./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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_28-funptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-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 ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --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 [2023-08-31 20:52:32,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:52:32,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:52:32,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:52:32,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:52:32,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:52:32,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:52:32,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:52:32,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:52:32,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:52:32,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:52:32,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:52:32,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:52:32,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:52:32,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:52:32,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:52:32,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:52:32,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:52:32,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:52:32,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:52:32,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:52:32,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:52:32,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:52:32,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:52:32,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:52:32,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:52:32,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:52:32,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:52:32,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:52:32,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:52:32,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:52:32,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:52:32,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:52:32,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:52:32,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:52:32,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:52:32,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:52:32,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:52:32,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:52:32,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:52:32,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:52:32,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:52:32,506 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:52:32,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:52:32,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:52:32,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:52:32,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:52:32,509 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:52:32,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:52:32,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:52:32,510 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:52:32,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:52:32,512 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:52:32,512 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:52:32,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:52:32,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:52:32,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:52:32,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:52:32,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:52:32,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:52:32,513 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:52:32,514 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:52:32,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:52:32,514 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:52:32,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:52:32,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:52:32,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:52:32,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:52:32,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:52:32,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:52:32,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:52:32,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:52:32,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:52:32,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:52:32,517 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:52:32,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:52:32,517 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:52:32,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:52:32,518 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:52:32,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:52:32,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:52:32,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:52:32,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:52:32,868 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:52:32,868 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:52:32,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-08-31 20:52:33,932 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:52:34,197 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:52:34,198 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-08-31 20:52:34,210 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f55c4289/2cc85191001f40aa86862e65e8c55142/FLAGde74bd95d [2023-08-31 20:52:34,227 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f55c4289/2cc85191001f40aa86862e65e8c55142 [2023-08-31 20:52:34,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:52:34,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:52:34,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:52:34,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:52:34,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:52:34,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:34,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e4a921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34, skipping insertion in model container [2023-08-31 20:52:34,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:34,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:52:34,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:52:34,760 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_28-funptr_racefree.i[41323,41336] [2023-08-31 20:52:34,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:52:34,808 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:52:34,856 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_28-funptr_racefree.i[41323,41336] [2023-08-31 20:52:34,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:52:34,958 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 20:52:34,964 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:52:34,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34 WrapperNode [2023-08-31 20:52:34,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:52:34,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:52:34,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:52:34,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:52:34,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:35,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:35,038 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2023-08-31 20:52:35,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:52:35,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:52:35,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:52:35,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:52:35,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:35,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:35,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:35,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:35,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:35,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:35,079 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:35,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:35,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:52:35,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:52:35,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:52:35,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:52:35,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34" (1/1) ... [2023-08-31 20:52:35,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:52:35,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:52:35,116 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) [2023-08-31 20:52:35,118 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 [2023-08-31 20:52:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:52:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:52:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:52:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:52:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:52:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:52:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:52:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:52:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:52:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:52:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:52:35,146 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 20:52:35,304 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:52:35,306 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:52:35,659 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:52:35,667 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:52:35,667 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-31 20:52:35,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:52:35 BoogieIcfgContainer [2023-08-31 20:52:35,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:52:35,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:52:35,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:52:35,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:52:35,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:52:34" (1/3) ... [2023-08-31 20:52:35,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220bab5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:52:35, skipping insertion in model container [2023-08-31 20:52:35,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:52:34" (2/3) ... [2023-08-31 20:52:35,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220bab5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:52:35, skipping insertion in model container [2023-08-31 20:52:35,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:52:35" (3/3) ... [2023-08-31 20:52:35,677 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2023-08-31 20:52:35,684 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:52:35,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:52:35,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 20:52:35,693 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:52:35,771 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:52:35,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 151 transitions, 310 flow [2023-08-31 20:52:35,904 INFO L130 PetriNetUnfolder]: 17/201 cut-off events. [2023-08-31 20:52:35,906 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:52:35,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 201 events. 17/201 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 558 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-31 20:52:35,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 151 transitions, 310 flow [2023-08-31 20:52:35,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 146 transitions, 297 flow [2023-08-31 20:52:35,921 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:52:35,931 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 146 transitions, 297 flow [2023-08-31 20:52:35,933 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 146 transitions, 297 flow [2023-08-31 20:52:35,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 146 transitions, 297 flow [2023-08-31 20:52:35,977 INFO L130 PetriNetUnfolder]: 16/196 cut-off events. [2023-08-31 20:52:35,977 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:52:35,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 196 events. 16/196 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 557 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-31 20:52:35,982 INFO L119 LiptonReduction]: Number of co-enabled transitions 6160 [2023-08-31 20:52:39,020 INFO L134 LiptonReduction]: Checked pairs total: 18104 [2023-08-31 20:52:39,020 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-31 20:52:39,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:52:39,038 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;@6ff0d9bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:52:39,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:52:39,043 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2023-08-31 20:52:39,043 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:52:39,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:52:39,044 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:52:39,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:52:39,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:52:39,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1136617705, now seen corresponding path program 1 times [2023-08-31 20:52:39,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:52:39,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080211295] [2023-08-31 20:52:39,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:52:39,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:52:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:39,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:52:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:39,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:52:39,260 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:52:39,261 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:52:39,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:52:39,263 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:52:39,265 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:52:39,266 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:52:39,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:52:39,315 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:52:39,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 208 transitions, 434 flow [2023-08-31 20:52:39,405 INFO L130 PetriNetUnfolder]: 31/338 cut-off events. [2023-08-31 20:52:39,406 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:52:39,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 338 events. 31/338 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1192 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-08-31 20:52:39,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 208 transitions, 434 flow [2023-08-31 20:52:39,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 208 transitions, 434 flow [2023-08-31 20:52:39,416 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:52:39,416 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 208 transitions, 434 flow [2023-08-31 20:52:39,417 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 208 transitions, 434 flow [2023-08-31 20:52:39,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 208 transitions, 434 flow [2023-08-31 20:52:39,454 INFO L130 PetriNetUnfolder]: 31/338 cut-off events. [2023-08-31 20:52:39,455 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:52:39,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 338 events. 31/338 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1192 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-08-31 20:52:39,470 INFO L119 LiptonReduction]: Number of co-enabled transitions 19580 [2023-08-31 20:52:42,497 INFO L134 LiptonReduction]: Checked pairs total: 72112 [2023-08-31 20:52:42,497 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-31 20:52:42,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:52:42,501 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;@6ff0d9bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:52:42,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:52:42,506 INFO L130 PetriNetUnfolder]: 1/50 cut-off events. [2023-08-31 20:52:42,506 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 20:52:42,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:52:42,507 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:52:42,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:52:42,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:52:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1772997356, now seen corresponding path program 1 times [2023-08-31 20:52:42,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:52:42,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735568756] [2023-08-31 20:52:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:52:42,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:52:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:42,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:52:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:42,567 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:52:42,567 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:52:42,567 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:52:42,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:52:42,568 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:52:42,569 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:52:42,569 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:52:42,570 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:52:42,597 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:52:42,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 265 transitions, 560 flow [2023-08-31 20:52:42,671 INFO L130 PetriNetUnfolder]: 50/518 cut-off events. [2023-08-31 20:52:42,671 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:52:42,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 518 events. 50/518 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2136 event pairs, 1 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 346. Up to 16 conditions per place. [2023-08-31 20:52:42,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 265 transitions, 560 flow [2023-08-31 20:52:42,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 265 transitions, 560 flow [2023-08-31 20:52:42,681 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:52:42,681 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 265 transitions, 560 flow [2023-08-31 20:52:42,682 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 265 transitions, 560 flow [2023-08-31 20:52:42,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 265 transitions, 560 flow [2023-08-31 20:52:42,742 INFO L130 PetriNetUnfolder]: 50/518 cut-off events. [2023-08-31 20:52:42,743 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:52:42,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 518 events. 50/518 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2136 event pairs, 1 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 346. Up to 16 conditions per place. [2023-08-31 20:52:42,768 INFO L119 LiptonReduction]: Number of co-enabled transitions 38940 [2023-08-31 20:52:45,767 INFO L134 LiptonReduction]: Checked pairs total: 158644 [2023-08-31 20:52:45,768 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-08-31 20:52:45,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:52:45,771 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;@6ff0d9bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:52:45,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:52:45,779 INFO L130 PetriNetUnfolder]: 6/97 cut-off events. [2023-08-31 20:52:45,779 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:52:45,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:52:45,780 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:52:45,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:52:45,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:52:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash 307453833, now seen corresponding path program 1 times [2023-08-31 20:52:45,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:52:45,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321373063] [2023-08-31 20:52:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:52:45,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:52:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:45,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:52:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:45,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:52:45,834 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:52:45,834 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:52:45,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:52:45,834 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:52:45,835 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:52:45,835 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:52:45,835 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:52:45,863 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:52:45,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 322 transitions, 688 flow [2023-08-31 20:52:45,993 INFO L130 PetriNetUnfolder]: 81/786 cut-off events. [2023-08-31 20:52:45,993 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:52:46,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 786 events. 81/786 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3559 event pairs, 6 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 538. Up to 32 conditions per place. [2023-08-31 20:52:46,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 322 transitions, 688 flow [2023-08-31 20:52:46,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 322 transitions, 688 flow [2023-08-31 20:52:46,013 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:52:46,013 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 322 transitions, 688 flow [2023-08-31 20:52:46,013 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 322 transitions, 688 flow [2023-08-31 20:52:46,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 322 transitions, 688 flow [2023-08-31 20:52:46,154 INFO L130 PetriNetUnfolder]: 81/786 cut-off events. [2023-08-31 20:52:46,154 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:52:46,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 786 events. 81/786 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3559 event pairs, 6 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 538. Up to 32 conditions per place. [2023-08-31 20:52:46,191 INFO L119 LiptonReduction]: Number of co-enabled transitions 64680 [2023-08-31 20:52:49,504 INFO L134 LiptonReduction]: Checked pairs total: 308976 [2023-08-31 20:52:49,504 INFO L136 LiptonReduction]: Total number of compositions: 175 [2023-08-31 20:52:49,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:52:49,507 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;@6ff0d9bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:52:49,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:52:49,518 INFO L130 PetriNetUnfolder]: 15/157 cut-off events. [2023-08-31 20:52:49,519 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:52:49,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:52:49,519 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:52:49,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:52:49,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:52:49,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1020735411, now seen corresponding path program 1 times [2023-08-31 20:52:49,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:52:49,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457212199] [2023-08-31 20:52:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:52:49,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:52:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:49,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:52:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:49,567 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:52:49,567 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:52:49,567 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:52:49,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:52:49,568 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:52:49,568 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:52:49,568 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:52:49,569 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:52:49,605 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:52:49,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 379 transitions, 818 flow [2023-08-31 20:52:49,853 INFO L130 PetriNetUnfolder]: 140/1234 cut-off events. [2023-08-31 20:52:49,853 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:52:49,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 1234 events. 140/1234 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 6387 event pairs, 23 based on Foata normal form. 0/1041 useless extension candidates. Maximal degree in co-relation 831. Up to 80 conditions per place. [2023-08-31 20:52:49,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 379 transitions, 818 flow [2023-08-31 20:52:49,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 350 places, 379 transitions, 818 flow [2023-08-31 20:52:49,888 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:52:49,888 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 350 places, 379 transitions, 818 flow [2023-08-31 20:52:49,888 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 350 places, 379 transitions, 818 flow [2023-08-31 20:52:49,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 379 transitions, 818 flow [2023-08-31 20:52:50,116 INFO L130 PetriNetUnfolder]: 140/1234 cut-off events. [2023-08-31 20:52:50,116 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:52:50,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 1234 events. 140/1234 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 6387 event pairs, 23 based on Foata normal form. 0/1041 useless extension candidates. Maximal degree in co-relation 831. Up to 80 conditions per place. [2023-08-31 20:52:50,224 INFO L119 LiptonReduction]: Number of co-enabled transitions 96800 [2023-08-31 20:52:53,677 INFO L134 LiptonReduction]: Checked pairs total: 414959 [2023-08-31 20:52:53,678 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-08-31 20:52:53,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:52:53,680 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;@6ff0d9bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:52:53,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:52:53,699 INFO L130 PetriNetUnfolder]: 25/220 cut-off events. [2023-08-31 20:52:53,699 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 20:52:53,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:52:53,699 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:52:53,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:52:53,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:52:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash 177521004, now seen corresponding path program 1 times [2023-08-31 20:52:53,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:52:53,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803190743] [2023-08-31 20:52:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:52:53,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:52:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:53,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:52:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:53,746 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:52:53,746 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:52:53,746 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:52:53,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:52:53,747 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:52:53,747 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:52:53,747 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:52:53,748 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:52:53,777 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:52:53,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 436 transitions, 950 flow [2023-08-31 20:52:54,234 INFO L130 PetriNetUnfolder]: 263/2050 cut-off events. [2023-08-31 20:52:54,235 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:52:54,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2282 conditions, 2050 events. 263/2050 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 12696 event pairs, 72 based on Foata normal form. 0/1743 useless extension candidates. Maximal degree in co-relation 1333. Up to 192 conditions per place. [2023-08-31 20:52:54,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 402 places, 436 transitions, 950 flow [2023-08-31 20:52:54,342 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 436 transitions, 950 flow [2023-08-31 20:52:54,343 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:52:54,343 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 402 places, 436 transitions, 950 flow [2023-08-31 20:52:54,344 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 402 places, 436 transitions, 950 flow [2023-08-31 20:52:54,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 436 transitions, 950 flow [2023-08-31 20:52:54,833 INFO L130 PetriNetUnfolder]: 263/2050 cut-off events. [2023-08-31 20:52:54,833 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:52:54,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2282 conditions, 2050 events. 263/2050 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 12696 event pairs, 72 based on Foata normal form. 0/1743 useless extension candidates. Maximal degree in co-relation 1333. Up to 192 conditions per place. [2023-08-31 20:52:54,982 INFO L119 LiptonReduction]: Number of co-enabled transitions 135300 [2023-08-31 20:52:58,571 INFO L134 LiptonReduction]: Checked pairs total: 594341 [2023-08-31 20:52:58,572 INFO L136 LiptonReduction]: Total number of compositions: 226 [2023-08-31 20:52:58,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:52:58,574 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;@6ff0d9bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:52:58,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:52:58,599 INFO L130 PetriNetUnfolder]: 35/286 cut-off events. [2023-08-31 20:52:58,599 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-31 20:52:58,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:52:58,600 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:52:58,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:52:58,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:52:58,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1642643847, now seen corresponding path program 1 times [2023-08-31 20:52:58,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:52:58,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453888877] [2023-08-31 20:52:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:52:58,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:52:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:58,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:52:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:58,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:52:58,647 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:52:58,647 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:52:58,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:52:58,647 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:52:58,648 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:52:58,648 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:52:58,648 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:52:58,679 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:52:58,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 454 places, 493 transitions, 1084 flow [2023-08-31 20:52:59,769 INFO L130 PetriNetUnfolder]: 530/3618 cut-off events. [2023-08-31 20:52:59,769 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:52:59,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4116 conditions, 3618 events. 530/3618 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 26463 event pairs, 201 based on Foata normal form. 0/3101 useless extension candidates. Maximal degree in co-relation 2268. Up to 448 conditions per place. [2023-08-31 20:52:59,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 454 places, 493 transitions, 1084 flow [2023-08-31 20:52:59,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 454 places, 493 transitions, 1084 flow [2023-08-31 20:52:59,879 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:52:59,879 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 454 places, 493 transitions, 1084 flow [2023-08-31 20:52:59,879 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 454 places, 493 transitions, 1084 flow [2023-08-31 20:52:59,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 454 places, 493 transitions, 1084 flow [2023-08-31 20:53:01,078 INFO L130 PetriNetUnfolder]: 530/3618 cut-off events. [2023-08-31 20:53:01,078 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:53:01,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4116 conditions, 3618 events. 530/3618 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 26463 event pairs, 201 based on Foata normal form. 0/3101 useless extension candidates. Maximal degree in co-relation 2268. Up to 448 conditions per place. [2023-08-31 20:53:01,392 INFO L119 LiptonReduction]: Number of co-enabled transitions 180180 [2023-08-31 20:53:05,120 INFO L134 LiptonReduction]: Checked pairs total: 806167 [2023-08-31 20:53:05,120 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-08-31 20:53:05,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:05,122 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;@6ff0d9bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:05,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:05,153 INFO L130 PetriNetUnfolder]: 46/359 cut-off events. [2023-08-31 20:53:05,153 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2023-08-31 20:53:05,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:05,153 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:53:05,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:05,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:05,154 INFO L85 PathProgramCache]: Analyzing trace with hash 117543122, now seen corresponding path program 1 times [2023-08-31 20:53:05,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:05,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23126812] [2023-08-31 20:53:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:05,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:05,176 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:05,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:05,198 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:05,198 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:05,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:53:05,198 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:05,199 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:05,199 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:05,199 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:53:05,233 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:53:05,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 506 places, 550 transitions, 1220 flow [2023-08-31 20:53:06,976 INFO L130 PetriNetUnfolder]: 1117/6722 cut-off events. [2023-08-31 20:53:06,976 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:53:07,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7807 conditions, 6722 events. 1117/6722 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 57872 event pairs, 522 based on Foata normal form. 0/5803 useless extension candidates. Maximal degree in co-relation 4100. Up to 1024 conditions per place. [2023-08-31 20:53:07,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 506 places, 550 transitions, 1220 flow [2023-08-31 20:53:07,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 506 places, 550 transitions, 1220 flow [2023-08-31 20:53:07,265 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:07,265 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 506 places, 550 transitions, 1220 flow [2023-08-31 20:53:07,266 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 506 places, 550 transitions, 1220 flow [2023-08-31 20:53:07,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 506 places, 550 transitions, 1220 flow [2023-08-31 20:53:08,889 INFO L130 PetriNetUnfolder]: 1117/6722 cut-off events. [2023-08-31 20:53:08,889 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:53:09,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7807 conditions, 6722 events. 1117/6722 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 57872 event pairs, 522 based on Foata normal form. 0/5803 useless extension candidates. Maximal degree in co-relation 4100. Up to 1024 conditions per place. [2023-08-31 20:53:09,498 INFO L119 LiptonReduction]: Number of co-enabled transitions 231440 [2023-08-31 20:53:13,343 INFO L134 LiptonReduction]: Checked pairs total: 1039786 [2023-08-31 20:53:13,344 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-08-31 20:53:13,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:13,346 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;@6ff0d9bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:13,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:13,395 INFO L130 PetriNetUnfolder]: 59/440 cut-off events. [2023-08-31 20:53:13,395 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2023-08-31 20:53:13,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:13,395 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:53:13,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:13,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:13,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1226522747, now seen corresponding path program 1 times [2023-08-31 20:53:13,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:13,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347007057] [2023-08-31 20:53:13,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:13,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:13,418 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:13,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:13,440 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:13,440 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:13,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:53:13,440 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:13,441 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:13,441 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:13,441 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:53:13,478 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:53:13,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 558 places, 607 transitions, 1358 flow [2023-08-31 20:53:17,068 INFO L130 PetriNetUnfolder]: 2408/12962 cut-off events. [2023-08-31 20:53:17,069 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:53:17,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15339 conditions, 12962 events. 2408/12962 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 130498 event pairs, 1291 based on Foata normal form. 0/11257 useless extension candidates. Maximal degree in co-relation 7789. Up to 2304 conditions per place. [2023-08-31 20:53:17,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 558 places, 607 transitions, 1358 flow [2023-08-31 20:53:17,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 558 places, 607 transitions, 1358 flow [2023-08-31 20:53:17,421 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:17,421 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 558 places, 607 transitions, 1358 flow [2023-08-31 20:53:17,421 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 558 places, 607 transitions, 1358 flow [2023-08-31 20:53:17,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 558 places, 607 transitions, 1358 flow [2023-08-31 20:53:21,146 INFO L130 PetriNetUnfolder]: 2408/12962 cut-off events. [2023-08-31 20:53:21,147 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:53:21,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15339 conditions, 12962 events. 2408/12962 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 130498 event pairs, 1291 based on Foata normal form. 0/11257 useless extension candidates. Maximal degree in co-relation 7789. Up to 2304 conditions per place. [2023-08-31 20:53:22,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 289080 [2023-08-31 20:53:26,317 INFO L134 LiptonReduction]: Checked pairs total: 1318368 [2023-08-31 20:53:26,317 INFO L136 LiptonReduction]: Total number of compositions: 305 [2023-08-31 20:53:26,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:26,319 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;@6ff0d9bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:26,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:26,409 INFO L130 PetriNetUnfolder]: 75/530 cut-off events. [2023-08-31 20:53:26,409 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2023-08-31 20:53:26,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:26,410 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:53:26,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:26,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash -304595946, now seen corresponding path program 1 times [2023-08-31 20:53:26,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:26,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143748463] [2023-08-31 20:53:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:26,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:26,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:26,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:26,487 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:26,487 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:26,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:53:26,488 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:26,490 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:26,490 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:26,490 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:53:26,537 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:53:26,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 610 places, 664 transitions, 1498 flow [2023-08-31 20:53:34,476 INFO L130 PetriNetUnfolder]: 5235/25602 cut-off events. [2023-08-31 20:53:34,476 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:53:34,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30808 conditions, 25602 events. 5235/25602 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 288069 event pairs, 3084 based on Foata normal form. 0/22343 useless extension candidates. Maximal degree in co-relation 15319. Up to 5120 conditions per place. [2023-08-31 20:53:34,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 610 places, 664 transitions, 1498 flow [2023-08-31 20:53:35,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 610 places, 664 transitions, 1498 flow [2023-08-31 20:53:35,273 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:35,273 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 610 places, 664 transitions, 1498 flow [2023-08-31 20:53:35,273 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 610 places, 664 transitions, 1498 flow [2023-08-31 20:53:35,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 610 places, 664 transitions, 1498 flow [2023-08-31 20:53:43,319 INFO L130 PetriNetUnfolder]: 5235/25602 cut-off events. [2023-08-31 20:53:43,320 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:53:43,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30808 conditions, 25602 events. 5235/25602 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 288069 event pairs, 3084 based on Foata normal form. 0/22343 useless extension candidates. Maximal degree in co-relation 15319. Up to 5120 conditions per place. [2023-08-31 20:53:45,783 INFO L119 LiptonReduction]: Number of co-enabled transitions 353100 [2023-08-31 20:53:50,050 INFO L134 LiptonReduction]: Checked pairs total: 1608878 [2023-08-31 20:53:50,050 INFO L136 LiptonReduction]: Total number of compositions: 329 [2023-08-31 20:53:50,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:50,052 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;@6ff0d9bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:50,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:50,140 INFO L130 PetriNetUnfolder]: 96/637 cut-off events. [2023-08-31 20:53:50,140 INFO L131 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2023-08-31 20:53:50,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:50,141 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:53:50,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:50,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1186120350, now seen corresponding path program 1 times [2023-08-31 20:53:50,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:50,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143172154] [2023-08-31 20:53:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:50,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:50,164 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:50,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:50,187 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:50,187 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:50,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:53:50,187 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:50,188 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:50,188 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:50,188 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:53:50,247 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:53:50,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 662 places, 721 transitions, 1640 flow [2023-08-31 20:54:08,605 INFO L130 PetriNetUnfolder]: 11390/51298 cut-off events. [2023-08-31 20:54:08,605 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:54:10,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62662 conditions, 51298 events. 11390/51298 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 645686 event pairs, 7181 based on Foata normal form. 0/44949 useless extension candidates. Maximal degree in co-relation 30786. Up to 11264 conditions per place. [2023-08-31 20:54:10,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 662 places, 721 transitions, 1640 flow [2023-08-31 20:54:11,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 662 places, 721 transitions, 1640 flow [2023-08-31 20:54:11,945 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:54:11,945 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 662 places, 721 transitions, 1640 flow [2023-08-31 20:54:11,945 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 662 places, 721 transitions, 1640 flow [2023-08-31 20:54:11,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 662 places, 721 transitions, 1640 flow [2023-08-31 20:54:29,741 INFO L130 PetriNetUnfolder]: 11390/51298 cut-off events. [2023-08-31 20:54:29,742 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:54:32,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62662 conditions, 51298 events. 11390/51298 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 645686 event pairs, 7181 based on Foata normal form. 0/44949 useless extension candidates. Maximal degree in co-relation 30786. Up to 11264 conditions per place. [2023-08-31 20:54:38,464 INFO L119 LiptonReduction]: Number of co-enabled transitions 423500 [2023-08-31 20:54:42,808 INFO L134 LiptonReduction]: Checked pairs total: 1937486 [2023-08-31 20:54:42,808 INFO L136 LiptonReduction]: Total number of compositions: 354 [2023-08-31 20:54:42,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:54:42,810 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;@6ff0d9bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:54:42,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:54:42,906 INFO L130 PetriNetUnfolder]: 126/771 cut-off events. [2023-08-31 20:54:42,906 INFO L131 PetriNetUnfolder]: For 382/382 co-relation queries the response was YES. [2023-08-31 20:54:42,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:54:42,906 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:54:42,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:54:42,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:54:42,907 INFO L85 PathProgramCache]: Analyzing trace with hash 684347484, now seen corresponding path program 1 times [2023-08-31 20:54:42,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:54:42,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546356864] [2023-08-31 20:54:42,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:54:42,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:54:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:42,930 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:54:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:42,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:54:42,952 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:54:42,952 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:54:42,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:54:42,953 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:54:42,953 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:54:42,953 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:54:42,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:54:43,000 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:54:43,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 714 places, 778 transitions, 1784 flow [2023-08-31 20:55:22,852 INFO L130 PetriNetUnfolder]: 24713/103618 cut-off events. [2023-08-31 20:55:22,853 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:55:29,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128309 conditions, 103618 events. 24713/103618 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1689. Compared 1435833 event pairs, 16398 based on Foata normal form. 0/91107 useless extension candidates. Maximal degree in co-relation 62638. Up to 24576 conditions per place. [2023-08-31 20:55:29,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 714 places, 778 transitions, 1784 flow [2023-08-31 20:55:31,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 714 places, 778 transitions, 1784 flow [2023-08-31 20:55:31,902 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:31,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 714 places, 778 transitions, 1784 flow [2023-08-31 20:55:31,902 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 714 places, 778 transitions, 1784 flow [2023-08-31 20:55:31,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 714 places, 778 transitions, 1784 flow [2023-08-31 20:56:15,759 INFO L130 PetriNetUnfolder]: 24713/103618 cut-off events. [2023-08-31 20:56:15,759 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:56:21,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128309 conditions, 103618 events. 24713/103618 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1689. Compared 1435833 event pairs, 16398 based on Foata normal form. 0/91107 useless extension candidates. Maximal degree in co-relation 62638. Up to 24576 conditions per place. [2023-08-31 20:56:38,998 INFO L119 LiptonReduction]: Number of co-enabled transitions 500280 [2023-08-31 20:56:43,619 INFO L134 LiptonReduction]: Checked pairs total: 2326105 [2023-08-31 20:56:43,620 INFO L136 LiptonReduction]: Total number of compositions: 383 [2023-08-31 20:56:43,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:43,621 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;@6ff0d9bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:43,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:43,730 INFO L130 PetriNetUnfolder]: 171/944 cut-off events. [2023-08-31 20:56:43,731 INFO L131 PetriNetUnfolder]: For 523/523 co-relation queries the response was YES. [2023-08-31 20:56:43,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:43,731 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:43,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:43,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:43,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1309398320, now seen corresponding path program 1 times [2023-08-31 20:56:43,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:43,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764321300] [2023-08-31 20:56:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:43,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:43,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:43,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:43,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:43,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:43,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:56:43,777 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:43,778 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:43,778 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:43,778 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:56:43,826 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:56:43,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 766 places, 835 transitions, 1930 flow