./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 11:01:26,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:01:26,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:01:27,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:01:27,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:01:27,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:01:27,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:01:27,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:01:27,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:01:27,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:01:27,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:01:27,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:01:27,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:01:27,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:01:27,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:01:27,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:01:27,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:01:27,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:01:27,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:01:27,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:01:27,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:01:27,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:01:27,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:01:27,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:01:27,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:01:27,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:01:27,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:01:27,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:01:27,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:01:27,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:01:27,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:01:27,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:01:27,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:01:27,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:01:27,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:01:27,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:01:27,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:01:27,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:01:27,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:01:27,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:01:27,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:01:27,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:01:27,101 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:01:27,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:01:27,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:01:27,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:01:27,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:01:27,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:01:27,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:01:27,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:01:27,105 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:01:27,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:01:27,106 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:01:27,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:01:27,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:01:27,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:01:27,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:01:27,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:01:27,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:01:27,107 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:01:27,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:01:27,108 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:01:27,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:01:27,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:01:27,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:01:27,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:01:27,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:01:27,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:01:27,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:01:27,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:01:27,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:01:27,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:01:27,110 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:01:27,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:01:27,110 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:01:27,111 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:01:27,111 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:01:27,111 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:01:27,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:01:27,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:01:27,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:01:27,444 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:01:27,445 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:01:27,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-09-01 11:01:28,668 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:01:28,898 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:01:28,899 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-09-01 11:01:28,911 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c133e6292/c3248eb249b34cf58da810864d21811b/FLAGd84f7d26f [2023-09-01 11:01:28,926 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c133e6292/c3248eb249b34cf58da810864d21811b [2023-09-01 11:01:28,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:01:28,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:01:28,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:01:28,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:01:28,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:01:28,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:01:28" (1/1) ... [2023-09-01 11:01:28,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67726e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:28, skipping insertion in model container [2023-09-01 11:01:28,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:01:28" (1/1) ... [2023-09-01 11:01:28,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:01:28,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:01:29,305 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_37-indirect_racing.i[30176,30189] [2023-09-01 11:01:29,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:01:29,339 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:01:29,372 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_37-indirect_racing.i[30176,30189] [2023-09-01 11:01:29,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:01:29,434 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:01:29,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29 WrapperNode [2023-09-01 11:01:29,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:01:29,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:01:29,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:01:29,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:01:29,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29" (1/1) ... [2023-09-01 11:01:29,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29" (1/1) ... [2023-09-01 11:01:29,495 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-09-01 11:01:29,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:01:29,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:01:29,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:01:29,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:01:29,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29" (1/1) ... [2023-09-01 11:01:29,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29" (1/1) ... [2023-09-01 11:01:29,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29" (1/1) ... [2023-09-01 11:01:29,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29" (1/1) ... [2023-09-01 11:01:29,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29" (1/1) ... [2023-09-01 11:01:29,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29" (1/1) ... [2023-09-01 11:01:29,536 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29" (1/1) ... [2023-09-01 11:01:29,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29" (1/1) ... [2023-09-01 11:01:29,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:01:29,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:01:29,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:01:29,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:01:29,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29" (1/1) ... [2023-09-01 11:01:29,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:01:29,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:01:29,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 11:01:29,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 11:01:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:01:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:01:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:01:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:01:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:01:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 11:01:29,632 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 11:01:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:01:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:01:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:01:29,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:01:29,633 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 11:01:29,785 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:01:29,787 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:01:29,957 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:01:29,963 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:01:29,963 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 11:01:29,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:01:29 BoogieIcfgContainer [2023-09-01 11:01:29,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:01:29,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:01:29,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:01:29,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:01:29,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:01:28" (1/3) ... [2023-09-01 11:01:29,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecbe270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:01:29, skipping insertion in model container [2023-09-01 11:01:29,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:01:29" (2/3) ... [2023-09-01 11:01:29,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecbe270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:01:29, skipping insertion in model container [2023-09-01 11:01:29,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:01:29" (3/3) ... [2023-09-01 11:01:29,972 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-09-01 11:01:29,978 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:01:29,986 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:01:29,986 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 11:01:29,986 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:01:30,044 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 11:01:30,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 108 transitions, 224 flow [2023-09-01 11:01:30,138 INFO L130 PetriNetUnfolder]: 17/140 cut-off events. [2023-09-01 11:01:30,139 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 11:01:30,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 140 events. 17/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 338 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2023-09-01 11:01:30,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 108 transitions, 224 flow [2023-09-01 11:01:30,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 103 transitions, 211 flow [2023-09-01 11:01:30,153 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:30,168 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 103 transitions, 211 flow [2023-09-01 11:01:30,175 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 103 transitions, 211 flow [2023-09-01 11:01:30,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 103 transitions, 211 flow [2023-09-01 11:01:30,223 INFO L130 PetriNetUnfolder]: 16/135 cut-off events. [2023-09-01 11:01:30,223 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:01:30,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 16/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 317 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2023-09-01 11:01:30,227 INFO L119 LiptonReduction]: Number of co-enabled transitions 2432 [2023-09-01 11:01:33,023 INFO L134 LiptonReduction]: Checked pairs total: 4247 [2023-09-01 11:01:33,023 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-09-01 11:01:33,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:33,040 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:33,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:33,045 INFO L130 PetriNetUnfolder]: 2/22 cut-off events. [2023-09-01 11:01:33,045 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:01:33,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:33,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 11:01:33,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:33,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash -598310129, now seen corresponding path program 1 times [2023-09-01 11:01:33,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999222333] [2023-09-01 11:01:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:33,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:33,226 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:33,227 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:33,229 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:33,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:01:33,231 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:33,233 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:33,234 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:33,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 11:01:33,264 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 11:01:33,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 142 transitions, 302 flow [2023-09-01 11:01:33,320 INFO L130 PetriNetUnfolder]: 31/230 cut-off events. [2023-09-01 11:01:33,320 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:01:33,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 230 events. 31/230 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 677 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2023-09-01 11:01:33,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 142 transitions, 302 flow [2023-09-01 11:01:33,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 142 transitions, 302 flow [2023-09-01 11:01:33,326 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:33,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 142 transitions, 302 flow [2023-09-01 11:01:33,327 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 142 transitions, 302 flow [2023-09-01 11:01:33,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 142 transitions, 302 flow [2023-09-01 11:01:33,360 INFO L130 PetriNetUnfolder]: 31/230 cut-off events. [2023-09-01 11:01:33,360 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:01:33,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 230 events. 31/230 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 677 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2023-09-01 11:01:33,366 INFO L119 LiptonReduction]: Number of co-enabled transitions 7616 [2023-09-01 11:01:36,044 INFO L134 LiptonReduction]: Checked pairs total: 15436 [2023-09-01 11:01:36,044 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-09-01 11:01:36,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:36,047 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:36,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:36,052 INFO L130 PetriNetUnfolder]: 10/54 cut-off events. [2023-09-01 11:01:36,053 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 11:01:36,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:36,053 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 11:01:36,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:36,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:36,054 INFO L85 PathProgramCache]: Analyzing trace with hash 560708747, now seen corresponding path program 1 times [2023-09-01 11:01:36,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:36,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715913176] [2023-09-01 11:01:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:36,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:36,081 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:36,130 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:36,130 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:36,130 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:36,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:01:36,131 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:36,132 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:36,132 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:36,132 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 11:01:36,150 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 11:01:36,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 176 transitions, 382 flow [2023-09-01 11:01:36,186 INFO L130 PetriNetUnfolder]: 50/351 cut-off events. [2023-09-01 11:01:36,186 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:01:36,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 351 events. 50/351 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1160 event pairs, 1 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 238. Up to 16 conditions per place. [2023-09-01 11:01:36,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 176 transitions, 382 flow [2023-09-01 11:01:36,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 176 transitions, 382 flow [2023-09-01 11:01:36,192 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:36,192 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 176 transitions, 382 flow [2023-09-01 11:01:36,192 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 176 transitions, 382 flow [2023-09-01 11:01:36,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 176 transitions, 382 flow [2023-09-01 11:01:36,223 INFO L130 PetriNetUnfolder]: 50/351 cut-off events. [2023-09-01 11:01:36,224 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:01:36,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 351 events. 50/351 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1160 event pairs, 1 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 238. Up to 16 conditions per place. [2023-09-01 11:01:36,238 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2023-09-01 11:01:38,893 INFO L134 LiptonReduction]: Checked pairs total: 33194 [2023-09-01 11:01:38,893 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-09-01 11:01:38,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:38,896 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:38,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:38,902 INFO L130 PetriNetUnfolder]: 19/88 cut-off events. [2023-09-01 11:01:38,903 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 11:01:38,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:38,903 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 11:01:38,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:38,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:38,904 INFO L85 PathProgramCache]: Analyzing trace with hash 187445566, now seen corresponding path program 1 times [2023-09-01 11:01:38,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:38,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637445541] [2023-09-01 11:01:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:38,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:38,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:38,969 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:38,969 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:38,969 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:38,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:01:38,970 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:38,970 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:38,971 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:38,971 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 11:01:38,991 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 11:01:38,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 210 transitions, 464 flow [2023-09-01 11:01:39,049 INFO L130 PetriNetUnfolder]: 81/536 cut-off events. [2023-09-01 11:01:39,050 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:01:39,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 536 events. 81/536 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2018 event pairs, 6 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 371. Up to 32 conditions per place. [2023-09-01 11:01:39,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 210 transitions, 464 flow [2023-09-01 11:01:39,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 210 transitions, 464 flow [2023-09-01 11:01:39,060 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:39,060 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 210 transitions, 464 flow [2023-09-01 11:01:39,060 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 210 transitions, 464 flow [2023-09-01 11:01:39,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 210 transitions, 464 flow [2023-09-01 11:01:39,131 INFO L130 PetriNetUnfolder]: 81/536 cut-off events. [2023-09-01 11:01:39,131 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:01:39,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 536 events. 81/536 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2018 event pairs, 6 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 371. Up to 32 conditions per place. [2023-09-01 11:01:39,154 INFO L119 LiptonReduction]: Number of co-enabled transitions 24192 [2023-09-01 11:01:41,857 INFO L134 LiptonReduction]: Checked pairs total: 57171 [2023-09-01 11:01:41,858 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-09-01 11:01:41,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:41,861 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:41,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:41,871 INFO L130 PetriNetUnfolder]: 29/128 cut-off events. [2023-09-01 11:01:41,871 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 11:01:41,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:41,871 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:41,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:41,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:41,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1189301793, now seen corresponding path program 1 times [2023-09-01 11:01:41,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:41,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133618173] [2023-09-01 11:01:41,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:41,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:41,924 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:41,946 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:41,946 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:41,946 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:41,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 11:01:41,947 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:41,948 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:41,948 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:41,948 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 11:01:41,969 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 11:01:41,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 244 transitions, 548 flow [2023-09-01 11:01:42,082 INFO L130 PetriNetUnfolder]: 140/853 cut-off events. [2023-09-01 11:01:42,083 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:01:42,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 853 events. 140/853 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3708 event pairs, 23 based on Foata normal form. 0/723 useless extension candidates. Maximal degree in co-relation 581. Up to 80 conditions per place. [2023-09-01 11:01:42,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 244 transitions, 548 flow [2023-09-01 11:01:42,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 244 transitions, 548 flow [2023-09-01 11:01:42,104 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:42,104 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 244 transitions, 548 flow [2023-09-01 11:01:42,104 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 244 transitions, 548 flow [2023-09-01 11:01:42,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 244 transitions, 548 flow [2023-09-01 11:01:42,215 INFO L130 PetriNetUnfolder]: 140/853 cut-off events. [2023-09-01 11:01:42,215 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:01:42,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 853 events. 140/853 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3708 event pairs, 23 based on Foata normal form. 0/723 useless extension candidates. Maximal degree in co-relation 581. Up to 80 conditions per place. [2023-09-01 11:01:42,249 INFO L119 LiptonReduction]: Number of co-enabled transitions 35840 [2023-09-01 11:01:44,971 INFO L134 LiptonReduction]: Checked pairs total: 89844 [2023-09-01 11:01:44,971 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-09-01 11:01:44,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:44,973 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:44,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:44,985 INFO L130 PetriNetUnfolder]: 41/175 cut-off events. [2023-09-01 11:01:44,985 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 11:01:44,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:44,986 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:44,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:44,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1085263115, now seen corresponding path program 1 times [2023-09-01 11:01:44,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:44,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111902243] [2023-09-01 11:01:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:44,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:45,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:45,031 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:45,031 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:45,031 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:45,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 11:01:45,032 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:45,032 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:45,033 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:45,033 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 11:01:45,057 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 11:01:45,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 278 transitions, 634 flow [2023-09-01 11:01:45,272 INFO L130 PetriNetUnfolder]: 263/1442 cut-off events. [2023-09-01 11:01:45,272 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:01:45,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 1442 events. 263/1442 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7789 event pairs, 72 based on Foata normal form. 0/1236 useless extension candidates. Maximal degree in co-relation 952. Up to 192 conditions per place. [2023-09-01 11:01:45,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 278 transitions, 634 flow [2023-09-01 11:01:45,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 278 transitions, 634 flow [2023-09-01 11:01:45,312 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:45,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 278 transitions, 634 flow [2023-09-01 11:01:45,316 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 278 transitions, 634 flow [2023-09-01 11:01:45,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 278 transitions, 634 flow [2023-09-01 11:01:45,519 INFO L130 PetriNetUnfolder]: 263/1442 cut-off events. [2023-09-01 11:01:45,519 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:01:45,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 1442 events. 263/1442 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7789 event pairs, 72 based on Foata normal form. 0/1236 useless extension candidates. Maximal degree in co-relation 952. Up to 192 conditions per place. [2023-09-01 11:01:45,593 INFO L119 LiptonReduction]: Number of co-enabled transitions 49728 [2023-09-01 11:01:48,491 INFO L134 LiptonReduction]: Checked pairs total: 125050 [2023-09-01 11:01:48,491 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-09-01 11:01:48,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:48,493 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:48,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:48,511 INFO L130 PetriNetUnfolder]: 56/233 cut-off events. [2023-09-01 11:01:48,512 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 11:01:48,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:48,512 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:48,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:48,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:48,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1635017087, now seen corresponding path program 1 times [2023-09-01 11:01:48,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:48,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986109770] [2023-09-01 11:01:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:48,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:48,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:48,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:48,600 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:48,601 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:48,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 11:01:48,601 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:48,603 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:48,603 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:48,603 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 11:01:48,645 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 11:01:48,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 312 transitions, 722 flow [2023-09-01 11:01:49,098 INFO L130 PetriNetUnfolder]: 530/2591 cut-off events. [2023-09-01 11:01:49,099 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:01:49,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 2591 events. 530/2591 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16907 event pairs, 201 based on Foata normal form. 0/2245 useless extension candidates. Maximal degree in co-relation 1660. Up to 448 conditions per place. [2023-09-01 11:01:49,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 312 transitions, 722 flow [2023-09-01 11:01:49,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 312 transitions, 722 flow [2023-09-01 11:01:49,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:49,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 312 transitions, 722 flow [2023-09-01 11:01:49,255 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 312 transitions, 722 flow [2023-09-01 11:01:49,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 312 transitions, 722 flow [2023-09-01 11:01:49,735 INFO L130 PetriNetUnfolder]: 530/2591 cut-off events. [2023-09-01 11:01:49,736 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:01:49,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 2591 events. 530/2591 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16907 event pairs, 201 based on Foata normal form. 0/2245 useless extension candidates. Maximal degree in co-relation 1660. Up to 448 conditions per place. [2023-09-01 11:01:49,877 INFO L119 LiptonReduction]: Number of co-enabled transitions 65856 [2023-09-01 11:01:52,929 INFO L134 LiptonReduction]: Checked pairs total: 168628 [2023-09-01 11:01:52,929 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-09-01 11:01:52,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:52,931 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:52,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:52,957 INFO L130 PetriNetUnfolder]: 76/309 cut-off events. [2023-09-01 11:01:52,957 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 11:01:52,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:52,958 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:52,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:52,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:52,958 INFO L85 PathProgramCache]: Analyzing trace with hash 622020831, now seen corresponding path program 1 times [2023-09-01 11:01:52,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:52,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876302676] [2023-09-01 11:01:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:52,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:52,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:53,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:53,001 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:53,001 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:53,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 11:01:53,002 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:53,002 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:53,002 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:53,002 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 11:01:53,028 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 11:01:53,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 346 transitions, 812 flow [2023-09-01 11:01:54,116 INFO L130 PetriNetUnfolder]: 1117/4892 cut-off events. [2023-09-01 11:01:54,116 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:01:54,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5977 conditions, 4892 events. 1117/4892 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 38032 event pairs, 522 based on Foata normal form. 0/4278 useless extension candidates. Maximal degree in co-relation 3073. Up to 1024 conditions per place. [2023-09-01 11:01:54,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 346 transitions, 812 flow [2023-09-01 11:01:54,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 346 transitions, 812 flow [2023-09-01 11:01:54,256 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:54,256 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 346 transitions, 812 flow [2023-09-01 11:01:54,256 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 346 transitions, 812 flow [2023-09-01 11:01:54,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 346 transitions, 812 flow [2023-09-01 11:01:55,392 INFO L130 PetriNetUnfolder]: 1117/4892 cut-off events. [2023-09-01 11:01:55,392 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:01:55,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5977 conditions, 4892 events. 1117/4892 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 38032 event pairs, 522 based on Foata normal form. 0/4278 useless extension candidates. Maximal degree in co-relation 3073. Up to 1024 conditions per place. [2023-09-01 11:01:55,592 INFO L119 LiptonReduction]: Number of co-enabled transitions 84224 [2023-09-01 11:01:58,687 INFO L134 LiptonReduction]: Checked pairs total: 221885 [2023-09-01 11:01:58,687 INFO L136 LiptonReduction]: Total number of compositions: 227 [2023-09-01 11:01:58,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:58,689 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:58,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:58,730 INFO L130 PetriNetUnfolder]: 105/413 cut-off events. [2023-09-01 11:01:58,730 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 11:01:58,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:58,731 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:58,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:58,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:58,731 INFO L85 PathProgramCache]: Analyzing trace with hash -272912286, now seen corresponding path program 1 times [2023-09-01 11:01:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:58,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72475843] [2023-09-01 11:01:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:58,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:58,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:58,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:58,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:58,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:58,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 11:01:58,778 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:58,778 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:58,778 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:58,779 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 11:01:58,813 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 11:01:58,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 380 transitions, 904 flow [2023-09-01 11:02:00,719 INFO L130 PetriNetUnfolder]: 2408/9561 cut-off events. [2023-09-01 11:02:00,719 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:02:00,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11938 conditions, 9561 events. 2408/9561 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86048 event pairs, 1291 based on Foata normal form. 0/8423 useless extension candidates. Maximal degree in co-relation 5959. Up to 2304 conditions per place. [2023-09-01 11:02:00,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 380 transitions, 904 flow [2023-09-01 11:02:00,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 380 transitions, 904 flow [2023-09-01 11:02:00,947 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:02:00,947 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 380 transitions, 904 flow [2023-09-01 11:02:00,947 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 380 transitions, 904 flow [2023-09-01 11:02:00,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 380 transitions, 904 flow [2023-09-01 11:02:02,799 INFO L130 PetriNetUnfolder]: 2408/9561 cut-off events. [2023-09-01 11:02:02,800 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:02:02,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11938 conditions, 9561 events. 2408/9561 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86048 event pairs, 1291 based on Foata normal form. 0/8423 useless extension candidates. Maximal degree in co-relation 5959. Up to 2304 conditions per place. [2023-09-01 11:02:03,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 104832 [2023-09-01 11:02:06,695 INFO L134 LiptonReduction]: Checked pairs total: 307817 [2023-09-01 11:02:06,695 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-09-01 11:02:06,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:02:06,697 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:02:06,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:02:06,746 INFO L130 PetriNetUnfolder]: 150/563 cut-off events. [2023-09-01 11:02:06,746 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 11:02:06,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:02:06,746 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:02:06,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:02:06,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:02:06,747 INFO L85 PathProgramCache]: Analyzing trace with hash -526774357, now seen corresponding path program 1 times [2023-09-01 11:02:06,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:02:06,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160392604] [2023-09-01 11:02:06,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:02:06,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:02:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:06,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:02:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:06,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:02:06,847 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:02:06,848 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:02:06,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 11:02:06,848 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:02:06,848 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:02:06,849 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:02:06,849 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 11:02:06,888 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 11:02:06,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 414 transitions, 998 flow [2023-09-01 11:02:10,973 INFO L130 PetriNetUnfolder]: 5235/19094 cut-off events. [2023-09-01 11:02:10,974 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:02:11,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24300 conditions, 19094 events. 5235/19094 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 194588 event pairs, 3084 based on Foata normal form. 0/16920 useless extension candidates. Maximal degree in co-relation 11918. Up to 5120 conditions per place. [2023-09-01 11:02:11,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 360 places, 414 transitions, 998 flow [2023-09-01 11:02:11,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 360 places, 414 transitions, 998 flow [2023-09-01 11:02:11,905 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:02:11,905 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 360 places, 414 transitions, 998 flow [2023-09-01 11:02:11,905 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 360 places, 414 transitions, 998 flow [2023-09-01 11:02:11,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 414 transitions, 998 flow [2023-09-01 11:02:15,985 INFO L130 PetriNetUnfolder]: 5235/19094 cut-off events. [2023-09-01 11:02:15,985 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:02:16,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24300 conditions, 19094 events. 5235/19094 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 194588 event pairs, 3084 based on Foata normal form. 0/16920 useless extension candidates. Maximal degree in co-relation 11918. Up to 5120 conditions per place. [2023-09-01 11:02:17,103 INFO L119 LiptonReduction]: Number of co-enabled transitions 127680 [2023-09-01 11:02:20,449 INFO L134 LiptonReduction]: Checked pairs total: 339733 [2023-09-01 11:02:20,450 INFO L136 LiptonReduction]: Total number of compositions: 264 [2023-09-01 11:02:20,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:02:20,452 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:02:20,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:02:20,511 INFO L130 PetriNetUnfolder]: 224/788 cut-off events. [2023-09-01 11:02:20,512 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 11:02:20,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:02:20,512 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:02:20,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:02:20,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:02:20,513 INFO L85 PathProgramCache]: Analyzing trace with hash -373908253, now seen corresponding path program 1 times [2023-09-01 11:02:20,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:02:20,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368294237] [2023-09-01 11:02:20,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:02:20,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:02:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:20,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:02:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:20,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:02:20,556 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:02:20,556 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:02:20,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 11:02:20,556 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:02:20,557 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:02:20,557 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:02:20,557 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 11:02:20,586 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 11:02:20,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 448 transitions, 1094 flow [2023-09-01 11:02:29,671 INFO L130 PetriNetUnfolder]: 11390/38611 cut-off events. [2023-09-01 11:02:29,671 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:02:30,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49975 conditions, 38611 events. 11390/38611 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 440440 event pairs, 7181 based on Foata normal form. 0/34377 useless extension candidates. Maximal degree in co-relation 24278. Up to 11264 conditions per place. [2023-09-01 11:02:30,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 389 places, 448 transitions, 1094 flow [2023-09-01 11:02:31,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 448 transitions, 1094 flow [2023-09-01 11:02:31,339 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:02:31,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 448 transitions, 1094 flow [2023-09-01 11:02:31,340 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 448 transitions, 1094 flow [2023-09-01 11:02:31,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 448 transitions, 1094 flow [2023-09-01 11:02:40,364 INFO L130 PetriNetUnfolder]: 11390/38611 cut-off events. [2023-09-01 11:02:40,365 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:02:41,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49975 conditions, 38611 events. 11390/38611 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 440440 event pairs, 7181 based on Foata normal form. 0/34377 useless extension candidates. Maximal degree in co-relation 24278. Up to 11264 conditions per place. [2023-09-01 11:02:42,933 INFO L119 LiptonReduction]: Number of co-enabled transitions 152768 [2023-09-01 11:02:46,453 INFO L134 LiptonReduction]: Checked pairs total: 454236 [2023-09-01 11:02:46,453 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-09-01 11:02:46,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:02:46,455 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:02:46,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:02:46,559 INFO L130 PetriNetUnfolder]: 349/1134 cut-off events. [2023-09-01 11:02:46,559 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 11:02:46,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:02:46,560 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:02:46,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:02:46,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:02:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash -544787279, now seen corresponding path program 1 times [2023-09-01 11:02:46,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:02:46,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772053561] [2023-09-01 11:02:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:02:46,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:02:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:46,581 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:02:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:46,601 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:02:46,601 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:02:46,602 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:02:46,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 11:02:46,602 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:02:46,603 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:02:46,603 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:02:46,603 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 11:02:46,634 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 11:02:46,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 482 transitions, 1192 flow [2023-09-01 11:03:06,666 INFO L130 PetriNetUnfolder]: 24713/78608 cut-off events. [2023-09-01 11:03:06,666 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:03:10,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103299 conditions, 78608 events. 24713/78608 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 976378 event pairs, 16398 based on Foata normal form. 0/70266 useless extension candidates. Maximal degree in co-relation 49951. Up to 24576 conditions per place. [2023-09-01 11:03:10,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 418 places, 482 transitions, 1192 flow [2023-09-01 11:03:12,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 418 places, 482 transitions, 1192 flow [2023-09-01 11:03:12,087 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:03:12,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 418 places, 482 transitions, 1192 flow [2023-09-01 11:03:12,088 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 418 places, 482 transitions, 1192 flow [2023-09-01 11:03:12,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 482 transitions, 1192 flow [2023-09-01 11:03:33,709 INFO L130 PetriNetUnfolder]: 24713/78608 cut-off events. [2023-09-01 11:03:33,710 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:03:38,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103299 conditions, 78608 events. 24713/78608 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 976378 event pairs, 16398 based on Foata normal form. 0/70266 useless extension candidates. Maximal degree in co-relation 49951. Up to 24576 conditions per place. [2023-09-01 11:03:43,528 INFO L119 LiptonReduction]: Number of co-enabled transitions 180096 [2023-09-01 11:03:47,311 INFO L134 LiptonReduction]: Checked pairs total: 472539 [2023-09-01 11:03:47,311 INFO L136 LiptonReduction]: Total number of compositions: 298 [2023-09-01 11:03:47,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:03:47,313 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:03:47,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:03:47,473 INFO L130 PetriNetUnfolder]: 560/1673 cut-off events. [2023-09-01 11:03:47,474 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 11:03:47,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:03:47,474 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:03:47,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:03:47,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:03:47,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1062026947, now seen corresponding path program 1 times [2023-09-01 11:03:47,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:03:47,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908905194] [2023-09-01 11:03:47,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:03:47,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:03:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:47,499 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:03:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:47,519 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:03:47,520 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:03:47,520 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:03:47,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 11:03:47,520 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:03:47,521 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:03:47,521 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:03:47,521 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 11:03:47,555 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 11:03:47,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 516 transitions, 1292 flow [2023-09-01 11:04:33,331 INFO L130 PetriNetUnfolder]: 53396/160589 cut-off events. [2023-09-01 11:04:33,332 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:04:45,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213968 conditions, 160589 events. 53396/160589 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2160998 event pairs, 36879 based on Foata normal form. 0/144043 useless extension candidates. Maximal degree in co-relation 103273. Up to 53248 conditions per place. [2023-09-01 11:04:45,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 447 places, 516 transitions, 1292 flow [2023-09-01 11:04:49,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 516 transitions, 1292 flow [2023-09-01 11:04:49,373 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:49,374 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 447 places, 516 transitions, 1292 flow [2023-09-01 11:04:49,374 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 447 places, 516 transitions, 1292 flow [2023-09-01 11:04:49,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 516 transitions, 1292 flow [2023-09-01 11:05:38,748 INFO L130 PetriNetUnfolder]: 53396/160589 cut-off events. [2023-09-01 11:05:38,749 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:05:48,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213968 conditions, 160589 events. 53396/160589 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2160998 event pairs, 36879 based on Foata normal form. 0/144043 useless extension candidates. Maximal degree in co-relation 103273. Up to 53248 conditions per place. [2023-09-01 11:06:06,600 INFO L119 LiptonReduction]: Number of co-enabled transitions 209664 [2023-09-01 11:06:10,591 INFO L134 LiptonReduction]: Checked pairs total: 539829 [2023-09-01 11:06:10,592 INFO L136 LiptonReduction]: Total number of compositions: 317 [2023-09-01 11:06:10,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:06:10,593 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;@7f22257f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:06:10,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:06:10,828 INFO L130 PetriNetUnfolder]: 913/2517 cut-off events. [2023-09-01 11:06:10,828 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 11:06:10,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:06:10,829 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 11:06:10,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:06:10,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:06:10,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1854885235, now seen corresponding path program 1 times [2023-09-01 11:06:10,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:06:10,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979483120] [2023-09-01 11:06:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:06:10,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:06:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:10,858 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:06:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:10,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:06:10,881 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:06:10,881 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:06:10,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 11:06:10,881 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:06:10,882 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:06:10,882 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:06:10,882 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 11:06:10,919 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 11:06:10,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 476 places, 550 transitions, 1394 flow