./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.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_19-callback_racing.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 a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --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 10:54:43,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:54:43,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:54:43,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:54:43,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:54:43,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:54:43,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:54:43,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:54:43,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:54:43,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:54:43,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:54:43,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:54:43,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:54:43,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:54:43,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:54:43,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:54:43,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:54:43,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:54:43,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:54:43,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:54:43,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:54:43,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:54:43,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:54:43,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:54:43,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:54:43,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:54:43,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:54:43,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:54:43,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:54:43,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:54:43,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:54:43,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:54:43,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:54:43,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:54:43,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:54:43,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:54:43,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:54:43,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:54:43,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:54:43,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:54:43,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:54:43,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:54:43,950 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:54:43,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:54:43,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:54:43,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:54:43,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:54:43,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:54:43,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:54:43,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:54:43,952 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:54:43,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:54:43,952 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:54:43,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:54:43,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:54:43,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:54:43,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:54:43,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:54:43,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:54:43,953 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:54:43,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:54:43,954 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:54:43,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:54:43,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:54:43,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:54:43,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:54:43,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:54:43,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:54:43,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:54:43,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:54:43,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:54:43,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:54:43,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:54:43,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:54:43,956 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:54:43,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:54:43,956 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:54:43,956 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:54:44,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:54:44,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:54:44,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:54:44,198 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:54:44,198 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:54:44,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-09-01 10:54:45,150 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:54:45,327 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:54:45,338 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-09-01 10:54:45,355 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5221878d9/24e6827c2912451c9139c5f0888be20b/FLAG11c61ee1a [2023-09-01 10:54:45,364 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5221878d9/24e6827c2912451c9139c5f0888be20b [2023-09-01 10:54:45,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:54:45,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:54:45,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:54:45,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:54:45,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:54:45,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5100e8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45, skipping insertion in model container [2023-09-01 10:54:45,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:54:45,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:54:45,669 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_19-callback_racing.i[30212,30225] [2023-09-01 10:54:45,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:54:45,696 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:54:45,729 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_19-callback_racing.i[30212,30225] [2023-09-01 10:54:45,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:54:45,766 WARN L667 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 10:54:45,770 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:54:45,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45 WrapperNode [2023-09-01 10:54:45,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:54:45,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:54:45,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:54:45,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:54:45,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,821 INFO L138 Inliner]: procedures = 173, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-09-01 10:54:45,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:54:45,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:54:45,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:54:45,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:54:45,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:54:45,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:54:45,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:54:45,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:54:45,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45" (1/1) ... [2023-09-01 10:54:45,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:54:45,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:54:45,899 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 10:54:45,918 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 10:54:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:54:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:54:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:54:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:54:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:54:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:54:45,931 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:54:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:54:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:54:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:54:45,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:54:45,932 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 10:54:46,069 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:54:46,071 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:54:46,227 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:54:46,232 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:54:46,232 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-09-01 10:54:46,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:54:46 BoogieIcfgContainer [2023-09-01 10:54:46,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:54:46,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:54:46,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:54:46,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:54:46,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:54:45" (1/3) ... [2023-09-01 10:54:46,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d1a43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:54:46, skipping insertion in model container [2023-09-01 10:54:46,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:54:45" (2/3) ... [2023-09-01 10:54:46,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d1a43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:54:46, skipping insertion in model container [2023-09-01 10:54:46,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:54:46" (3/3) ... [2023-09-01 10:54:46,238 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2023-09-01 10:54:46,243 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:54:46,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:54:46,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:54:46,249 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:54:46,284 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:54:46,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 135 transitions, 278 flow [2023-09-01 10:54:46,400 INFO L130 PetriNetUnfolder]: 26/205 cut-off events. [2023-09-01 10:54:46,400 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:54:46,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 205 events. 26/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 529 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-09-01 10:54:46,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 135 transitions, 278 flow [2023-09-01 10:54:46,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 130 transitions, 265 flow [2023-09-01 10:54:46,421 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:46,431 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 130 transitions, 265 flow [2023-09-01 10:54:46,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 130 transitions, 265 flow [2023-09-01 10:54:46,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 130 transitions, 265 flow [2023-09-01 10:54:46,460 INFO L130 PetriNetUnfolder]: 25/200 cut-off events. [2023-09-01 10:54:46,460 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:54:46,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 200 events. 25/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 492 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-09-01 10:54:46,463 INFO L119 LiptonReduction]: Number of co-enabled transitions 3040 [2023-09-01 10:54:48,985 INFO L134 LiptonReduction]: Checked pairs total: 4311 [2023-09-01 10:54:48,985 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-09-01 10:54:48,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:49,002 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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:49,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:49,007 INFO L130 PetriNetUnfolder]: 11/37 cut-off events. [2023-09-01 10:54:49,007 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:54:49,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:49,007 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:54:49,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:49,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:49,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2099235342, now seen corresponding path program 1 times [2023-09-01 10:54:49,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:49,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747397022] [2023-09-01 10:54:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:49,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:49,127 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:49,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:49,177 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:49,177 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:49,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:54:49,180 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:49,187 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:49,188 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:49,188 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:54:49,210 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:54:49,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 157 transitions, 332 flow [2023-09-01 10:54:49,275 INFO L130 PetriNetUnfolder]: 43/321 cut-off events. [2023-09-01 10:54:49,275 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:54:49,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 321 events. 43/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1104 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 207. Up to 9 conditions per place. [2023-09-01 10:54:49,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 157 transitions, 332 flow [2023-09-01 10:54:49,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 157 transitions, 332 flow [2023-09-01 10:54:49,280 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:49,280 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 157 transitions, 332 flow [2023-09-01 10:54:49,281 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 157 transitions, 332 flow [2023-09-01 10:54:49,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 157 transitions, 332 flow [2023-09-01 10:54:49,306 INFO L130 PetriNetUnfolder]: 43/321 cut-off events. [2023-09-01 10:54:49,306 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:54:49,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 321 events. 43/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1104 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 207. Up to 9 conditions per place. [2023-09-01 10:54:49,311 INFO L119 LiptonReduction]: Number of co-enabled transitions 7320 [2023-09-01 10:54:51,986 INFO L134 LiptonReduction]: Checked pairs total: 12194 [2023-09-01 10:54:51,987 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-09-01 10:54:51,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:51,989 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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:51,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:51,993 INFO L130 PetriNetUnfolder]: 22/72 cut-off events. [2023-09-01 10:54:51,993 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 10:54:51,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:51,993 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:54:51,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:51,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:51,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1130747368, now seen corresponding path program 1 times [2023-09-01 10:54:51,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:51,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069087909] [2023-09-01 10:54:51,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:51,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:52,013 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:52,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:52,033 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:52,034 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:52,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:54:52,035 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:52,036 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:52,036 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:52,036 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:54:52,050 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 10:54:52,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 179 transitions, 388 flow [2023-09-01 10:54:52,077 INFO L130 PetriNetUnfolder]: 65/468 cut-off events. [2023-09-01 10:54:52,077 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:54:52,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 468 events. 65/468 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1836 event pairs, 1 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 329. Up to 16 conditions per place. [2023-09-01 10:54:52,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 179 transitions, 388 flow [2023-09-01 10:54:52,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 179 transitions, 388 flow [2023-09-01 10:54:52,081 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:52,081 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 179 transitions, 388 flow [2023-09-01 10:54:52,081 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 179 transitions, 388 flow [2023-09-01 10:54:52,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 179 transitions, 388 flow [2023-09-01 10:54:52,120 INFO L130 PetriNetUnfolder]: 65/468 cut-off events. [2023-09-01 10:54:52,120 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:54:52,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 468 events. 65/468 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1836 event pairs, 1 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 329. Up to 16 conditions per place. [2023-09-01 10:54:52,128 INFO L119 LiptonReduction]: Number of co-enabled transitions 12360 [2023-09-01 10:54:54,776 INFO L134 LiptonReduction]: Checked pairs total: 22561 [2023-09-01 10:54:54,777 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-09-01 10:54:54,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:54,779 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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:54,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:54,784 INFO L130 PetriNetUnfolder]: 34/110 cut-off events. [2023-09-01 10:54:54,784 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 10:54:54,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:54,784 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:54:54,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:54,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:54,785 INFO L85 PathProgramCache]: Analyzing trace with hash 144683176, now seen corresponding path program 1 times [2023-09-01 10:54:54,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:54,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371684295] [2023-09-01 10:54:54,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:54,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:54,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:54,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:54,841 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:54,841 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:54,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:54:54,841 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:54,842 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:54,842 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:54,842 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:54:54,855 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:54:54,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 201 transitions, 446 flow [2023-09-01 10:54:54,906 INFO L130 PetriNetUnfolder]: 99/679 cut-off events. [2023-09-01 10:54:54,907 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:54:54,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 679 events. 99/679 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2925 event pairs, 6 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 488. Up to 32 conditions per place. [2023-09-01 10:54:54,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 201 transitions, 446 flow [2023-09-01 10:54:54,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 201 transitions, 446 flow [2023-09-01 10:54:54,911 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:54,911 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 201 transitions, 446 flow [2023-09-01 10:54:54,911 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 201 transitions, 446 flow [2023-09-01 10:54:54,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 201 transitions, 446 flow [2023-09-01 10:54:54,959 INFO L130 PetriNetUnfolder]: 99/679 cut-off events. [2023-09-01 10:54:54,959 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:54:54,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 679 events. 99/679 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2925 event pairs, 6 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 488. Up to 32 conditions per place. [2023-09-01 10:54:54,972 INFO L119 LiptonReduction]: Number of co-enabled transitions 18320 [2023-09-01 10:54:57,609 INFO L134 LiptonReduction]: Checked pairs total: 32417 [2023-09-01 10:54:57,609 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-09-01 10:54:57,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:57,611 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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:57,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:57,619 INFO L130 PetriNetUnfolder]: 46/152 cut-off events. [2023-09-01 10:54:57,619 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 10:54:57,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:57,619 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:57,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:57,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:57,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1174682695, now seen corresponding path program 1 times [2023-09-01 10:54:57,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:57,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206255661] [2023-09-01 10:54:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:57,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:57,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:57,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:57,662 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:57,663 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:57,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:54:57,663 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:57,663 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:57,663 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:57,663 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:54:57,679 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 10:54:57,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 223 transitions, 506 flow [2023-09-01 10:54:57,781 INFO L130 PetriNetUnfolder]: 161/1022 cut-off events. [2023-09-01 10:54:57,781 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:54:57,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 1022 events. 161/1022 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4919 event pairs, 23 based on Foata normal form. 0/872 useless extension candidates. Maximal degree in co-relation 724. Up to 80 conditions per place. [2023-09-01 10:54:57,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 223 transitions, 506 flow [2023-09-01 10:54:57,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 223 transitions, 506 flow [2023-09-01 10:54:57,789 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:54:57,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 223 transitions, 506 flow [2023-09-01 10:54:57,790 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 223 transitions, 506 flow [2023-09-01 10:54:57,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 223 transitions, 506 flow [2023-09-01 10:54:57,876 INFO L130 PetriNetUnfolder]: 161/1022 cut-off events. [2023-09-01 10:54:57,876 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:54:57,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 1022 events. 161/1022 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4919 event pairs, 23 based on Foata normal form. 0/872 useless extension candidates. Maximal degree in co-relation 724. Up to 80 conditions per place. [2023-09-01 10:54:57,894 INFO L119 LiptonReduction]: Number of co-enabled transitions 25200 [2023-09-01 10:55:00,719 INFO L134 LiptonReduction]: Checked pairs total: 46889 [2023-09-01 10:55:00,719 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-09-01 10:55:00,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:55:00,725 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:55:00,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:55:00,749 INFO L130 PetriNetUnfolder]: 61/203 cut-off events. [2023-09-01 10:55:00,749 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 10:55:00,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:55:00,749 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:55:00,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:55:00,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:55:00,750 INFO L85 PathProgramCache]: Analyzing trace with hash -504175984, now seen corresponding path program 1 times [2023-09-01 10:55:00,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:55:00,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524214054] [2023-09-01 10:55:00,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:55:00,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:55:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:00,779 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:55:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:00,802 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:55:00,802 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:55:00,802 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:55:00,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:55:00,802 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:55:00,803 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:55:00,803 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:55:00,803 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:55:00,819 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 10:55:00,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 245 transitions, 568 flow [2023-09-01 10:55:00,966 INFO L130 PetriNetUnfolder]: 287/1637 cut-off events. [2023-09-01 10:55:00,967 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:55:00,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 1637 events. 287/1637 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9187 event pairs, 72 based on Foata normal form. 0/1408 useless extension candidates. Maximal degree in co-relation 1121. Up to 192 conditions per place. [2023-09-01 10:55:00,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 245 transitions, 568 flow [2023-09-01 10:55:01,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 245 transitions, 568 flow [2023-09-01 10:55:01,005 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:55:01,009 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 245 transitions, 568 flow [2023-09-01 10:55:01,009 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 245 transitions, 568 flow [2023-09-01 10:55:01,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 245 transitions, 568 flow [2023-09-01 10:55:01,144 INFO L130 PetriNetUnfolder]: 287/1637 cut-off events. [2023-09-01 10:55:01,144 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:55:01,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 1637 events. 287/1637 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9187 event pairs, 72 based on Foata normal form. 0/1408 useless extension candidates. Maximal degree in co-relation 1121. Up to 192 conditions per place. [2023-09-01 10:55:01,201 INFO L119 LiptonReduction]: Number of co-enabled transitions 33000 [2023-09-01 10:55:04,112 INFO L134 LiptonReduction]: Checked pairs total: 62515 [2023-09-01 10:55:04,113 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-09-01 10:55:04,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:55:04,115 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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:55:04,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:55:04,127 INFO L130 PetriNetUnfolder]: 78/263 cut-off events. [2023-09-01 10:55:04,127 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 10:55:04,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:55:04,127 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:55:04,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:55:04,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:55:04,128 INFO L85 PathProgramCache]: Analyzing trace with hash -504472264, now seen corresponding path program 1 times [2023-09-01 10:55:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:55:04,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529392098] [2023-09-01 10:55:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:55:04,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:55:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:04,158 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:55:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:04,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:55:04,170 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:55:04,170 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:55:04,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:55:04,171 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:55:04,171 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:55:04,171 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:55:04,171 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:55:04,185 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 10:55:04,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 267 transitions, 632 flow [2023-09-01 10:55:04,513 INFO L130 PetriNetUnfolder]: 557/2812 cut-off events. [2023-09-01 10:55:04,514 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:55:04,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3310 conditions, 2812 events. 557/2812 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18705 event pairs, 201 based on Foata normal form. 0/2440 useless extension candidates. Maximal degree in co-relation 1855. Up to 448 conditions per place. [2023-09-01 10:55:04,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 267 transitions, 632 flow [2023-09-01 10:55:04,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 267 transitions, 632 flow [2023-09-01 10:55:04,538 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:55:04,539 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 267 transitions, 632 flow [2023-09-01 10:55:04,539 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 267 transitions, 632 flow [2023-09-01 10:55:04,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 267 transitions, 632 flow [2023-09-01 10:55:04,864 INFO L130 PetriNetUnfolder]: 557/2812 cut-off events. [2023-09-01 10:55:04,865 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:55:04,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3310 conditions, 2812 events. 557/2812 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18705 event pairs, 201 based on Foata normal form. 0/2440 useless extension candidates. Maximal degree in co-relation 1855. Up to 448 conditions per place. [2023-09-01 10:55:04,921 INFO L119 LiptonReduction]: Number of co-enabled transitions 41720 [2023-09-01 10:55:08,245 INFO L134 LiptonReduction]: Checked pairs total: 82389 [2023-09-01 10:55:08,246 INFO L136 LiptonReduction]: Total number of compositions: 224 [2023-09-01 10:55:08,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:55:08,247 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:55:08,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:55:08,263 INFO L130 PetriNetUnfolder]: 98/338 cut-off events. [2023-09-01 10:55:08,263 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 10:55:08,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:55:08,263 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:55:08,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:55:08,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:55:08,264 INFO L85 PathProgramCache]: Analyzing trace with hash 421903111, now seen corresponding path program 1 times [2023-09-01 10:55:08,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:55:08,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218787553] [2023-09-01 10:55:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:55:08,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:55:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:08,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:55:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:08,291 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:55:08,291 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:55:08,291 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:55:08,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:55:08,291 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:55:08,291 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:55:08,291 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:55:08,291 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:55:08,308 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:55:08,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 289 transitions, 698 flow [2023-09-01 10:55:08,923 INFO L130 PetriNetUnfolder]: 1147/5139 cut-off events. [2023-09-01 10:55:08,923 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:55:08,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6224 conditions, 5139 events. 1147/5139 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 40485 event pairs, 522 based on Foata normal form. 0/4496 useless extension candidates. Maximal degree in co-relation 3294. Up to 1024 conditions per place. [2023-09-01 10:55:08,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 289 transitions, 698 flow [2023-09-01 10:55:08,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 289 transitions, 698 flow [2023-09-01 10:55:08,976 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:55:08,976 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 289 transitions, 698 flow [2023-09-01 10:55:08,976 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 289 transitions, 698 flow [2023-09-01 10:55:08,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 289 transitions, 698 flow [2023-09-01 10:55:09,613 INFO L130 PetriNetUnfolder]: 1147/5139 cut-off events. [2023-09-01 10:55:09,614 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:55:09,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6224 conditions, 5139 events. 1147/5139 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 40485 event pairs, 522 based on Foata normal form. 0/4496 useless extension candidates. Maximal degree in co-relation 3294. Up to 1024 conditions per place. [2023-09-01 10:55:09,793 INFO L119 LiptonReduction]: Number of co-enabled transitions 51360 [2023-09-01 10:55:13,082 INFO L134 LiptonReduction]: Checked pairs total: 102575 [2023-09-01 10:55:13,082 INFO L136 LiptonReduction]: Total number of compositions: 242 [2023-09-01 10:55:13,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:55:13,083 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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:55:13,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:55:13,113 INFO L130 PetriNetUnfolder]: 133/451 cut-off events. [2023-09-01 10:55:13,113 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 10:55:13,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:55:13,113 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:55:13,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:55:13,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:55:13,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1591478006, now seen corresponding path program 1 times [2023-09-01 10:55:13,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:55:13,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693465913] [2023-09-01 10:55:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:55:13,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:55:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:13,129 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:55:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:13,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:55:13,143 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:55:13,143 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:55:13,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:55:13,143 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:55:13,144 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:55:13,144 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:55:13,144 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:55:13,163 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 10:55:13,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 311 transitions, 766 flow [2023-09-01 10:55:14,442 INFO L130 PetriNetUnfolder]: 2441/9834 cut-off events. [2023-09-01 10:55:14,442 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:55:14,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12211 conditions, 9834 events. 2441/9834 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 88907 event pairs, 1291 based on Foata normal form. 0/8664 useless extension candidates. Maximal degree in co-relation 6206. Up to 2304 conditions per place. [2023-09-01 10:55:14,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 311 transitions, 766 flow [2023-09-01 10:55:14,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 311 transitions, 766 flow [2023-09-01 10:55:14,577 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:55:14,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 311 transitions, 766 flow [2023-09-01 10:55:14,577 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 311 transitions, 766 flow [2023-09-01 10:55:14,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 311 transitions, 766 flow [2023-09-01 10:55:15,933 INFO L130 PetriNetUnfolder]: 2441/9834 cut-off events. [2023-09-01 10:55:15,933 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:55:16,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12211 conditions, 9834 events. 2441/9834 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 88907 event pairs, 1291 based on Foata normal form. 0/8664 useless extension candidates. Maximal degree in co-relation 6206. Up to 2304 conditions per place. [2023-09-01 10:55:16,235 INFO L119 LiptonReduction]: Number of co-enabled transitions 61920 [2023-09-01 10:55:19,605 INFO L134 LiptonReduction]: Checked pairs total: 124407 [2023-09-01 10:55:19,605 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-09-01 10:55:19,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:55:19,606 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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:55:19,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:55:19,639 INFO L130 PetriNetUnfolder]: 179/601 cut-off events. [2023-09-01 10:55:19,639 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 10:55:19,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:55:19,639 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:55:19,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:55:19,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:55:19,640 INFO L85 PathProgramCache]: Analyzing trace with hash -542805282, now seen corresponding path program 1 times [2023-09-01 10:55:19,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:55:19,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437872304] [2023-09-01 10:55:19,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:55:19,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:55:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:19,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:55:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:19,681 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:55:19,681 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:55:19,681 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:55:19,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:55:19,682 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:55:19,682 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:55:19,682 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:55:19,682 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 10:55:19,701 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 10:55:19,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 333 transitions, 836 flow [2023-09-01 10:55:22,720 INFO L130 PetriNetUnfolder]: 5271/19393 cut-off events. [2023-09-01 10:55:22,720 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:55:22,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24599 conditions, 19393 events. 5271/19393 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 198768 event pairs, 3084 based on Foata normal form. 0/17184 useless extension candidates. Maximal degree in co-relation 12191. Up to 5120 conditions per place. [2023-09-01 10:55:22,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 333 transitions, 836 flow [2023-09-01 10:55:22,977 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 303 places, 333 transitions, 836 flow [2023-09-01 10:55:22,977 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:55:22,977 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 303 places, 333 transitions, 836 flow [2023-09-01 10:55:22,977 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 303 places, 333 transitions, 836 flow [2023-09-01 10:55:22,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 333 transitions, 836 flow [2023-09-01 10:55:25,934 INFO L130 PetriNetUnfolder]: 5271/19393 cut-off events. [2023-09-01 10:55:25,934 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:55:26,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24599 conditions, 19393 events. 5271/19393 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 198768 event pairs, 3084 based on Foata normal form. 0/17184 useless extension candidates. Maximal degree in co-relation 12191. Up to 5120 conditions per place. [2023-09-01 10:55:26,610 INFO L119 LiptonReduction]: Number of co-enabled transitions 73400 [2023-09-01 10:55:30,111 INFO L134 LiptonReduction]: Checked pairs total: 151044 [2023-09-01 10:55:30,111 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-09-01 10:55:30,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:55:30,112 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:55:30,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:55:30,158 INFO L130 PetriNetUnfolder]: 258/834 cut-off events. [2023-09-01 10:55:30,158 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 10:55:30,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:55:30,158 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:55:30,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:55:30,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:55:30,159 INFO L85 PathProgramCache]: Analyzing trace with hash -503631764, now seen corresponding path program 1 times [2023-09-01 10:55:30,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:55:30,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134454943] [2023-09-01 10:55:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:55:30,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:55:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:30,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:55:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:30,208 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:55:30,208 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:55:30,208 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:55:30,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:55:30,209 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:55:30,210 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:55:30,210 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:55:30,210 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 10:55:30,231 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 10:55:30,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 355 transitions, 908 flow [2023-09-01 10:55:36,845 INFO L130 PetriNetUnfolder]: 11429/38936 cut-off events. [2023-09-01 10:55:36,845 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:55:37,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50300 conditions, 38936 events. 11429/38936 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 443024 event pairs, 7181 based on Foata normal form. 0/34664 useless extension candidates. Maximal degree in co-relation 24577. Up to 11264 conditions per place. [2023-09-01 10:55:37,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 323 places, 355 transitions, 908 flow [2023-09-01 10:55:37,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 323 places, 355 transitions, 908 flow [2023-09-01 10:55:37,533 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:55:37,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 323 places, 355 transitions, 908 flow [2023-09-01 10:55:37,534 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 323 places, 355 transitions, 908 flow [2023-09-01 10:55:37,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 355 transitions, 908 flow [2023-09-01 10:55:44,180 INFO L130 PetriNetUnfolder]: 11429/38936 cut-off events. [2023-09-01 10:55:44,180 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:55:44,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50300 conditions, 38936 events. 11429/38936 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 443024 event pairs, 7181 based on Foata normal form. 0/34664 useless extension candidates. Maximal degree in co-relation 24577. Up to 11264 conditions per place. [2023-09-01 10:55:45,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 85800 [2023-09-01 10:55:49,256 INFO L134 LiptonReduction]: Checked pairs total: 178443 [2023-09-01 10:55:49,256 INFO L136 LiptonReduction]: Total number of compositions: 297 [2023-09-01 10:55:49,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:55:49,258 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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:55:49,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:55:49,326 INFO L130 PetriNetUnfolder]: 379/1170 cut-off events. [2023-09-01 10:55:49,326 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 10:55:49,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:55:49,326 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:55:49,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:55:49,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:55:49,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1665119257, now seen corresponding path program 1 times [2023-09-01 10:55:49,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:55:49,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271093240] [2023-09-01 10:55:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:55:49,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:55:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:49,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:55:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:55:49,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:55:49,367 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:55:49,367 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:55:49,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:55:49,368 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:55:49,369 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:55:49,369 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:55:49,369 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 10:55:49,389 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:55:49,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 377 transitions, 982 flow [2023-09-01 10:56:04,365 INFO L130 PetriNetUnfolder]: 24755/78959 cut-off events. [2023-09-01 10:56:04,365 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:56:05,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103650 conditions, 78959 events. 24755/78959 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 978095 event pairs, 16398 based on Foata normal form. 0/70576 useless extension candidates. Maximal degree in co-relation 50276. Up to 24576 conditions per place. [2023-09-01 10:56:05,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 343 places, 377 transitions, 982 flow [2023-09-01 10:56:06,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 343 places, 377 transitions, 982 flow [2023-09-01 10:56:06,517 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:06,517 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 343 places, 377 transitions, 982 flow [2023-09-01 10:56:06,518 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 343 places, 377 transitions, 982 flow [2023-09-01 10:56:06,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 377 transitions, 982 flow [2023-09-01 10:56:21,459 INFO L130 PetriNetUnfolder]: 24755/78959 cut-off events. [2023-09-01 10:56:21,459 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:56:22,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103650 conditions, 78959 events. 24755/78959 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 978095 event pairs, 16398 based on Foata normal form. 0/70576 useless extension candidates. Maximal degree in co-relation 50276. Up to 24576 conditions per place. [2023-09-01 10:56:25,325 INFO L119 LiptonReduction]: Number of co-enabled transitions 99120 [2023-09-01 10:56:29,562 INFO L134 LiptonReduction]: Checked pairs total: 227051 [2023-09-01 10:56:29,562 INFO L136 LiptonReduction]: Total number of compositions: 324 [2023-09-01 10:56:29,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:29,564 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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:29,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:29,675 INFO L130 PetriNetUnfolder]: 594/1715 cut-off events. [2023-09-01 10:56:29,676 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 10:56:29,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:29,676 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 10:56:29,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:29,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:29,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1847365623, now seen corresponding path program 1 times [2023-09-01 10:56:29,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:29,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369026926] [2023-09-01 10:56:29,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:29,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:29,692 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:29,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:29,716 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:29,716 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:29,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:56:29,716 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:29,719 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:29,719 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:29,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 10:56:29,750 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 10:56:29,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 399 transitions, 1058 flow [2023-09-01 10:57:03,443 INFO L130 PetriNetUnfolder]: 53441/160966 cut-off events. [2023-09-01 10:57:03,443 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:57:07,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214345 conditions, 160966 events. 53441/160966 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2787. Compared 2177146 event pairs, 36879 based on Foata normal form. 0/144376 useless extension candidates. Maximal degree in co-relation 103624. Up to 53248 conditions per place. [2023-09-01 10:57:07,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 399 transitions, 1058 flow [2023-09-01 10:57:09,567 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 399 transitions, 1058 flow [2023-09-01 10:57:09,567 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:09,567 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 363 places, 399 transitions, 1058 flow [2023-09-01 10:57:09,567 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 363 places, 399 transitions, 1058 flow [2023-09-01 10:57:09,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 399 transitions, 1058 flow [2023-09-01 10:57:42,110 INFO L130 PetriNetUnfolder]: 53441/160966 cut-off events. [2023-09-01 10:57:42,110 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:57:46,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214345 conditions, 160966 events. 53441/160966 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2787. Compared 2177146 event pairs, 36879 based on Foata normal form. 0/144376 useless extension candidates. Maximal degree in co-relation 103624. Up to 53248 conditions per place. [2023-09-01 10:57:55,290 INFO L119 LiptonReduction]: Number of co-enabled transitions 113360 [2023-09-01 10:57:59,181 INFO L134 LiptonReduction]: Checked pairs total: 239918 [2023-09-01 10:57:59,181 INFO L136 LiptonReduction]: Total number of compositions: 338 [2023-09-01 10:57:59,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:59,182 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;@177fc3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:59,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:59,365 INFO L130 PetriNetUnfolder]: 954/2571 cut-off events. [2023-09-01 10:57:59,365 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 10:57:59,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:59,365 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 10:57:59,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:59,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:59,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1361780754, now seen corresponding path program 1 times [2023-09-01 10:57:59,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:59,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200840571] [2023-09-01 10:57:59,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:59,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:59,383 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:59,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:59,398 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:59,398 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:59,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:57:59,398 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:59,399 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:59,399 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:59,399 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 10:57:59,421 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 10:57:59,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 421 transitions, 1136 flow [2023-09-01 10:59:15,697 INFO L130 PetriNetUnfolder]: 114895/328989 cut-off events. [2023-09-01 10:59:15,698 INFO L131 PetriNetUnfolder]: For 115234/115234 co-relation queries the response was YES.