./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_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_12-ptr_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 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --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 20:46:13,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:46:13,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:46:13,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:46:13,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:46:13,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:46:13,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:46:13,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:46:13,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:46:13,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:46:13,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:46:13,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:46:13,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:46:13,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:46:13,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:46:13,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:46:13,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:46:13,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:46:13,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:46:13,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:46:13,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:46:13,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:46:13,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:46:13,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:46:13,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:46:13,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:46:13,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:46:13,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:46:13,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:46:13,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:46:13,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:46:13,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:46:13,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:46:13,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:46:13,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:46:13,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:46:13,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:46:13,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:46:13,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:46:13,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:46:13,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:46:13,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:46:13,375 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:46:13,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:46:13,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:46:13,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:46:13,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:46:13,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:46:13,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:46:13,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:46:13,379 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:46:13,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:46:13,380 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:46:13,380 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:46:13,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:46:13,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:46:13,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:46:13,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:46:13,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:46:13,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:46:13,381 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:46:13,382 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:46:13,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:46:13,382 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:46:13,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:46:13,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:46:13,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:46:13,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:46:13,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:46:13,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:46:13,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:46:13,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:46:13,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:46:13,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:46:13,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:46:13,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:46:13,385 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:46:13,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:46:13,385 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:46:13,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:46:13,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:46:13,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:46:13,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:46:13,711 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:46:13,712 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:46:13,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-08-31 20:46:14,954 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:46:15,183 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:46:15,184 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-08-31 20:46:15,196 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b25c032/a26db93d598141feaaff47e52b050ba9/FLAG1cbed5586 [2023-08-31 20:46:15,213 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b25c032/a26db93d598141feaaff47e52b050ba9 [2023-08-31 20:46:15,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:46:15,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:46:15,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:46:15,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:46:15,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:46:15,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447b63d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15, skipping insertion in model container [2023-08-31 20:46:15,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:46:15,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:46:15,569 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_12-ptr_racefree.i[30176,30189] [2023-08-31 20:46:15,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:46:15,614 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:46:15,650 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_12-ptr_racefree.i[30176,30189] [2023-08-31 20:46:15,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:46:15,718 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:46:15,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15 WrapperNode [2023-08-31 20:46:15,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:46:15,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:46:15,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:46:15,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:46:15,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,774 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2023-08-31 20:46:15,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:46:15,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:46:15,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:46:15,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:46:15,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,813 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:46:15,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:46:15,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:46:15,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:46:15,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15" (1/1) ... [2023-08-31 20:46:15,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:46:15,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:46:15,849 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 20:46:15,855 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 20:46:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:46:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:46:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:46:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:46:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:46:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:46:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:46:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:46:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:46:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:46:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:46:15,882 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 20:46:16,006 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:46:16,008 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:46:16,392 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:46:16,399 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:46:16,400 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-31 20:46:16,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:46:16 BoogieIcfgContainer [2023-08-31 20:46:16,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:46:16,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:46:16,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:46:16,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:46:16,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:46:15" (1/3) ... [2023-08-31 20:46:16,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1c25d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:46:16, skipping insertion in model container [2023-08-31 20:46:16,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:46:15" (2/3) ... [2023-08-31 20:46:16,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1c25d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:46:16, skipping insertion in model container [2023-08-31 20:46:16,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:46:16" (3/3) ... [2023-08-31 20:46:16,409 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2023-08-31 20:46:16,418 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:46:16,426 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:46:16,427 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-31 20:46:16,427 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:46:16,543 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:46:16,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 156 transitions, 320 flow [2023-08-31 20:46:16,673 INFO L130 PetriNetUnfolder]: 17/202 cut-off events. [2023-08-31 20:46:16,674 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:46:16,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 202 events. 17/202 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 586 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 112. Up to 4 conditions per place. [2023-08-31 20:46:16,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 156 transitions, 320 flow [2023-08-31 20:46:16,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 151 transitions, 307 flow [2023-08-31 20:46:16,692 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:16,710 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 151 transitions, 307 flow [2023-08-31 20:46:16,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 151 transitions, 307 flow [2023-08-31 20:46:16,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 151 transitions, 307 flow [2023-08-31 20:46:16,763 INFO L130 PetriNetUnfolder]: 16/197 cut-off events. [2023-08-31 20:46:16,763 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:46:16,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 197 events. 16/197 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 559 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 112. Up to 4 conditions per place. [2023-08-31 20:46:16,774 INFO L119 LiptonReduction]: Number of co-enabled transitions 6344 [2023-08-31 20:46:19,894 INFO L134 LiptonReduction]: Checked pairs total: 28628 [2023-08-31 20:46:19,895 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-31 20:46:19,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:46:19,938 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;@2f0d962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:46:19,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:46:19,943 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2023-08-31 20:46:19,943 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:46:19,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:46:19,944 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:46:19,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:46:19,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:46:19,949 INFO L85 PathProgramCache]: Analyzing trace with hash -812957417, now seen corresponding path program 1 times [2023-08-31 20:46:19,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:46:19,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375447817] [2023-08-31 20:46:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:46:19,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:46:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:20,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:46:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:20,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:46:20,185 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:46:20,186 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:46:20,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:46:20,188 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:46:20,194 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:46:20,195 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:46:20,195 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:46:20,239 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:46:20,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 219 transitions, 456 flow [2023-08-31 20:46:20,317 INFO L130 PetriNetUnfolder]: 31/341 cut-off events. [2023-08-31 20:46:20,318 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:46:20,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 341 events. 31/341 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1275 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-08-31 20:46:20,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 219 transitions, 456 flow [2023-08-31 20:46:20,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 219 transitions, 456 flow [2023-08-31 20:46:20,326 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:20,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 219 transitions, 456 flow [2023-08-31 20:46:20,326 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 219 transitions, 456 flow [2023-08-31 20:46:20,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 219 transitions, 456 flow [2023-08-31 20:46:20,373 INFO L130 PetriNetUnfolder]: 31/341 cut-off events. [2023-08-31 20:46:20,374 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:46:20,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 341 events. 31/341 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1275 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-08-31 20:46:20,392 INFO L119 LiptonReduction]: Number of co-enabled transitions 21472 [2023-08-31 20:46:23,431 INFO L134 LiptonReduction]: Checked pairs total: 111273 [2023-08-31 20:46:23,431 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-31 20:46:23,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:46:23,434 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;@2f0d962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:46:23,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:46:23,441 INFO L130 PetriNetUnfolder]: 4/63 cut-off events. [2023-08-31 20:46:23,441 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 20:46:23,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:46:23,441 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:46:23,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:46:23,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:46:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1749362880, now seen corresponding path program 1 times [2023-08-31 20:46:23,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:46:23,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650964449] [2023-08-31 20:46:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:46:23,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:46:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:23,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:46:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:23,536 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:46:23,537 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:46:23,538 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:46:23,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:46:23,539 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:46:23,540 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:46:23,540 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:46:23,540 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:46:23,580 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:46:23,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 282 transitions, 594 flow [2023-08-31 20:46:23,681 INFO L130 PetriNetUnfolder]: 50/523 cut-off events. [2023-08-31 20:46:23,681 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:46:23,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 523 events. 50/523 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2204 event pairs, 1 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 349. Up to 16 conditions per place. [2023-08-31 20:46:23,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 282 transitions, 594 flow [2023-08-31 20:46:23,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 282 transitions, 594 flow [2023-08-31 20:46:23,696 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:23,697 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 282 transitions, 594 flow [2023-08-31 20:46:23,697 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 282 transitions, 594 flow [2023-08-31 20:46:23,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 282 transitions, 594 flow [2023-08-31 20:46:23,776 INFO L130 PetriNetUnfolder]: 50/523 cut-off events. [2023-08-31 20:46:23,776 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:46:23,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 523 events. 50/523 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2204 event pairs, 1 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 349. Up to 16 conditions per place. [2023-08-31 20:46:23,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 43920 [2023-08-31 20:46:26,838 INFO L134 LiptonReduction]: Checked pairs total: 213034 [2023-08-31 20:46:26,839 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-08-31 20:46:26,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:46:26,842 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;@2f0d962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:46:26,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:46:26,851 INFO L130 PetriNetUnfolder]: 8/114 cut-off events. [2023-08-31 20:46:26,851 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:46:26,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:46:26,851 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:46:26,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:46:26,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:46:26,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1249416930, now seen corresponding path program 1 times [2023-08-31 20:46:26,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:46:26,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798683438] [2023-08-31 20:46:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:46:26,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:46:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:26,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:46:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:26,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:46:26,891 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:46:26,892 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:46:26,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:46:26,892 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:46:26,893 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:46:26,893 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:46:26,893 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:46:26,924 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:46:26,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 345 transitions, 734 flow [2023-08-31 20:46:27,079 INFO L130 PetriNetUnfolder]: 81/793 cut-off events. [2023-08-31 20:46:27,079 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:46:27,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 793 events. 81/793 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3687 event pairs, 6 based on Foata normal form. 0/675 useless extension candidates. Maximal degree in co-relation 543. Up to 32 conditions per place. [2023-08-31 20:46:27,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 345 transitions, 734 flow [2023-08-31 20:46:27,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 345 transitions, 734 flow [2023-08-31 20:46:27,100 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:27,100 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 345 transitions, 734 flow [2023-08-31 20:46:27,101 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 345 transitions, 734 flow [2023-08-31 20:46:27,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 345 transitions, 734 flow [2023-08-31 20:46:27,243 INFO L130 PetriNetUnfolder]: 81/793 cut-off events. [2023-08-31 20:46:27,244 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:46:27,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 793 events. 81/793 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3687 event pairs, 6 based on Foata normal form. 0/675 useless extension candidates. Maximal degree in co-relation 543. Up to 32 conditions per place. [2023-08-31 20:46:27,291 INFO L119 LiptonReduction]: Number of co-enabled transitions 74176 [2023-08-31 20:46:30,637 INFO L134 LiptonReduction]: Checked pairs total: 424549 [2023-08-31 20:46:30,637 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-31 20:46:30,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:46:30,639 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;@2f0d962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:46:30,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:46:30,656 INFO L130 PetriNetUnfolder]: 15/183 cut-off events. [2023-08-31 20:46:30,656 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:46:30,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:46:30,656 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:46:30,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:46:30,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:46:30,657 INFO L85 PathProgramCache]: Analyzing trace with hash -691564579, now seen corresponding path program 1 times [2023-08-31 20:46:30,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:46:30,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097000140] [2023-08-31 20:46:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:46:30,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:46:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:30,681 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:46:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:30,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:46:30,698 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:46:30,698 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:46:30,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:46:30,698 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:46:30,699 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:46:30,699 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:46:30,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:46:30,740 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:46:30,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 379 places, 408 transitions, 876 flow [2023-08-31 20:46:31,006 INFO L130 PetriNetUnfolder]: 140/1243 cut-off events. [2023-08-31 20:46:31,007 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:46:31,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 1243 events. 140/1243 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6584 event pairs, 23 based on Foata normal form. 0/1061 useless extension candidates. Maximal degree in co-relation 838. Up to 80 conditions per place. [2023-08-31 20:46:31,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 379 places, 408 transitions, 876 flow [2023-08-31 20:46:31,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 379 places, 408 transitions, 876 flow [2023-08-31 20:46:31,049 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:31,049 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 379 places, 408 transitions, 876 flow [2023-08-31 20:46:31,050 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 379 places, 408 transitions, 876 flow [2023-08-31 20:46:31,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 379 places, 408 transitions, 876 flow [2023-08-31 20:46:31,334 INFO L130 PetriNetUnfolder]: 140/1243 cut-off events. [2023-08-31 20:46:31,335 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:46:31,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 1243 events. 140/1243 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6584 event pairs, 23 based on Foata normal form. 0/1061 useless extension candidates. Maximal degree in co-relation 838. Up to 80 conditions per place. [2023-08-31 20:46:31,416 INFO L119 LiptonReduction]: Number of co-enabled transitions 112240 [2023-08-31 20:46:34,674 INFO L134 LiptonReduction]: Checked pairs total: 658406 [2023-08-31 20:46:34,674 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-08-31 20:46:34,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:46:34,677 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;@2f0d962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:46:34,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:46:34,702 INFO L130 PetriNetUnfolder]: 24/253 cut-off events. [2023-08-31 20:46:34,703 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 20:46:34,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:46:34,703 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:46:34,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:46:34,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:46:34,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1666797151, now seen corresponding path program 1 times [2023-08-31 20:46:34,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:46:34,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716633300] [2023-08-31 20:46:34,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:46:34,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:46:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:34,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:46:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:34,742 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:46:34,742 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:46:34,742 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:46:34,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:46:34,743 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:46:34,743 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:46:34,743 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:46:34,743 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:46:34,783 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:46:34,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 437 places, 471 transitions, 1020 flow [2023-08-31 20:46:35,263 INFO L130 PetriNetUnfolder]: 263/2061 cut-off events. [2023-08-31 20:46:35,264 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:46:35,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2293 conditions, 2061 events. 263/2061 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 12855 event pairs, 72 based on Foata normal form. 0/1767 useless extension candidates. Maximal degree in co-relation 1342. Up to 192 conditions per place. [2023-08-31 20:46:35,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 437 places, 471 transitions, 1020 flow [2023-08-31 20:46:35,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 437 places, 471 transitions, 1020 flow [2023-08-31 20:46:35,330 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:35,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 437 places, 471 transitions, 1020 flow [2023-08-31 20:46:35,331 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 437 places, 471 transitions, 1020 flow [2023-08-31 20:46:35,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 437 places, 471 transitions, 1020 flow [2023-08-31 20:46:35,883 INFO L130 PetriNetUnfolder]: 263/2061 cut-off events. [2023-08-31 20:46:35,883 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:46:35,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2293 conditions, 2061 events. 263/2061 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 12855 event pairs, 72 based on Foata normal form. 0/1767 useless extension candidates. Maximal degree in co-relation 1342. Up to 192 conditions per place. [2023-08-31 20:46:36,041 INFO L119 LiptonReduction]: Number of co-enabled transitions 158112 [2023-08-31 20:46:39,974 INFO L134 LiptonReduction]: Checked pairs total: 932328 [2023-08-31 20:46:39,974 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-08-31 20:46:39,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:46:39,977 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;@2f0d962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:46:39,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:46:40,029 INFO L130 PetriNetUnfolder]: 33/340 cut-off events. [2023-08-31 20:46:40,030 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-31 20:46:40,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:46:40,030 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:46:40,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:46:40,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:46:40,031 INFO L85 PathProgramCache]: Analyzing trace with hash 557641933, now seen corresponding path program 1 times [2023-08-31 20:46:40,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:46:40,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647474676] [2023-08-31 20:46:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:46:40,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:46:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:40,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:46:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:40,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:46:40,112 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:46:40,112 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:46:40,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:46:40,112 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:46:40,113 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:46:40,113 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:46:40,113 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:46:40,171 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:46:40,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 495 places, 534 transitions, 1166 flow [2023-08-31 20:46:41,153 INFO L130 PetriNetUnfolder]: 530/3631 cut-off events. [2023-08-31 20:46:41,154 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:46:41,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4129 conditions, 3631 events. 530/3631 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 26687 event pairs, 201 based on Foata normal form. 0/3129 useless extension candidates. Maximal degree in co-relation 2279. Up to 448 conditions per place. [2023-08-31 20:46:41,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 495 places, 534 transitions, 1166 flow [2023-08-31 20:46:41,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 495 places, 534 transitions, 1166 flow [2023-08-31 20:46:41,290 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:41,290 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 495 places, 534 transitions, 1166 flow [2023-08-31 20:46:41,290 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 495 places, 534 transitions, 1166 flow [2023-08-31 20:46:41,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 495 places, 534 transitions, 1166 flow [2023-08-31 20:46:42,363 INFO L130 PetriNetUnfolder]: 530/3631 cut-off events. [2023-08-31 20:46:42,363 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:46:42,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4129 conditions, 3631 events. 530/3631 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 26687 event pairs, 201 based on Foata normal form. 0/3129 useless extension candidates. Maximal degree in co-relation 2279. Up to 448 conditions per place. [2023-08-31 20:46:42,664 INFO L119 LiptonReduction]: Number of co-enabled transitions 211792 [2023-08-31 20:46:46,562 INFO L134 LiptonReduction]: Checked pairs total: 1127301 [2023-08-31 20:46:46,562 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-08-31 20:46:46,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:46:46,564 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;@2f0d962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:46:46,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:46:46,618 INFO L130 PetriNetUnfolder]: 43/431 cut-off events. [2023-08-31 20:46:46,619 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2023-08-31 20:46:46,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:46:46,619 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:46:46,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:46:46,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:46:46,620 INFO L85 PathProgramCache]: Analyzing trace with hash 779970480, now seen corresponding path program 1 times [2023-08-31 20:46:46,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:46:46,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617511969] [2023-08-31 20:46:46,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:46:46,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:46:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:46,649 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:46:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:46,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:46:46,688 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:46:46,688 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:46:46,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:46:46,688 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:46:46,689 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:46:46,689 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:46:46,689 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:46:46,754 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:46:46,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 553 places, 597 transitions, 1314 flow [2023-08-31 20:46:48,733 INFO L130 PetriNetUnfolder]: 1117/6737 cut-off events. [2023-08-31 20:46:48,734 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:46:48,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 6737 events. 1117/6737 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 58331 event pairs, 522 based on Foata normal form. 0/5835 useless extension candidates. Maximal degree in co-relation 4113. Up to 1024 conditions per place. [2023-08-31 20:46:48,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 553 places, 597 transitions, 1314 flow [2023-08-31 20:46:49,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 553 places, 597 transitions, 1314 flow [2023-08-31 20:46:49,051 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:49,051 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 553 places, 597 transitions, 1314 flow [2023-08-31 20:46:49,051 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 553 places, 597 transitions, 1314 flow [2023-08-31 20:46:49,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 553 places, 597 transitions, 1314 flow [2023-08-31 20:46:50,820 INFO L130 PetriNetUnfolder]: 1117/6737 cut-off events. [2023-08-31 20:46:50,820 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:46:50,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 6737 events. 1117/6737 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 58331 event pairs, 522 based on Foata normal form. 0/5835 useless extension candidates. Maximal degree in co-relation 4113. Up to 1024 conditions per place. [2023-08-31 20:46:51,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 273280 [2023-08-31 20:46:55,948 INFO L134 LiptonReduction]: Checked pairs total: 1471495 [2023-08-31 20:46:55,948 INFO L136 LiptonReduction]: Total number of compositions: 273 [2023-08-31 20:46:55,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:46:55,951 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;@2f0d962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:46:55,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:46:56,027 INFO L130 PetriNetUnfolder]: 55/544 cut-off events. [2023-08-31 20:46:56,027 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2023-08-31 20:46:56,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:46:56,028 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:46:56,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:46:56,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:46:56,028 INFO L85 PathProgramCache]: Analyzing trace with hash -230185550, now seen corresponding path program 1 times [2023-08-31 20:46:56,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:46:56,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44744520] [2023-08-31 20:46:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:46:56,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:46:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:56,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:46:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:56,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:46:56,071 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:46:56,071 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:46:56,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:46:56,072 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:46:56,072 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:46:56,073 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:46:56,073 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:46:56,124 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:46:56,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 611 places, 660 transitions, 1464 flow [2023-08-31 20:47:00,157 INFO L130 PetriNetUnfolder]: 2408/12979 cut-off events. [2023-08-31 20:47:00,158 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:47:00,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15356 conditions, 12979 events. 2408/12979 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 130099 event pairs, 1291 based on Foata normal form. 0/11293 useless extension candidates. Maximal degree in co-relation 7804. Up to 2304 conditions per place. [2023-08-31 20:47:00,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 611 places, 660 transitions, 1464 flow [2023-08-31 20:47:00,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 611 places, 660 transitions, 1464 flow [2023-08-31 20:47:00,606 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:00,606 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 611 places, 660 transitions, 1464 flow [2023-08-31 20:47:00,606 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 611 places, 660 transitions, 1464 flow [2023-08-31 20:47:00,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 611 places, 660 transitions, 1464 flow [2023-08-31 20:47:04,669 INFO L130 PetriNetUnfolder]: 2408/12979 cut-off events. [2023-08-31 20:47:04,669 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:47:05,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15356 conditions, 12979 events. 2408/12979 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 130099 event pairs, 1291 based on Foata normal form. 0/11293 useless extension candidates. Maximal degree in co-relation 7804. Up to 2304 conditions per place. [2023-08-31 20:47:05,991 INFO L119 LiptonReduction]: Number of co-enabled transitions 342576 [2023-08-31 20:47:10,495 INFO L134 LiptonReduction]: Checked pairs total: 1850706 [2023-08-31 20:47:10,495 INFO L136 LiptonReduction]: Total number of compositions: 299 [2023-08-31 20:47:10,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:10,498 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;@2f0d962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:10,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:10,597 INFO L130 PetriNetUnfolder]: 70/674 cut-off events. [2023-08-31 20:47:10,598 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2023-08-31 20:47:10,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:10,598 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:47:10,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:10,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:10,598 INFO L85 PathProgramCache]: Analyzing trace with hash -411001776, now seen corresponding path program 1 times [2023-08-31 20:47:10,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:10,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866483489] [2023-08-31 20:47:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:10,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:10,632 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:10,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:10,653 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:10,653 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:10,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:47:10,653 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:10,654 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:10,654 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:10,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:47:10,719 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:47:10,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 669 places, 723 transitions, 1616 flow [2023-08-31 20:47:19,399 INFO L130 PetriNetUnfolder]: 5235/25621 cut-off events. [2023-08-31 20:47:19,399 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:47:20,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30827 conditions, 25621 events. 5235/25621 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 290162 event pairs, 3084 based on Foata normal form. 0/22383 useless extension candidates. Maximal degree in co-relation 15336. Up to 5120 conditions per place. [2023-08-31 20:47:20,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 669 places, 723 transitions, 1616 flow [2023-08-31 20:47:20,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 669 places, 723 transitions, 1616 flow [2023-08-31 20:47:20,724 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:47:20,724 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 669 places, 723 transitions, 1616 flow [2023-08-31 20:47:20,725 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 669 places, 723 transitions, 1616 flow [2023-08-31 20:47:20,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 669 places, 723 transitions, 1616 flow [2023-08-31 20:47:29,707 INFO L130 PetriNetUnfolder]: 5235/25621 cut-off events. [2023-08-31 20:47:29,708 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:47:30,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30827 conditions, 25621 events. 5235/25621 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 290162 event pairs, 3084 based on Foata normal form. 0/22383 useless extension candidates. Maximal degree in co-relation 15336. Up to 5120 conditions per place. [2023-08-31 20:47:33,048 INFO L119 LiptonReduction]: Number of co-enabled transitions 419680 [2023-08-31 20:47:37,876 INFO L134 LiptonReduction]: Checked pairs total: 2584979 [2023-08-31 20:47:37,876 INFO L136 LiptonReduction]: Total number of compositions: 324 [2023-08-31 20:47:37,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:47:37,878 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;@2f0d962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:47:37,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:47:38,009 INFO L130 PetriNetUnfolder]: 90/834 cut-off events. [2023-08-31 20:47:38,009 INFO L131 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2023-08-31 20:47:38,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:47:38,009 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:47:38,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:47:38,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:47:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash -834767948, now seen corresponding path program 1 times [2023-08-31 20:47:38,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:47:38,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954760220] [2023-08-31 20:47:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:47:38,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:47:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:38,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:47:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:47:38,061 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:47:38,062 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:47:38,062 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:47:38,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:47:38,062 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:47:38,063 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:47:38,063 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:47:38,063 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:47:38,122 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:47:38,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 727 places, 786 transitions, 1770 flow [2023-08-31 20:47:57,746 INFO L130 PetriNetUnfolder]: 11390/51319 cut-off events. [2023-08-31 20:47:57,746 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:48:00,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62683 conditions, 51319 events. 11390/51319 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 650150 event pairs, 7181 based on Foata normal form. 0/44993 useless extension candidates. Maximal degree in co-relation 30805. Up to 11264 conditions per place. [2023-08-31 20:48:00,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 727 places, 786 transitions, 1770 flow [2023-08-31 20:48:01,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 727 places, 786 transitions, 1770 flow [2023-08-31 20:48:01,432 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:48:01,432 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 727 places, 786 transitions, 1770 flow [2023-08-31 20:48:01,432 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 727 places, 786 transitions, 1770 flow [2023-08-31 20:48:01,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 727 places, 786 transitions, 1770 flow [2023-08-31 20:48:20,791 INFO L130 PetriNetUnfolder]: 11390/51319 cut-off events. [2023-08-31 20:48:20,792 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:48:24,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62683 conditions, 51319 events. 11390/51319 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 650150 event pairs, 7181 based on Foata normal form. 0/44993 useless extension candidates. Maximal degree in co-relation 30805. Up to 11264 conditions per place. [2023-08-31 20:48:33,439 INFO L119 LiptonReduction]: Number of co-enabled transitions 504592 [2023-08-31 20:48:38,417 INFO L134 LiptonReduction]: Checked pairs total: 2732978 [2023-08-31 20:48:38,418 INFO L136 LiptonReduction]: Total number of compositions: 347 [2023-08-31 20:48:38,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:48:38,419 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;@2f0d962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:48:38,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:48:38,569 INFO L130 PetriNetUnfolder]: 119/1047 cut-off events. [2023-08-31 20:48:38,570 INFO L131 PetriNetUnfolder]: For 382/382 co-relation queries the response was YES. [2023-08-31 20:48:38,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:48:38,570 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:48:38,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:48:38,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:48:38,570 INFO L85 PathProgramCache]: Analyzing trace with hash 374430760, now seen corresponding path program 1 times [2023-08-31 20:48:38,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:48:38,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942414891] [2023-08-31 20:48:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:48:38,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:48:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:48:38,594 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:48:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:48:38,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:48:38,616 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:48:38,617 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:48:38,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:48:38,617 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:48:38,617 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:48:38,618 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:48:38,618 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:48:38,683 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:48:38,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 785 places, 849 transitions, 1926 flow [2023-08-31 20:49:21,721 INFO L130 PetriNetUnfolder]: 24713/103641 cut-off events. [2023-08-31 20:49:21,721 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:49:32,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128332 conditions, 103641 events. 24713/103641 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 1442628 event pairs, 16398 based on Foata normal form. 0/91155 useless extension candidates. Maximal degree in co-relation 62659. Up to 24576 conditions per place. [2023-08-31 20:49:32,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 785 places, 849 transitions, 1926 flow [2023-08-31 20:49:34,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 785 places, 849 transitions, 1926 flow [2023-08-31 20:49:34,539 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:49:34,539 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 785 places, 849 transitions, 1926 flow [2023-08-31 20:49:34,540 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 785 places, 849 transitions, 1926 flow [2023-08-31 20:49:34,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 785 places, 849 transitions, 1926 flow [2023-08-31 20:50:18,275 INFO L130 PetriNetUnfolder]: 24713/103641 cut-off events. [2023-08-31 20:50:18,275 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:50:28,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128332 conditions, 103641 events. 24713/103641 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 1442628 event pairs, 16398 based on Foata normal form. 0/91155 useless extension candidates. Maximal degree in co-relation 62659. Up to 24576 conditions per place. [2023-08-31 20:50:47,074 INFO L119 LiptonReduction]: Number of co-enabled transitions 597312 [2023-08-31 20:50:52,332 INFO L134 LiptonReduction]: Checked pairs total: 3263258 [2023-08-31 20:50:52,332 INFO L136 LiptonReduction]: Total number of compositions: 373 [2023-08-31 20:50:52,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:52,334 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;@2f0d962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:52,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:52,545 INFO L130 PetriNetUnfolder]: 163/1328 cut-off events. [2023-08-31 20:50:52,545 INFO L131 PetriNetUnfolder]: For 523/523 co-relation queries the response was YES. [2023-08-31 20:50:52,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:52,545 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 20:50:52,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:52,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:52,545 INFO L85 PathProgramCache]: Analyzing trace with hash -668772933, now seen corresponding path program 1 times [2023-08-31 20:50:52,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:52,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121374165] [2023-08-31 20:50:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:52,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:52,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:52,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:52,589 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:52,589 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:52,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:50:52,589 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:52,590 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:52,590 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:52,590 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:50:52,658 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:50:52,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 843 places, 912 transitions, 2084 flow