./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:33:46,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:33:46,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:33:46,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:33:46,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:33:46,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:33:46,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:33:46,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:33:46,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:33:46,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:33:46,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:33:46,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:33:46,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:33:46,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:33:46,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:33:46,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:33:46,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:33:46,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:33:46,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:33:46,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:33:46,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:33:46,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:33:46,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:33:46,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:33:46,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:33:46,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:33:46,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:33:46,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:33:46,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:33:46,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:33:46,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:33:46,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:33:46,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:33:46,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:33:46,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:33:46,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:33:46,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:33:46,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:33:46,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:33:46,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:33:46,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:33:46,910 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:33:46,950 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:33:46,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:33:46,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:33:46,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:33:46,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:33:46,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:33:46,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:33:46,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:33:46,954 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:33:46,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:33:46,955 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:33:46,956 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:33:46,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:33:46,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:33:46,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:33:46,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:33:46,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:33:46,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:33:46,957 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:33:46,958 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:33:46,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:33:46,958 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:33:46,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:33:46,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:33:46,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:33:46,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:33:46,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:33:46,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:33:46,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:33:46,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:33:46,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:33:46,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:33:46,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:33:46,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:33:46,961 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:33:46,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:33:46,962 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:33:46,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:33:47,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:33:47,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:33:47,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:33:47,327 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:33:47,327 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:33:47,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-09-01 06:33:48,418 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:33:48,732 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:33:48,733 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-09-01 06:33:48,742 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5bf59ee6/d863e1ac79eb474ca45b3caaa60ccd15/FLAGd8ca67f08 [2023-09-01 06:33:48,760 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5bf59ee6/d863e1ac79eb474ca45b3caaa60ccd15 [2023-09-01 06:33:48,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:33:48,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:33:48,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:33:48,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:33:48,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:33:48,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:33:48" (1/1) ... [2023-09-01 06:33:48,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5043d607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:48, skipping insertion in model container [2023-09-01 06:33:48,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:33:48" (1/1) ... [2023-09-01 06:33:48,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:33:48,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:33:49,159 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2023-09-01 06:33:49,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:33:49,196 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:33:49,241 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2023-09-01 06:33:49,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:33:49,346 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:33:49,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49 WrapperNode [2023-09-01 06:33:49,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:33:49,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:33:49,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:33:49,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:33:49,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49" (1/1) ... [2023-09-01 06:33:49,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49" (1/1) ... [2023-09-01 06:33:49,419 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2023-09-01 06:33:49,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:33:49,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:33:49,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:33:49,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:33:49,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49" (1/1) ... [2023-09-01 06:33:49,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49" (1/1) ... [2023-09-01 06:33:49,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49" (1/1) ... [2023-09-01 06:33:49,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49" (1/1) ... [2023-09-01 06:33:49,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49" (1/1) ... [2023-09-01 06:33:49,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49" (1/1) ... [2023-09-01 06:33:49,469 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49" (1/1) ... [2023-09-01 06:33:49,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49" (1/1) ... [2023-09-01 06:33:49,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:33:49,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:33:49,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:33:49,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:33:49,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49" (1/1) ... [2023-09-01 06:33:49,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:33:49,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:33:49,514 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 06:33:49,542 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 06:33:49,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:33:49,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:33:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:33:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:33:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:33:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:33:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:33:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:33:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:33:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:33:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:33:49,560 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 06:33:49,689 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:33:49,691 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:33:49,963 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:33:49,970 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:33:49,970 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 06:33:49,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:33:49 BoogieIcfgContainer [2023-09-01 06:33:49,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:33:49,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:33:49,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:33:49,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:33:49,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:33:48" (1/3) ... [2023-09-01 06:33:49,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1564dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:33:49, skipping insertion in model container [2023-09-01 06:33:49,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:33:49" (2/3) ... [2023-09-01 06:33:49,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1564dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:33:49, skipping insertion in model container [2023-09-01 06:33:49,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:33:49" (3/3) ... [2023-09-01 06:33:49,980 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2023-09-01 06:33:49,987 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:33:49,995 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:33:49,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 06:33:49,996 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:33:50,044 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:33:50,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 140 transitions, 288 flow [2023-09-01 06:33:50,187 INFO L130 PetriNetUnfolder]: 23/185 cut-off events. [2023-09-01 06:33:50,187 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:33:50,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 185 events. 23/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 437 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-09-01 06:33:50,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 140 transitions, 288 flow [2023-09-01 06:33:50,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 131 transitions, 267 flow [2023-09-01 06:33:50,204 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:33:50,221 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 131 transitions, 267 flow [2023-09-01 06:33:50,230 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 131 transitions, 267 flow [2023-09-01 06:33:50,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 131 transitions, 267 flow [2023-09-01 06:33:50,277 INFO L130 PetriNetUnfolder]: 22/176 cut-off events. [2023-09-01 06:33:50,278 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:33:50,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 176 events. 22/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 424 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-09-01 06:33:50,283 INFO L119 LiptonReduction]: Number of co-enabled transitions 3960 [2023-09-01 06:33:54,093 INFO L134 LiptonReduction]: Checked pairs total: 6421 [2023-09-01 06:33:54,093 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-09-01 06:33:54,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:33:54,112 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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:33:54,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:33:54,118 INFO L130 PetriNetUnfolder]: 5/34 cut-off events. [2023-09-01 06:33:54,119 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:33:54,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:33:54,120 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:33:54,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:33:54,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:33:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1310248364, now seen corresponding path program 1 times [2023-09-01 06:33:54,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:33:54,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246363285] [2023-09-01 06:33:54,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:33:54,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:33:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:54,274 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:33:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:54,346 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:33:54,348 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:33:54,349 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:33:54,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:33:54,351 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:33:54,359 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:33:54,360 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:33:54,360 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:33:54,390 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:33:54,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 178 transitions, 374 flow [2023-09-01 06:33:54,429 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2023-09-01 06:33:54,429 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:33:54,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 906 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2023-09-01 06:33:54,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 178 transitions, 374 flow [2023-09-01 06:33:54,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 178 transitions, 374 flow [2023-09-01 06:33:54,436 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:33:54,436 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 178 transitions, 374 flow [2023-09-01 06:33:54,437 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 178 transitions, 374 flow [2023-09-01 06:33:54,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 178 transitions, 374 flow [2023-09-01 06:33:54,467 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2023-09-01 06:33:54,467 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:33:54,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 906 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2023-09-01 06:33:54,477 INFO L119 LiptonReduction]: Number of co-enabled transitions 11880 [2023-09-01 06:33:57,938 INFO L134 LiptonReduction]: Checked pairs total: 27873 [2023-09-01 06:33:57,939 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-09-01 06:33:57,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:33:57,942 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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:33:57,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:33:57,948 INFO L130 PetriNetUnfolder]: 15/76 cut-off events. [2023-09-01 06:33:57,948 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:33:57,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:33:57,949 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:33:57,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:33:57,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:33:57,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1434790353, now seen corresponding path program 1 times [2023-09-01 06:33:57,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:33:57,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335408937] [2023-09-01 06:33:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:33:57,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:33:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:57,973 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:33:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:57,995 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:33:57,995 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:33:57,996 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:33:57,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:33:57,996 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:33:57,997 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:33:57,997 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:33:57,997 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:33:58,016 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:33:58,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 216 transitions, 462 flow [2023-09-01 06:33:58,074 INFO L130 PetriNetUnfolder]: 62/462 cut-off events. [2023-09-01 06:33:58,074 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:33:58,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 462 events. 62/462 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1579 event pairs, 1 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 312. Up to 16 conditions per place. [2023-09-01 06:33:58,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 216 transitions, 462 flow [2023-09-01 06:33:58,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 216 transitions, 462 flow [2023-09-01 06:33:58,082 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:33:58,082 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 216 transitions, 462 flow [2023-09-01 06:33:58,082 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 216 transitions, 462 flow [2023-09-01 06:33:58,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 216 transitions, 462 flow [2023-09-01 06:33:58,128 INFO L130 PetriNetUnfolder]: 62/462 cut-off events. [2023-09-01 06:33:58,129 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:33:58,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 462 events. 62/462 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1579 event pairs, 1 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 312. Up to 16 conditions per place. [2023-09-01 06:33:58,151 INFO L119 LiptonReduction]: Number of co-enabled transitions 22032 [2023-09-01 06:34:01,540 INFO L134 LiptonReduction]: Checked pairs total: 54058 [2023-09-01 06:34:01,541 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-09-01 06:34:01,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:34:01,544 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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:34:01,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:34:01,553 INFO L130 PetriNetUnfolder]: 23/118 cut-off events. [2023-09-01 06:34:01,554 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:34:01,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:34:01,554 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:34:01,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:34:01,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:34:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1867147610, now seen corresponding path program 1 times [2023-09-01 06:34:01,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:34:01,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727706638] [2023-09-01 06:34:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:34:01,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:34:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:01,578 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:34:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:01,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:34:01,621 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:34:01,622 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:34:01,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:34:01,623 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:34:01,623 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:34:01,624 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:34:01,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:34:01,650 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:34:01,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 254 transitions, 552 flow [2023-09-01 06:34:01,768 INFO L130 PetriNetUnfolder]: 96/700 cut-off events. [2023-09-01 06:34:01,769 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:34:01,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 700 events. 96/700 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2743 event pairs, 6 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 482. Up to 32 conditions per place. [2023-09-01 06:34:01,776 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 254 transitions, 552 flow [2023-09-01 06:34:01,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 227 places, 254 transitions, 552 flow [2023-09-01 06:34:01,782 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:34:01,782 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 227 places, 254 transitions, 552 flow [2023-09-01 06:34:01,782 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 227 places, 254 transitions, 552 flow [2023-09-01 06:34:01,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 254 transitions, 552 flow [2023-09-01 06:34:01,865 INFO L130 PetriNetUnfolder]: 96/700 cut-off events. [2023-09-01 06:34:01,865 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:34:01,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 700 events. 96/700 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2743 event pairs, 6 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 482. Up to 32 conditions per place. [2023-09-01 06:34:01,890 INFO L119 LiptonReduction]: Number of co-enabled transitions 34992 [2023-09-01 06:34:05,545 INFO L134 LiptonReduction]: Checked pairs total: 94570 [2023-09-01 06:34:05,545 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-09-01 06:34:05,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:34:05,548 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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:34:05,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:34:05,562 INFO L130 PetriNetUnfolder]: 38/180 cut-off events. [2023-09-01 06:34:05,563 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:34:05,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:34:05,563 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:34:05,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:34:05,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:34:05,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1659279497, now seen corresponding path program 1 times [2023-09-01 06:34:05,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:34:05,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392992075] [2023-09-01 06:34:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:34:05,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:34:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:05,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:34:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:05,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:34:05,610 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:34:05,610 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:34:05,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:34:05,611 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:34:05,611 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:34:05,612 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:34:05,612 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:34:05,632 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:34:05,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 292 transitions, 644 flow [2023-09-01 06:34:05,806 INFO L130 PetriNetUnfolder]: 158/1102 cut-off events. [2023-09-01 06:34:05,807 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:34:05,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 1102 events. 158/1102 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5074 event pairs, 23 based on Foata normal form. 0/856 useless extension candidates. Maximal degree in co-relation 745. Up to 80 conditions per place. [2023-09-01 06:34:05,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 292 transitions, 644 flow [2023-09-01 06:34:05,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 292 transitions, 644 flow [2023-09-01 06:34:05,831 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:34:05,831 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 292 transitions, 644 flow [2023-09-01 06:34:05,832 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 292 transitions, 644 flow [2023-09-01 06:34:05,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 292 transitions, 644 flow [2023-09-01 06:34:05,994 INFO L130 PetriNetUnfolder]: 158/1102 cut-off events. [2023-09-01 06:34:05,994 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:34:06,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 1102 events. 158/1102 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5074 event pairs, 23 based on Foata normal form. 0/856 useless extension candidates. Maximal degree in co-relation 745. Up to 80 conditions per place. [2023-09-01 06:34:06,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 50760 [2023-09-01 06:34:09,603 INFO L134 LiptonReduction]: Checked pairs total: 141064 [2023-09-01 06:34:09,604 INFO L136 LiptonReduction]: Total number of compositions: 222 [2023-09-01 06:34:09,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:34:09,606 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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:34:09,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:34:09,625 INFO L130 PetriNetUnfolder]: 47/235 cut-off events. [2023-09-01 06:34:09,626 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:34:09,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:34:09,626 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:34:09,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:34:09,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:34:09,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2075176213, now seen corresponding path program 1 times [2023-09-01 06:34:09,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:34:09,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151629431] [2023-09-01 06:34:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:34:09,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:34:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:09,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:34:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:09,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:34:09,708 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:34:09,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:34:09,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:34:09,710 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:34:09,712 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:34:09,713 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:34:09,713 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:34:09,740 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:34:09,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 330 transitions, 738 flow [2023-09-01 06:34:10,091 INFO L130 PetriNetUnfolder]: 284/1840 cut-off events. [2023-09-01 06:34:10,092 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:34:10,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2072 conditions, 1840 events. 284/1840 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10387 event pairs, 72 based on Foata normal form. 0/1444 useless extension candidates. Maximal degree in co-relation 1201. Up to 192 conditions per place. [2023-09-01 06:34:10,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 330 transitions, 738 flow [2023-09-01 06:34:10,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 330 transitions, 738 flow [2023-09-01 06:34:10,139 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:34:10,140 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 330 transitions, 738 flow [2023-09-01 06:34:10,141 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 330 transitions, 738 flow [2023-09-01 06:34:10,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 330 transitions, 738 flow [2023-09-01 06:34:10,447 INFO L130 PetriNetUnfolder]: 284/1840 cut-off events. [2023-09-01 06:34:10,447 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:34:10,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2072 conditions, 1840 events. 284/1840 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10387 event pairs, 72 based on Foata normal form. 0/1444 useless extension candidates. Maximal degree in co-relation 1201. Up to 192 conditions per place. [2023-09-01 06:34:10,543 INFO L119 LiptonReduction]: Number of co-enabled transitions 69336 [2023-09-01 06:34:14,387 INFO L134 LiptonReduction]: Checked pairs total: 195873 [2023-09-01 06:34:14,388 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-09-01 06:34:14,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:34:14,390 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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:34:14,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:34:14,415 INFO L130 PetriNetUnfolder]: 63/313 cut-off events. [2023-09-01 06:34:14,415 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:34:14,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:34:14,416 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:34:14,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:34:14,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:34:14,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1699783297, now seen corresponding path program 1 times [2023-09-01 06:34:14,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:34:14,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389627632] [2023-09-01 06:34:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:34:14,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:34:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:14,440 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:34:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:14,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:34:14,460 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:34:14,460 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:34:14,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:34:14,460 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:34:14,461 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:34:14,461 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:34:14,461 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:34:14,485 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:34:14,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 368 transitions, 834 flow [2023-09-01 06:34:15,146 INFO L130 PetriNetUnfolder]: 554/3266 cut-off events. [2023-09-01 06:34:15,146 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:34:15,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 3266 events. 554/3266 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22500 event pairs, 201 based on Foata normal form. 0/2592 useless extension candidates. Maximal degree in co-relation 2058. Up to 448 conditions per place. [2023-09-01 06:34:15,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 368 transitions, 834 flow [2023-09-01 06:34:15,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 368 transitions, 834 flow [2023-09-01 06:34:15,233 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:34:15,233 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 326 places, 368 transitions, 834 flow [2023-09-01 06:34:15,234 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 326 places, 368 transitions, 834 flow [2023-09-01 06:34:15,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 368 transitions, 834 flow [2023-09-01 06:34:16,014 INFO L130 PetriNetUnfolder]: 554/3266 cut-off events. [2023-09-01 06:34:16,015 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:34:16,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 3266 events. 554/3266 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22500 event pairs, 201 based on Foata normal form. 0/2592 useless extension candidates. Maximal degree in co-relation 2058. Up to 448 conditions per place. [2023-09-01 06:34:16,239 INFO L119 LiptonReduction]: Number of co-enabled transitions 90720 [2023-09-01 06:34:20,387 INFO L134 LiptonReduction]: Checked pairs total: 296448 [2023-09-01 06:34:20,387 INFO L136 LiptonReduction]: Total number of compositions: 272 [2023-09-01 06:34:20,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:34:20,389 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:34:20,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:34:20,437 INFO L130 PetriNetUnfolder]: 91/429 cut-off events. [2023-09-01 06:34:20,438 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:34:20,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:34:20,438 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:34:20,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:34:20,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:34:20,439 INFO L85 PathProgramCache]: Analyzing trace with hash 243220937, now seen corresponding path program 1 times [2023-09-01 06:34:20,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:34:20,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040972895] [2023-09-01 06:34:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:34:20,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:34:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:20,461 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:34:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:20,481 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:34:20,482 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:34:20,482 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:34:20,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:34:20,482 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:34:20,483 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:34:20,483 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:34:20,483 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:34:20,515 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:34:20,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 359 places, 406 transitions, 932 flow [2023-09-01 06:34:21,852 INFO L130 PetriNetUnfolder]: 1144/6100 cut-off events. [2023-09-01 06:34:21,853 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:34:21,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7185 conditions, 6100 events. 1144/6100 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 50221 event pairs, 522 based on Foata normal form. 0/4892 useless extension candidates. Maximal degree in co-relation 3748. Up to 1024 conditions per place. [2023-09-01 06:34:21,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 359 places, 406 transitions, 932 flow [2023-09-01 06:34:22,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 359 places, 406 transitions, 932 flow [2023-09-01 06:34:22,007 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:34:22,007 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 359 places, 406 transitions, 932 flow [2023-09-01 06:34:22,007 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 359 places, 406 transitions, 932 flow [2023-09-01 06:34:22,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 359 places, 406 transitions, 932 flow [2023-09-01 06:34:23,181 INFO L130 PetriNetUnfolder]: 1144/6100 cut-off events. [2023-09-01 06:34:23,182 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:34:23,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7185 conditions, 6100 events. 1144/6100 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 50221 event pairs, 522 based on Foata normal form. 0/4892 useless extension candidates. Maximal degree in co-relation 3748. Up to 1024 conditions per place. [2023-09-01 06:34:23,513 INFO L119 LiptonReduction]: Number of co-enabled transitions 114912 [2023-09-01 06:34:27,966 INFO L134 LiptonReduction]: Checked pairs total: 337534 [2023-09-01 06:34:27,966 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-09-01 06:34:27,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:34:27,968 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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:34:27,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:34:28,020 INFO L130 PetriNetUnfolder]: 114/553 cut-off events. [2023-09-01 06:34:28,021 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:34:28,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:34:28,021 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:34:28,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:34:28,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:34:28,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1089598441, now seen corresponding path program 1 times [2023-09-01 06:34:28,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:34:28,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926184919] [2023-09-01 06:34:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:34:28,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:34:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:28,063 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:34:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:28,090 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:34:28,090 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:34:28,091 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:34:28,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:34:28,091 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:34:28,093 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:34:28,095 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:34:28,096 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:34:28,129 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:34:28,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 444 transitions, 1032 flow [2023-09-01 06:34:30,611 INFO L130 PetriNetUnfolder]: 2438/11814 cut-off events. [2023-09-01 06:34:30,612 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:34:30,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14191 conditions, 11814 events. 2438/11814 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 113607 event pairs, 1291 based on Foata normal form. 0/9560 useless extension candidates. Maximal degree in co-relation 7167. Up to 2304 conditions per place. [2023-09-01 06:34:30,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 392 places, 444 transitions, 1032 flow [2023-09-01 06:34:30,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 392 places, 444 transitions, 1032 flow [2023-09-01 06:34:30,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:34:30,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 392 places, 444 transitions, 1032 flow [2023-09-01 06:34:30,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 392 places, 444 transitions, 1032 flow [2023-09-01 06:34:30,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 444 transitions, 1032 flow [2023-09-01 06:34:33,228 INFO L130 PetriNetUnfolder]: 2438/11814 cut-off events. [2023-09-01 06:34:33,229 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:34:33,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14191 conditions, 11814 events. 2438/11814 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 113607 event pairs, 1291 based on Foata normal form. 0/9560 useless extension candidates. Maximal degree in co-relation 7167. Up to 2304 conditions per place. [2023-09-01 06:34:33,982 INFO L119 LiptonReduction]: Number of co-enabled transitions 141912 [2023-09-01 06:34:38,398 INFO L134 LiptonReduction]: Checked pairs total: 427301 [2023-09-01 06:34:38,398 INFO L136 LiptonReduction]: Total number of compositions: 325 [2023-09-01 06:34:38,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:34:38,400 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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:34:38,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:34:38,473 INFO L130 PetriNetUnfolder]: 160/749 cut-off events. [2023-09-01 06:34:38,473 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 06:34:38,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:34:38,474 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:34:38,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:34:38,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:34:38,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1943806978, now seen corresponding path program 1 times [2023-09-01 06:34:38,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:34:38,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315965197] [2023-09-01 06:34:38,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:34:38,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:34:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:38,498 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:34:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:38,519 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:34:38,519 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:34:38,520 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:34:38,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:34:38,520 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:34:38,521 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:34:38,521 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:34:38,521 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:34:38,549 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:34:38,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 482 transitions, 1134 flow [2023-09-01 06:34:43,998 INFO L130 PetriNetUnfolder]: 5268/23416 cut-off events. [2023-09-01 06:34:43,998 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:34:44,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28622 conditions, 23416 events. 5268/23416 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 257091 event pairs, 3084 based on Foata normal form. 0/19092 useless extension candidates. Maximal degree in co-relation 14171. Up to 5120 conditions per place. [2023-09-01 06:34:44,450 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 482 transitions, 1134 flow [2023-09-01 06:34:44,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 425 places, 482 transitions, 1134 flow [2023-09-01 06:34:44,656 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:34:44,656 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 425 places, 482 transitions, 1134 flow [2023-09-01 06:34:44,656 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 425 places, 482 transitions, 1134 flow [2023-09-01 06:34:44,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 482 transitions, 1134 flow [2023-09-01 06:34:50,172 INFO L130 PetriNetUnfolder]: 5268/23416 cut-off events. [2023-09-01 06:34:50,172 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:34:50,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28622 conditions, 23416 events. 5268/23416 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 257091 event pairs, 3084 based on Foata normal form. 0/19092 useless extension candidates. Maximal degree in co-relation 14171. Up to 5120 conditions per place. [2023-09-01 06:34:51,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 171720 [2023-09-01 06:34:56,623 INFO L134 LiptonReduction]: Checked pairs total: 526167 [2023-09-01 06:34:56,623 INFO L136 LiptonReduction]: Total number of compositions: 345 [2023-09-01 06:34:56,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:34:56,627 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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:34:56,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:34:56,756 INFO L130 PetriNetUnfolder]: 245/1058 cut-off events. [2023-09-01 06:34:56,756 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 06:34:56,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:34:56,757 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:34:56,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:34:56,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:34:56,757 INFO L85 PathProgramCache]: Analyzing trace with hash -35598934, now seen corresponding path program 1 times [2023-09-01 06:34:56,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:34:56,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674387402] [2023-09-01 06:34:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:34:56,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:34:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:56,796 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:34:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:56,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:34:56,834 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:34:56,834 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:34:56,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:34:56,834 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:34:56,835 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:34:56,835 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:34:56,838 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:34:56,876 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:34:56,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 458 places, 520 transitions, 1238 flow [2023-09-01 06:35:08,849 INFO L130 PetriNetUnfolder]: 11426/47050 cut-off events. [2023-09-01 06:35:08,849 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:35:10,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58414 conditions, 47050 events. 11426/47050 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 578664 event pairs, 7181 based on Foata normal form. 0/38608 useless extension candidates. Maximal degree in co-relation 28600. Up to 11264 conditions per place. [2023-09-01 06:35:10,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 458 places, 520 transitions, 1238 flow [2023-09-01 06:35:11,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 458 places, 520 transitions, 1238 flow [2023-09-01 06:35:11,642 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:35:11,642 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 458 places, 520 transitions, 1238 flow [2023-09-01 06:35:11,642 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 458 places, 520 transitions, 1238 flow [2023-09-01 06:35:11,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 458 places, 520 transitions, 1238 flow [2023-09-01 06:35:23,711 INFO L130 PetriNetUnfolder]: 11426/47050 cut-off events. [2023-09-01 06:35:23,711 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:35:26,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58414 conditions, 47050 events. 11426/47050 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 578664 event pairs, 7181 based on Foata normal form. 0/38608 useless extension candidates. Maximal degree in co-relation 28600. Up to 11264 conditions per place. [2023-09-01 06:35:28,791 INFO L119 LiptonReduction]: Number of co-enabled transitions 204336 [2023-09-01 06:35:33,677 INFO L134 LiptonReduction]: Checked pairs total: 711092 [2023-09-01 06:35:33,677 INFO L136 LiptonReduction]: Total number of compositions: 366 [2023-09-01 06:35:33,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:33,678 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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:33,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:35:33,810 INFO L130 PetriNetUnfolder]: 372/1498 cut-off events. [2023-09-01 06:35:33,810 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 06:35:33,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:33,810 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:35:33,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:33,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash 241769884, now seen corresponding path program 1 times [2023-09-01 06:35:33,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:33,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398208167] [2023-09-01 06:35:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:33,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:33,843 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:33,895 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:33,900 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:33,900 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:35:33,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:35:33,901 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:33,903 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:35:33,903 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:33,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:35:33,945 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:35:33,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 491 places, 558 transitions, 1344 flow [2023-09-01 06:36:03,707 INFO L130 PetriNetUnfolder]: 24752/95260 cut-off events. [2023-09-01 06:36:03,707 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:36:11,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119951 conditions, 95260 events. 24752/95260 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 1280747 event pairs, 16398 based on Foata normal form. 0/78604 useless extension candidates. Maximal degree in co-relation 58390. Up to 24576 conditions per place. [2023-09-01 06:36:11,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 491 places, 558 transitions, 1344 flow [2023-09-01 06:36:13,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 491 places, 558 transitions, 1344 flow [2023-09-01 06:36:13,095 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:36:13,095 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 491 places, 558 transitions, 1344 flow [2023-09-01 06:36:13,095 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 491 places, 558 transitions, 1344 flow [2023-09-01 06:36:13,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 491 places, 558 transitions, 1344 flow [2023-09-01 06:36:40,516 INFO L130 PetriNetUnfolder]: 24752/95260 cut-off events. [2023-09-01 06:36:40,516 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:36:46,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119951 conditions, 95260 events. 24752/95260 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 1280747 event pairs, 16398 based on Foata normal form. 0/78604 useless extension candidates. Maximal degree in co-relation 58390. Up to 24576 conditions per place. [2023-09-01 06:36:58,027 INFO L119 LiptonReduction]: Number of co-enabled transitions 239760 [2023-09-01 06:37:03,205 INFO L134 LiptonReduction]: Checked pairs total: 840701 [2023-09-01 06:37:03,205 INFO L136 LiptonReduction]: Total number of compositions: 396 [2023-09-01 06:37:03,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:37:03,206 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:37:03,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:37:03,459 INFO L130 PetriNetUnfolder]: 585/2175 cut-off events. [2023-09-01 06:37:03,459 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 06:37:03,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:37:03,460 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 06:37:03,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:37:03,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:37:03,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1053173884, now seen corresponding path program 1 times [2023-09-01 06:37:03,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:37:03,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403851054] [2023-09-01 06:37:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:37:03,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:37:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:03,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:37:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:03,517 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:37:03,517 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:37:03,517 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:37:03,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:37:03,517 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:37:03,518 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:37:03,518 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:37:03,518 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:37:03,553 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:37:03,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 524 places, 596 transitions, 1452 flow [2023-09-01 06:38:07,083 INFO L130 PetriNetUnfolder]: 53438/193646 cut-off events. [2023-09-01 06:38:07,084 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:38:21,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247025 conditions, 193646 events. 53438/193646 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2900. Compared 2821161 event pairs, 36879 based on Foata normal form. 0/160584 useless extension candidates. Maximal degree in co-relation 119925. Up to 53248 conditions per place. [2023-09-01 06:38:21,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 524 places, 596 transitions, 1452 flow [2023-09-01 06:38:26,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 524 places, 596 transitions, 1452 flow [2023-09-01 06:38:26,236 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:38:26,236 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 524 places, 596 transitions, 1452 flow [2023-09-01 06:38:26,238 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 524 places, 596 transitions, 1452 flow [2023-09-01 06:38:26,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 524 places, 596 transitions, 1452 flow [2023-09-01 06:39:27,556 INFO L130 PetriNetUnfolder]: 53438/193646 cut-off events. [2023-09-01 06:39:27,557 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:39:42,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247025 conditions, 193646 events. 53438/193646 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2900. Compared 2821161 event pairs, 36879 based on Foata normal form. 0/160584 useless extension candidates. Maximal degree in co-relation 119925. Up to 53248 conditions per place. [2023-09-01 06:40:07,903 INFO L119 LiptonReduction]: Number of co-enabled transitions 277992 [2023-09-01 06:40:13,366 INFO L134 LiptonReduction]: Checked pairs total: 879395 [2023-09-01 06:40:13,366 INFO L136 LiptonReduction]: Total number of compositions: 421 [2023-09-01 06:40:13,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:13,369 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;@7649c41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:13,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:13,698 INFO L130 PetriNetUnfolder]: 940/3225 cut-off events. [2023-09-01 06:40:13,698 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 06:40:13,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:13,699 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 06:40:13,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:13,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1426571170, now seen corresponding path program 1 times [2023-09-01 06:40:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:13,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912032957] [2023-09-01 06:40:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:13,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:13,726 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:13,755 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:13,755 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:13,755 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:13,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 06:40:13,756 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:13,757 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:13,757 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:13,757 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 06:40:13,808 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 06:40:13,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 557 places, 634 transitions, 1562 flow