377 conditions, 19171 events. 5268/19171 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 195302 event pairs, 3084 based on Foata normal form. 0/16964 useless extension candidates. Maximal degree in co-relation 11989. Up to 5120 conditions per place. [2023-09-01 10:50:34,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 391 transitions, 952 flow [2023-09-01 10:50:34,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 391 transitions, 952 flow [2023-09-01 10:50:34,772 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:34,772 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 391 transitions, 952 flow [2023-09-01 10:50:34,773 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 391 transitions, 952 flow [2023-09-01 10:50:34,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 391 transitions, 952 flow [2023-09-01 10:50:38,477 INFO L130 PetriNetUnfolder]: 5268/19171 cut-off events. [2023-09-01 10:50:38,477 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:50:38,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24377 conditions, 19171 events. 5268/19171 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 195302 event pairs, 3084 based on Foata normal form. 0/16964 useless extension candidates. Maximal degree in co-relation 11989. Up to 5120 conditions per place. [2023-09-01 10:50:39,599 INFO L119 LiptonReduction]: Number of co-enabled transitions 107240 [2023-09-01 10:50:43,075 INFO L134 LiptonReduction]: Checked pairs total: 364074 [2023-09-01 10:50:43,075 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-09-01 10:50:43,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:43,077 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:43,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:43,162 INFO L130 PetriNetUnfolder]: 245/838 cut-off events. [2023-09-01 10:50:43,162 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 10:50:43,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:43,163 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:43,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:43,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash 307147780, now seen corresponding path program 1 times [2023-09-01 10:50:43,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:43,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023608754] [2023-09-01 10:50:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:43,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:43,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:43,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:43,236 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:43,236 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:43,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:50:43,236 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:43,237 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:43,237 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:43,237 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 10:50:43,268 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 10:50:43,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 359 places, 421 transitions, 1040 flow [2023-09-01 10:50:51,687 INFO L130 PetriNetUnfolder]: 11426/38694 cut-off events. [2023-09-01 10:50:51,687 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:50:52,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50058 conditions, 38694 events. 11426/38694 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 438607 event pairs, 7181 based on Foata normal form. 0/34424 useless extension candidates. Maximal degree in co-relation 24355. Up to 11264 conditions per place. [2023-09-01 10:50:52,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 359 places, 421 transitions, 1040 flow [2023-09-01 10:50:53,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 359 places, 421 transitions, 1040 flow [2023-09-01 10:50:53,247 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:53,247 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 359 places, 421 transitions, 1040 flow [2023-09-01 10:50:53,247 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 359 places, 421 transitions, 1040 flow [2023-09-01 10:50:53,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 359 places, 421 transitions, 1040 flow [2023-09-01 10:51:01,786 INFO L130 PetriNetUnfolder]: 11426/38694 cut-off events. [2023-09-01 10:51:01,786 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:51:02,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50058 conditions, 38694 events. 11426/38694 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 438607 event pairs, 7181 based on Foata normal form. 0/34424 useless extension candidates. Maximal degree in co-relation 24355. Up to 11264 conditions per place. [2023-09-01 10:51:04,462 INFO L119 LiptonReduction]: Number of co-enabled transitions 127512 [2023-09-01 10:51:07,977 INFO L134 LiptonReduction]: Checked pairs total: 438027 [2023-09-01 10:51:07,977 INFO L136 LiptonReduction]: Total number of compositions: 252 [2023-09-01 10:51:07,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:51:07,978 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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:51:07,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:51:08,095 INFO L130 PetriNetUnfolder]: 361/1167 cut-off events. [2023-09-01 10:51:08,095 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 10:51:08,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:51:08,095 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:51:08,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:51:08,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:51:08,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2000235877, now seen corresponding path program 1 times [2023-09-01 10:51:08,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:51:08,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410153680] [2023-09-01 10:51:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:51:08,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:51:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:08,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:51:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:08,138 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:51:08,138 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:51:08,138 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:51:08,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:51:08,139 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:51:08,139 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:51:08,139 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:51:08,139 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 10:51:08,167 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:51:08,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 384 places, 451 transitions, 1130 flow [2023-09-01 10:51:27,145 INFO L130 PetriNetUnfolder]: 24752/78697 cut-off events. [2023-09-01 10:51:27,145 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:51:30,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103388 conditions, 78697 events. 24752/78697 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 978681 event pairs, 16398 based on Foata normal form. 0/70316 useless extension candidates. Maximal degree in co-relation 50034. Up to 24576 conditions per place. [2023-09-01 10:51:30,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 384 places, 451 transitions, 1130 flow [2023-09-01 10:51:32,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 384 places, 451 transitions, 1130 flow [2023-09-01 10:51:32,229 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:51:32,229 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 384 places, 451 transitions, 1130 flow [2023-09-01 10:51:32,229 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 384 places, 451 transitions, 1130 flow [2023-09-01 10:51:32,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 384 places, 451 transitions, 1130 flow [2023-09-01 10:51:51,738 INFO L130 PetriNetUnfolder]: 24752/78697 cut-off events. [2023-09-01 10:51:51,739 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:51:56,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103388 conditions, 78697 events. 24752/78697 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 978681 event pairs, 16398 based on Foata normal form. 0/70316 useless extension candidates. Maximal degree in co-relation 50034. Up to 24576 conditions per place. [2023-09-01 10:52:02,585 INFO L119 LiptonReduction]: Number of co-enabled transitions 149520 [2023-09-01 10:52:05,974 INFO L134 LiptonReduction]: Checked pairs total: 460695 [2023-09-01 10:52:05,975 INFO L136 LiptonReduction]: Total number of compositions: 264 [2023-09-01 10:52:05,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:52:05,976 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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:52:05,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:52:06,126 INFO L130 PetriNetUnfolder]: 585/1733 cut-off events. [2023-09-01 10:52:06,126 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 10:52:06,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:52:06,127 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 10:52:06,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:52:06,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:52:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1886689706, now seen corresponding path program 1 times [2023-09-01 10:52:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:52:06,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385884833] [2023-09-01 10:52:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:52:06,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:52:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:52:06,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:52:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:52:06,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:52:06,171 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:52:06,171 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:52:06,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:52:06,171 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:52:06,172 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:52:06,172 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:52:06,172 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 10:52:06,203 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 10:52:06,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 481 transitions, 1222 flow [2023-09-01 10:52:48,708 INFO L130 PetriNetUnfolder]: 53438/160684 cut-off events. [2023-09-01 10:52:48,708 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:52:57,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214063 conditions, 160684 events. 53438/160684 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2164095 event pairs, 36879 based on Foata normal form. 0/144096 useless extension candidates. Maximal degree in co-relation 103362. Up to 53248 conditions per place. [2023-09-01 10:52:57,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 481 transitions, 1222 flow [2023-09-01 10:53:01,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 481 transitions, 1222 flow [2023-09-01 10:53:01,270 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:53:01,270 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 481 transitions, 1222 flow [2023-09-01 10:53:01,270 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 481 transitions, 1222 flow [2023-09-01 10:53:01,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 481 transitions, 1222 flow [2023-09-01 10:53:44,150 INFO L130 PetriNetUnfolder]: 53438/160684 cut-off events. [2023-09-01 10:53:44,151 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:53:53,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214063 conditions, 160684 events. 53438/160684 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2164095 event pairs, 36879 based on Foata normal form. 0/144096 useless extension candidates. Maximal degree in co-relation 103362. Up to 53248 conditions per place. [2023-09-01 10:54:09,108 INFO L119 LiptonReduction]: Number of co-enabled transitions 173264 [2023-09-01 10:54:12,704 INFO L134 LiptonReduction]: Checked pairs total: 536928 [2023-09-01 10:54:12,704 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-09-01 10:54:12,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:12,709 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;@74967a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:12,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:12,991 INFO L130 PetriNetUnfolder]: 940/2582 cut-off events. [2023-09-01 10:54:12,991 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 10:54:12,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:12,991 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:12,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:12,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:12,992 INFO L85 PathProgramCache]: Analyzing trace with hash 944736493, now seen corresponding path program 1 times [2023-09-01 10:54:12,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:12,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463997349] [2023-09-01 10:54:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:12,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:13,012 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:13,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:13,037 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:13,037 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:13,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:54:13,037 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:13,038 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:13,038 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:13,038 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 10:54:13,072 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 10:54:13,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 511 transitions, 1316 flow