./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_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_08-cond_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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --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 20:44:37,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:44:37,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:44:37,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:44:37,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:44:37,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:44:37,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:44:37,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:44:37,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:44:37,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:44:37,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:44:37,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:44:37,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:44:37,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:44:37,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:44:37,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:44:37,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:44:37,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:44:37,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:44:37,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:44:37,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:44:37,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:44:37,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:44:37,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:44:37,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:44:37,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:44:37,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:44:37,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:44:37,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:44:37,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:44:37,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:44:37,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:44:37,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:44:37,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:44:37,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:44:37,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:44:37,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:44:37,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:44:37,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:44:37,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:44:37,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:44:37,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:44:37,353 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:44:37,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:44:37,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:44:37,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:44:37,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:44:37,355 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:44:37,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:44:37,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:44:37,356 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:44:37,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:44:37,357 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:44:37,358 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:44:37,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:44:37,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:44:37,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:44:37,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:44:37,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:44:37,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:44:37,359 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:44:37,359 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:44:37,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:44:37,359 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:44:37,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:44:37,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:44:37,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:44:37,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:44:37,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:44:37,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:44:37,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:44:37,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:44:37,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:44:37,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:44:37,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:44:37,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:44:37,362 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:44:37,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:44:37,362 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:44:37,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:44:37,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:44:37,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:44:37,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:44:37,669 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:44:37,669 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:44:37,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-08-31 20:44:38,912 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:44:39,229 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:44:39,230 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-08-31 20:44:39,255 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d657da38f/02139210123e48cdb68fd5febdcc70d7/FLAG7ce988745 [2023-08-31 20:44:39,277 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d657da38f/02139210123e48cdb68fd5febdcc70d7 [2023-08-31 20:44:39,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:44:39,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:44:39,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:44:39,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:44:39,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:44:39,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:39,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@268f7bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39, skipping insertion in model container [2023-08-31 20:44:39,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:39,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:44:39,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:44:39,740 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_08-cond_racefree.i[41322,41335] [2023-08-31 20:44:39,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:44:39,779 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:44:39,822 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_08-cond_racefree.i[41322,41335] [2023-08-31 20:44:39,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:44:39,883 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:44:39,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39 WrapperNode [2023-08-31 20:44:39,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:44:39,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:44:39,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:44:39,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:44:39,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:39,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:39,933 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 97 [2023-08-31 20:44:39,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:44:39,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:44:39,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:44:39,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:44:39,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:39,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:39,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:39,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:39,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:39,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:39,985 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:39,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:39,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:44:39,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:44:40,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:44:40,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:44:40,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39" (1/1) ... [2023-08-31 20:44:40,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:44:40,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:44:40,032 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 20:44:40,036 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 20:44:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:44:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:44:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:44:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:44:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:44:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:44:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:44:40,060 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:44:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:44:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:44:40,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:44:40,062 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 20:44:40,182 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:44:40,184 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:44:40,478 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:44:40,485 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:44:40,491 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-31 20:44:40,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:44:40 BoogieIcfgContainer [2023-08-31 20:44:40,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:44:40,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:44:40,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:44:40,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:44:40,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:44:39" (1/3) ... [2023-08-31 20:44:40,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f53016a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:44:40, skipping insertion in model container [2023-08-31 20:44:40,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:39" (2/3) ... [2023-08-31 20:44:40,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f53016a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:44:40, skipping insertion in model container [2023-08-31 20:44:40,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:44:40" (3/3) ... [2023-08-31 20:44:40,508 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2023-08-31 20:44:40,516 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:44:40,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:44:40,525 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-31 20:44:40,525 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:44:40,600 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:44:40,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 145 transitions, 298 flow [2023-08-31 20:44:40,690 INFO L130 PetriNetUnfolder]: 23/195 cut-off events. [2023-08-31 20:44:40,690 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:44:40,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 195 events. 23/195 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 541 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 99. Up to 6 conditions per place. [2023-08-31 20:44:40,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 145 transitions, 298 flow [2023-08-31 20:44:40,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 140 transitions, 285 flow [2023-08-31 20:44:40,704 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:44:40,716 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 140 transitions, 285 flow [2023-08-31 20:44:40,719 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 140 transitions, 285 flow [2023-08-31 20:44:40,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 140 transitions, 285 flow [2023-08-31 20:44:40,785 INFO L130 PetriNetUnfolder]: 22/190 cut-off events. [2023-08-31 20:44:40,785 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:44:40,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 190 events. 22/190 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 536 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 99. Up to 6 conditions per place. [2023-08-31 20:44:40,789 INFO L119 LiptonReduction]: Number of co-enabled transitions 4928 [2023-08-31 20:44:44,075 INFO L134 LiptonReduction]: Checked pairs total: 11434 [2023-08-31 20:44:44,076 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-31 20:44:44,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:44:44,093 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;@776d458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:44:44,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:44:44,099 INFO L130 PetriNetUnfolder]: 2/24 cut-off events. [2023-08-31 20:44:44,099 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:44:44,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:44:44,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:44:44,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:44:44,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:44:44,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1183196055, now seen corresponding path program 1 times [2023-08-31 20:44:44,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:44:44,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901482502] [2023-08-31 20:44:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:44:44,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:44:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:44,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:44:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:44,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:44:44,261 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:44:44,262 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:44:44,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:44:44,264 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:44:44,269 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:44:44,270 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:44:44,270 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:44:44,295 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:44:44,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 191 transitions, 400 flow [2023-08-31 20:44:44,368 INFO L130 PetriNetUnfolder]: 40/321 cut-off events. [2023-08-31 20:44:44,369 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:44:44,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 321 events. 40/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1079 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 197. Up to 9 conditions per place. [2023-08-31 20:44:44,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 191 transitions, 400 flow [2023-08-31 20:44:44,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 191 transitions, 400 flow [2023-08-31 20:44:44,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:44:44,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 191 transitions, 400 flow [2023-08-31 20:44:44,375 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 191 transitions, 400 flow [2023-08-31 20:44:44,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 191 transitions, 400 flow [2023-08-31 20:44:44,405 INFO L130 PetriNetUnfolder]: 40/321 cut-off events. [2023-08-31 20:44:44,406 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:44:44,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 321 events. 40/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1079 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 197. Up to 9 conditions per place. [2023-08-31 20:44:44,418 INFO L119 LiptonReduction]: Number of co-enabled transitions 14696 [2023-08-31 20:44:47,490 INFO L134 LiptonReduction]: Checked pairs total: 47019 [2023-08-31 20:44:47,491 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-31 20:44:47,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:44:47,494 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;@776d458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:44:47,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:44:47,501 INFO L130 PetriNetUnfolder]: 8/65 cut-off events. [2023-08-31 20:44:47,501 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 20:44:47,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:44:47,501 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:44:47,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:44:47,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:44:47,502 INFO L85 PathProgramCache]: Analyzing trace with hash -427033367, now seen corresponding path program 1 times [2023-08-31 20:44:47,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:44:47,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978249241] [2023-08-31 20:44:47,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:44:47,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:44:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:47,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:44:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:47,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:44:47,551 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:44:47,551 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:44:47,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:44:47,551 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:44:47,552 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:44:47,552 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:44:47,552 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:44:47,590 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:44:47,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 237 transitions, 504 flow [2023-08-31 20:44:47,645 INFO L130 PetriNetUnfolder]: 62/490 cut-off events. [2023-08-31 20:44:47,646 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:44:47,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 490 events. 62/490 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1803 event pairs, 1 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 329. Up to 16 conditions per place. [2023-08-31 20:44:47,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 237 transitions, 504 flow [2023-08-31 20:44:47,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 237 transitions, 504 flow [2023-08-31 20:44:47,655 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:44:47,655 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 237 transitions, 504 flow [2023-08-31 20:44:47,656 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 237 transitions, 504 flow [2023-08-31 20:44:47,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 237 transitions, 504 flow [2023-08-31 20:44:47,707 INFO L130 PetriNetUnfolder]: 62/490 cut-off events. [2023-08-31 20:44:47,708 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:44:47,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 490 events. 62/490 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1803 event pairs, 1 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 329. Up to 16 conditions per place. [2023-08-31 20:44:47,743 INFO L119 LiptonReduction]: Number of co-enabled transitions 28248 [2023-08-31 20:44:51,061 INFO L134 LiptonReduction]: Checked pairs total: 113972 [2023-08-31 20:44:51,062 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-08-31 20:44:51,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:44:51,066 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;@776d458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:44:51,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:44:51,075 INFO L130 PetriNetUnfolder]: 22/125 cut-off events. [2023-08-31 20:44:51,075 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 20:44:51,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:44:51,076 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:44:51,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:44:51,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:44:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash 225028975, now seen corresponding path program 1 times [2023-08-31 20:44:51,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:44:51,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699949735] [2023-08-31 20:44:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:44:51,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:44:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:51,102 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:44:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:51,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:44:51,124 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:44:51,124 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:44:51,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:44:51,124 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:44:51,125 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:44:51,125 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:44:51,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:44:51,145 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:44:51,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 283 transitions, 610 flow [2023-08-31 20:44:51,261 INFO L130 PetriNetUnfolder]: 96/747 cut-off events. [2023-08-31 20:44:51,262 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:44:51,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 747 events. 96/747 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3118 event pairs, 6 based on Foata normal form. 0/614 useless extension candidates. Maximal degree in co-relation 510. Up to 32 conditions per place. [2023-08-31 20:44:51,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 283 transitions, 610 flow [2023-08-31 20:44:51,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 283 transitions, 610 flow [2023-08-31 20:44:51,277 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:44:51,277 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 283 transitions, 610 flow [2023-08-31 20:44:51,277 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 283 transitions, 610 flow [2023-08-31 20:44:51,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 283 transitions, 610 flow [2023-08-31 20:44:51,372 INFO L130 PetriNetUnfolder]: 96/747 cut-off events. [2023-08-31 20:44:51,372 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:44:51,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 747 events. 96/747 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3118 event pairs, 6 based on Foata normal form. 0/614 useless extension candidates. Maximal degree in co-relation 510. Up to 32 conditions per place. [2023-08-31 20:44:51,412 INFO L119 LiptonReduction]: Number of co-enabled transitions 45936 [2023-08-31 20:44:54,560 INFO L134 LiptonReduction]: Checked pairs total: 176441 [2023-08-31 20:44:54,561 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-08-31 20:44:54,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:44:54,564 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@776d458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:44:54,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:44:54,578 INFO L130 PetriNetUnfolder]: 29/176 cut-off events. [2023-08-31 20:44:54,578 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 20:44:54,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:44:54,579 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:44:54,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:44:54,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:44:54,580 INFO L85 PathProgramCache]: Analyzing trace with hash -59587744, now seen corresponding path program 1 times [2023-08-31 20:44:54,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:44:54,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822578430] [2023-08-31 20:44:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:44:54,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:44:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:54,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:44:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:54,648 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:44:54,649 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:44:54,649 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:44:54,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:44:54,649 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:44:54,650 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:44:54,650 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:44:54,650 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:44:54,675 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:44:54,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 329 transitions, 718 flow [2023-08-31 20:44:54,881 INFO L130 PetriNetUnfolder]: 158/1184 cut-off events. [2023-08-31 20:44:54,882 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:44:54,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 1184 events. 158/1184 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5753 event pairs, 23 based on Foata normal form. 0/984 useless extension candidates. Maximal degree in co-relation 792. Up to 80 conditions per place. [2023-08-31 20:44:54,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 329 transitions, 718 flow [2023-08-31 20:44:54,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 329 transitions, 718 flow [2023-08-31 20:44:54,912 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:44:54,912 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 297 places, 329 transitions, 718 flow [2023-08-31 20:44:54,912 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 297 places, 329 transitions, 718 flow [2023-08-31 20:44:54,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 329 transitions, 718 flow [2023-08-31 20:44:55,097 INFO L130 PetriNetUnfolder]: 158/1184 cut-off events. [2023-08-31 20:44:55,099 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:44:55,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 1184 events. 158/1184 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5753 event pairs, 23 based on Foata normal form. 0/984 useless extension candidates. Maximal degree in co-relation 792. Up to 80 conditions per place. [2023-08-31 20:44:55,165 INFO L119 LiptonReduction]: Number of co-enabled transitions 67760 [2023-08-31 20:44:58,165 INFO L134 LiptonReduction]: Checked pairs total: 270583 [2023-08-31 20:44:58,165 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-08-31 20:44:58,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:44:58,168 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;@776d458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:44:58,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:44:58,188 INFO L130 PetriNetUnfolder]: 48/255 cut-off events. [2023-08-31 20:44:58,189 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-31 20:44:58,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:44:58,189 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:44:58,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:44:58,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:44:58,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1590668564, now seen corresponding path program 1 times [2023-08-31 20:44:58,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:44:58,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729826644] [2023-08-31 20:44:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:44:58,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:44:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:58,211 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:44:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:58,230 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:44:58,231 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:44:58,231 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:44:58,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:44:58,231 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:44:58,232 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:44:58,232 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:44:58,232 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:44:58,256 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:44:58,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 375 transitions, 828 flow [2023-08-31 20:44:58,639 INFO L130 PetriNetUnfolder]: 284/1989 cut-off events. [2023-08-31 20:44:58,639 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:44:58,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 1989 events. 284/1989 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 11816 event pairs, 72 based on Foata normal form. 0/1674 useless extension candidates. Maximal degree in co-relation 1283. Up to 192 conditions per place. [2023-08-31 20:44:58,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 375 transitions, 828 flow [2023-08-31 20:44:58,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 338 places, 375 transitions, 828 flow [2023-08-31 20:44:58,734 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:44:58,734 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 338 places, 375 transitions, 828 flow [2023-08-31 20:44:58,735 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 338 places, 375 transitions, 828 flow [2023-08-31 20:44:58,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 375 transitions, 828 flow [2023-08-31 20:44:59,161 INFO L130 PetriNetUnfolder]: 284/1989 cut-off events. [2023-08-31 20:44:59,161 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:44:59,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 1989 events. 284/1989 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 11816 event pairs, 72 based on Foata normal form. 0/1674 useless extension candidates. Maximal degree in co-relation 1283. Up to 192 conditions per place. [2023-08-31 20:44:59,264 INFO L119 LiptonReduction]: Number of co-enabled transitions 93720 [2023-08-31 20:45:02,697 INFO L134 LiptonReduction]: Checked pairs total: 429129 [2023-08-31 20:45:02,697 INFO L136 LiptonReduction]: Total number of compositions: 208 [2023-08-31 20:45:02,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:02,699 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;@776d458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:02,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:02,752 INFO L130 PetriNetUnfolder]: 58/322 cut-off events. [2023-08-31 20:45:02,752 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-08-31 20:45:02,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:02,753 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:02,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:02,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash 307603457, now seen corresponding path program 1 times [2023-08-31 20:45:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:02,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496664520] [2023-08-31 20:45:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:02,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:02,773 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:02,793 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:02,793 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:02,793 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:02,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:45:02,794 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:02,794 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:02,794 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:02,795 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:45:02,828 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:45:02,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 379 places, 421 transitions, 940 flow [2023-08-31 20:45:03,731 INFO L130 PetriNetUnfolder]: 554/3546 cut-off events. [2023-08-31 20:45:03,732 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:45:03,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4044 conditions, 3546 events. 554/3546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 25332 event pairs, 201 based on Foata normal form. 0/3020 useless extension candidates. Maximal degree in co-relation 2207. Up to 448 conditions per place. [2023-08-31 20:45:03,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 379 places, 421 transitions, 940 flow [2023-08-31 20:45:03,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 379 places, 421 transitions, 940 flow [2023-08-31 20:45:03,837 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:03,838 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 379 places, 421 transitions, 940 flow [2023-08-31 20:45:03,838 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 379 places, 421 transitions, 940 flow [2023-08-31 20:45:03,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 379 places, 421 transitions, 940 flow [2023-08-31 20:45:04,608 INFO L130 PetriNetUnfolder]: 554/3546 cut-off events. [2023-08-31 20:45:04,608 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:45:04,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4044 conditions, 3546 events. 554/3546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 25332 event pairs, 201 based on Foata normal form. 0/3020 useless extension candidates. Maximal degree in co-relation 2207. Up to 448 conditions per place. [2023-08-31 20:45:04,781 INFO L119 LiptonReduction]: Number of co-enabled transitions 123816 [2023-08-31 20:45:08,324 INFO L134 LiptonReduction]: Checked pairs total: 522216 [2023-08-31 20:45:08,325 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-08-31 20:45:08,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:08,327 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;@776d458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:08,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:08,374 INFO L130 PetriNetUnfolder]: 87/437 cut-off events. [2023-08-31 20:45:08,374 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-31 20:45:08,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:08,374 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:08,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:08,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash 579329400, now seen corresponding path program 1 times [2023-08-31 20:45:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:08,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029040441] [2023-08-31 20:45:08,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:08,418 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:08,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:08,441 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:08,442 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:08,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:45:08,442 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:08,443 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:08,443 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:08,443 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:45:08,476 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:45:08,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 420 places, 467 transitions, 1054 flow [2023-08-31 20:45:09,927 INFO L130 PetriNetUnfolder]: 1144/6639 cut-off events. [2023-08-31 20:45:09,927 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:45:10,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7724 conditions, 6639 events. 1144/6639 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 56966 event pairs, 522 based on Foata normal form. 0/5710 useless extension candidates. Maximal degree in co-relation 4028. Up to 1024 conditions per place. [2023-08-31 20:45:10,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 420 places, 467 transitions, 1054 flow [2023-08-31 20:45:10,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 420 places, 467 transitions, 1054 flow [2023-08-31 20:45:10,110 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:10,110 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 420 places, 467 transitions, 1054 flow [2023-08-31 20:45:10,110 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 420 places, 467 transitions, 1054 flow [2023-08-31 20:45:10,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 420 places, 467 transitions, 1054 flow [2023-08-31 20:45:11,592 INFO L130 PetriNetUnfolder]: 1144/6639 cut-off events. [2023-08-31 20:45:11,592 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:45:11,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7724 conditions, 6639 events. 1144/6639 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 56966 event pairs, 522 based on Foata normal form. 0/5710 useless extension candidates. Maximal degree in co-relation 4028. Up to 1024 conditions per place. [2023-08-31 20:45:12,035 INFO L119 LiptonReduction]: Number of co-enabled transitions 158048 [2023-08-31 20:45:15,648 INFO L134 LiptonReduction]: Checked pairs total: 676594 [2023-08-31 20:45:15,648 INFO L136 LiptonReduction]: Total number of compositions: 248 [2023-08-31 20:45:15,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:15,650 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;@776d458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:15,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:15,709 INFO L130 PetriNetUnfolder]: 116/566 cut-off events. [2023-08-31 20:45:15,709 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-08-31 20:45:15,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:15,710 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:15,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:15,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:15,710 INFO L85 PathProgramCache]: Analyzing trace with hash -938002653, now seen corresponding path program 1 times [2023-08-31 20:45:15,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:15,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974029945] [2023-08-31 20:45:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:15,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:15,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:15,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:15,752 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:15,752 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:15,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:45:15,753 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:15,753 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:15,753 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:15,753 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:45:15,784 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:45:15,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 461 places, 513 transitions, 1170 flow [2023-08-31 20:45:19,018 INFO L130 PetriNetUnfolder]: 2438/12868 cut-off events. [2023-08-31 20:45:19,018 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:45:19,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15245 conditions, 12868 events. 2438/12868 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 128286 event pairs, 1291 based on Foata normal form. 0/11152 useless extension candidates. Maximal degree in co-relation 7706. Up to 2304 conditions per place. [2023-08-31 20:45:19,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 461 places, 513 transitions, 1170 flow [2023-08-31 20:45:19,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 461 places, 513 transitions, 1170 flow [2023-08-31 20:45:19,388 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:19,388 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 461 places, 513 transitions, 1170 flow [2023-08-31 20:45:19,389 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 461 places, 513 transitions, 1170 flow [2023-08-31 20:45:19,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 461 places, 513 transitions, 1170 flow [2023-08-31 20:45:22,409 INFO L130 PetriNetUnfolder]: 2438/12868 cut-off events. [2023-08-31 20:45:22,409 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:45:22,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15245 conditions, 12868 events. 2438/12868 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 128286 event pairs, 1291 based on Foata normal form. 0/11152 useless extension candidates. Maximal degree in co-relation 7706. Up to 2304 conditions per place. [2023-08-31 20:45:23,365 INFO L119 LiptonReduction]: Number of co-enabled transitions 196416 [2023-08-31 20:45:27,162 INFO L134 LiptonReduction]: Checked pairs total: 957293 [2023-08-31 20:45:27,162 INFO L136 LiptonReduction]: Total number of compositions: 268 [2023-08-31 20:45:27,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:27,164 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;@776d458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:27,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:27,249 INFO L130 PetriNetUnfolder]: 163/749 cut-off events. [2023-08-31 20:45:27,249 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-08-31 20:45:27,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:27,249 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:27,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:27,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:27,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1259603383, now seen corresponding path program 1 times [2023-08-31 20:45:27,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:27,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289401232] [2023-08-31 20:45:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:27,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:27,291 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:27,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:27,322 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:27,322 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:27,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:45:27,322 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:27,323 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:27,323 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:27,323 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:45:27,353 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:45:27,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 502 places, 559 transitions, 1288 flow [2023-08-31 20:45:34,250 INFO L130 PetriNetUnfolder]: 5268/25497 cut-off events. [2023-08-31 20:45:34,250 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:45:34,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30703 conditions, 25497 events. 5268/25497 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 289372 event pairs, 3084 based on Foata normal form. 0/22226 useless extension candidates. Maximal degree in co-relation 15225. Up to 5120 conditions per place. [2023-08-31 20:45:34,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 502 places, 559 transitions, 1288 flow [2023-08-31 20:45:35,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 502 places, 559 transitions, 1288 flow [2023-08-31 20:45:35,196 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:35,196 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 502 places, 559 transitions, 1288 flow [2023-08-31 20:45:35,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 502 places, 559 transitions, 1288 flow [2023-08-31 20:45:35,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 502 places, 559 transitions, 1288 flow [2023-08-31 20:45:41,863 INFO L130 PetriNetUnfolder]: 5268/25497 cut-off events. [2023-08-31 20:45:41,863 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:45:42,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30703 conditions, 25497 events. 5268/25497 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 289372 event pairs, 3084 based on Foata normal form. 0/22226 useless extension candidates. Maximal degree in co-relation 15225. Up to 5120 conditions per place. [2023-08-31 20:45:44,355 INFO L119 LiptonReduction]: Number of co-enabled transitions 238920 [2023-08-31 20:45:48,230 INFO L134 LiptonReduction]: Checked pairs total: 1161665 [2023-08-31 20:45:48,230 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-08-31 20:45:48,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:48,232 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;@776d458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:48,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:48,348 INFO L130 PetriNetUnfolder]: 239/1015 cut-off events. [2023-08-31 20:45:48,348 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-08-31 20:45:48,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:48,348 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:48,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:48,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1016548892, now seen corresponding path program 1 times [2023-08-31 20:45:48,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:48,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189755097] [2023-08-31 20:45:48,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:48,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:48,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:48,431 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:48,432 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:48,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:45:48,432 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:48,433 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:48,433 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:48,433 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:45:48,473 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:45:48,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 605 transitions, 1408 flow [2023-08-31 20:46:03,545 INFO L130 PetriNetUnfolder]: 11426/51182 cut-off events. [2023-08-31 20:46:03,545 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:46:05,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62546 conditions, 51182 events. 11426/51182 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 645314 event pairs, 7181 based on Foata normal form. 0/44820 useless extension candidates. Maximal degree in co-relation 30681. Up to 11264 conditions per place. [2023-08-31 20:46:05,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 543 places, 605 transitions, 1408 flow [2023-08-31 20:46:06,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 543 places, 605 transitions, 1408 flow [2023-08-31 20:46:06,499 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:06,499 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 543 places, 605 transitions, 1408 flow [2023-08-31 20:46:06,499 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 543 places, 605 transitions, 1408 flow [2023-08-31 20:46:06,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 605 transitions, 1408 flow [2023-08-31 20:46:21,434 INFO L130 PetriNetUnfolder]: 11426/51182 cut-off events. [2023-08-31 20:46:21,435 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:46:24,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62546 conditions, 51182 events. 11426/51182 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 645314 event pairs, 7181 based on Foata normal form. 0/44820 useless extension candidates. Maximal degree in co-relation 30681. Up to 11264 conditions per place. [2023-08-31 20:46:28,545 INFO L119 LiptonReduction]: Number of co-enabled transitions 285560 [2023-08-31 20:46:32,279 INFO L134 LiptonReduction]: Checked pairs total: 1253804 [2023-08-31 20:46:32,279 INFO L136 LiptonReduction]: Total number of compositions: 301 [2023-08-31 20:46:32,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:46:32,280 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;@776d458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:46:32,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:46:32,437 INFO L130 PetriNetUnfolder]: 366/1414 cut-off events. [2023-08-31 20:46:32,438 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-08-31 20:46:32,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:46:32,438 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:46:32,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:46:32,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:46:32,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1783674605, now seen corresponding path program 1 times [2023-08-31 20:46:32,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:46:32,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742377041] [2023-08-31 20:46:32,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:46:32,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:46:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:32,461 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:46:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:32,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:46:32,485 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:46:32,485 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:46:32,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:46:32,485 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:46:32,486 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:46:32,486 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:46:32,486 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:46:32,521 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:46:32,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 584 places, 651 transitions, 1530 flow [2023-08-31 20:47:08,333 INFO L130 PetriNetUnfolder]: 24752/103491 cut-off events. [2023-08-31 20:47:08,333 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:47:15,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128182 conditions, 103491 events. 24752/103491 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 1435136 event pairs, 16398 based on Foata normal form. 0/90966 useless extension candidates. Maximal degree in co-relation 62522. Up to 24576 conditions per place. [2023-08-31 20:47:15,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 584 places, 651 transitions, 1530 flow [2023-08-31 20:47:18,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 584 places, 651 transitions, 1530 flow [2023-08-31 20:47:18,248 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:18,249 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 584 places, 651 transitions, 1530 flow [2023-08-31 20:47:18,249 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 584 places, 651 transitions, 1530 flow [2023-08-31 20:47:18,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 584 places, 651 transitions, 1530 flow [2023-08-31 20:47:51,136 INFO L130 PetriNetUnfolder]: 24752/103491 cut-off events. [2023-08-31 20:47:51,136 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:47:59,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128182 conditions, 103491 events. 24752/103491 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 1435136 event pairs, 16398 based on Foata normal form. 0/90966 useless extension candidates. Maximal degree in co-relation 62522. Up to 24576 conditions per place. [2023-08-31 20:48:13,739 INFO L119 LiptonReduction]: Number of co-enabled transitions 336336 [2023-08-31 20:48:18,958 INFO L134 LiptonReduction]: Checked pairs total: 1668065 [2023-08-31 20:48:18,958 INFO L136 LiptonReduction]: Total number of compositions: 324 [2023-08-31 20:48:18,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:48:18,961 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;@776d458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:48:18,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:48:19,286 INFO L130 PetriNetUnfolder]: 579/2024 cut-off events. [2023-08-31 20:48:19,287 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-08-31 20:48:19,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:48:19,288 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 20:48:19,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:48:19,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:48:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1619872716, now seen corresponding path program 1 times [2023-08-31 20:48:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:48:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472422669] [2023-08-31 20:48:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:48:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:48:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:48:19,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:48:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:48:19,386 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:48:19,386 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:48:19,387 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:48:19,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:48:19,387 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:48:19,390 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:48:19,391 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:48:19,391 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:48:19,472 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:48:19,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 625 places, 697 transitions, 1654 flow [2023-08-31 20:49:45,270 INFO L130 PetriNetUnfolder]: 53438/210072 cut-off events. [2023-08-31 20:49:45,271 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-08-31 20:50:04,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263451 conditions, 210072 events. 53438/210072 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2528. Compared 3156618 event pairs, 36879 based on Foata normal form. 0/185240 useless extension candidates. Maximal degree in co-relation 128156. Up to 53248 conditions per place. [2023-08-31 20:50:04,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 625 places, 697 transitions, 1654 flow [2023-08-31 20:50:11,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 625 places, 697 transitions, 1654 flow [2023-08-31 20:50:11,930 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:11,930 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 625 places, 697 transitions, 1654 flow [2023-08-31 20:50:11,931 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 625 places, 697 transitions, 1654 flow [2023-08-31 20:50:11,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 625 places, 697 transitions, 1654 flow