./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:46:09,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:46:09,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:46:09,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:46:09,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:46:09,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:46:09,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:46:09,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:46:09,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:46:09,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:46:09,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:46:09,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:46:09,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:46:09,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:46:09,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:46:09,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:46:09,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:46:09,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:46:09,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:46:09,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:46:09,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:46:09,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:46:09,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:46:09,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:46:09,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:46:09,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:46:09,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:46:09,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:46:09,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:46:09,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:46:09,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:46:09,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:46:09,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:46:09,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:46:09,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:46:09,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:46:09,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:46:09,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:46:09,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:46:09,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:46:09,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:46:09,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:46:09,267 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:46:09,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:46:09,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:46:09,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:46:09,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:46:09,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:46:09,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:46:09,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:46:09,270 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:46:09,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:46:09,271 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:46:09,272 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:46:09,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:46:09,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:46:09,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:46:09,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:46:09,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:46:09,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:46:09,273 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:46:09,273 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:46:09,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:46:09,274 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:46:09,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:46:09,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:46:09,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:46:09,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:46:09,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:46:09,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:46:09,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:46:09,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:46:09,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:46:09,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:46:09,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:46:09,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:46:09,277 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:46:09,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:46:09,277 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:46:09,277 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:46:09,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:46:09,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:46:09,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:46:09,621 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:46:09,622 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:46:09,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-09-01 06:46:10,755 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:46:11,055 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:46:11,059 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-09-01 06:46:11,072 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99d58d739/04ec93314e034e19a42cae168ee6db0f/FLAGd4a33891e [2023-09-01 06:46:11,085 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99d58d739/04ec93314e034e19a42cae168ee6db0f [2023-09-01 06:46:11,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:46:11,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:46:11,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:46:11,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:46:11,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:46:11,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec1217e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11, skipping insertion in model container [2023-09-01 06:46:11,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:46:11,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:46:11,496 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2023-09-01 06:46:11,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:46:11,533 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:46:11,588 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2023-09-01 06:46:11,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:46:11,640 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:46:11,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11 WrapperNode [2023-09-01 06:46:11,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:46:11,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:46:11,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:46:11,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:46:11,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,697 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2023-09-01 06:46:11,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:46:11,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:46:11,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:46:11,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:46:11,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,740 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:46:11,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:46:11,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:46:11,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:46:11,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11" (1/1) ... [2023-09-01 06:46:11,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:46:11,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:46:11,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 06:46:11,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 06:46:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:46:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:46:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:46:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:46:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:46:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:46:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:46:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:46:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:46:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:46:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:46:11,831 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:46:11,990 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:46:11,992 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:46:12,201 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:46:12,208 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:46:12,208 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 06:46:12,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:46:12 BoogieIcfgContainer [2023-09-01 06:46:12,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:46:12,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:46:12,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:46:12,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:46:12,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:46:11" (1/3) ... [2023-09-01 06:46:12,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c577fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:46:12, skipping insertion in model container [2023-09-01 06:46:12,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:46:11" (2/3) ... [2023-09-01 06:46:12,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c577fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:46:12, skipping insertion in model container [2023-09-01 06:46:12,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:46:12" (3/3) ... [2023-09-01 06:46:12,218 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-09-01 06:46:12,225 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:46:12,234 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:46:12,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:46:12,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:46:12,321 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:46:12,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 123 transitions, 254 flow [2023-09-01 06:46:12,427 INFO L130 PetriNetUnfolder]: 17/154 cut-off events. [2023-09-01 06:46:12,427 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:46:12,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 154 events. 17/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 371 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2023-09-01 06:46:12,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 123 transitions, 254 flow [2023-09-01 06:46:12,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 114 transitions, 233 flow [2023-09-01 06:46:12,441 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:12,449 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 114 transitions, 233 flow [2023-09-01 06:46:12,452 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 114 transitions, 233 flow [2023-09-01 06:46:12,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 114 transitions, 233 flow [2023-09-01 06:46:12,488 INFO L130 PetriNetUnfolder]: 16/145 cut-off events. [2023-09-01 06:46:12,488 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:46:12,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 145 events. 16/145 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 355 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2023-09-01 06:46:12,491 INFO L119 LiptonReduction]: Number of co-enabled transitions 3280 [2023-09-01 06:46:15,614 INFO L134 LiptonReduction]: Checked pairs total: 5747 [2023-09-01 06:46:15,614 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-09-01 06:46:15,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:15,644 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;@170f23cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:15,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:15,655 INFO L130 PetriNetUnfolder]: 2/23 cut-off events. [2023-09-01 06:46:15,655 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:46:15,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:15,657 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:46:15,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:15,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:15,662 INFO L85 PathProgramCache]: Analyzing trace with hash 995959738, now seen corresponding path program 1 times [2023-09-01 06:46:15,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:15,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978596261] [2023-09-01 06:46:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:15,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:15,770 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:15,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:15,866 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:15,867 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:15,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:46:15,869 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:15,872 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:15,873 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:15,873 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:46:15,894 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:46:15,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2023-09-01 06:46:15,935 INFO L130 PetriNetUnfolder]: 31/263 cut-off events. [2023-09-01 06:46:15,936 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:46:15,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 263 events. 31/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 798 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-09-01 06:46:15,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 165 transitions, 348 flow [2023-09-01 06:46:15,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 165 transitions, 348 flow [2023-09-01 06:46:15,941 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:15,941 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 165 transitions, 348 flow [2023-09-01 06:46:15,941 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 165 transitions, 348 flow [2023-09-01 06:46:15,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2023-09-01 06:46:15,972 INFO L130 PetriNetUnfolder]: 31/263 cut-off events. [2023-09-01 06:46:15,972 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:46:15,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 263 events. 31/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 798 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-09-01 06:46:15,981 INFO L119 LiptonReduction]: Number of co-enabled transitions 11280 [2023-09-01 06:46:19,198 INFO L134 LiptonReduction]: Checked pairs total: 25862 [2023-09-01 06:46:19,199 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-09-01 06:46:19,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:19,202 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;@170f23cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:19,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:19,207 INFO L130 PetriNetUnfolder]: 10/60 cut-off events. [2023-09-01 06:46:19,208 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:46:19,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:19,208 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:46:19,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:19,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:19,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1803662375, now seen corresponding path program 1 times [2023-09-01 06:46:19,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:19,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803094688] [2023-09-01 06:46:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:19,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:19,236 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:19,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:19,261 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:19,262 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:19,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:46:19,262 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:19,263 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:19,263 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:19,263 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:46:19,283 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:46:19,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 207 transitions, 444 flow [2023-09-01 06:46:19,350 INFO L130 PetriNetUnfolder]: 50/411 cut-off events. [2023-09-01 06:46:19,351 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:46:19,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 411 events. 50/411 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1414 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-09-01 06:46:19,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 207 transitions, 444 flow [2023-09-01 06:46:19,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 207 transitions, 444 flow [2023-09-01 06:46:19,364 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:19,364 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 207 transitions, 444 flow [2023-09-01 06:46:19,364 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 207 transitions, 444 flow [2023-09-01 06:46:19,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 207 transitions, 444 flow [2023-09-01 06:46:19,416 INFO L130 PetriNetUnfolder]: 50/411 cut-off events. [2023-09-01 06:46:19,416 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:46:19,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 411 events. 50/411 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1414 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-09-01 06:46:19,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 22080 [2023-09-01 06:46:23,031 INFO L134 LiptonReduction]: Checked pairs total: 55874 [2023-09-01 06:46:23,032 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-09-01 06:46:23,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:23,035 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;@170f23cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:23,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:23,042 INFO L130 PetriNetUnfolder]: 19/101 cut-off events. [2023-09-01 06:46:23,043 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:46:23,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:23,043 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:46:23,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:23,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:23,044 INFO L85 PathProgramCache]: Analyzing trace with hash -2114587899, now seen corresponding path program 1 times [2023-09-01 06:46:23,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:23,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641706429] [2023-09-01 06:46:23,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:23,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:23,074 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:23,098 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:23,098 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:23,098 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:23,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:46:23,099 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:23,099 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:23,100 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:23,100 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:46:23,122 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:46:23,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 249 transitions, 542 flow [2023-09-01 06:46:23,213 INFO L130 PetriNetUnfolder]: 81/639 cut-off events. [2023-09-01 06:46:23,214 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:46:23,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 639 events. 81/639 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2573 event pairs, 6 based on Foata normal form. 0/504 useless extension candidates. Maximal degree in co-relation 431. Up to 32 conditions per place. [2023-09-01 06:46:23,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 249 transitions, 542 flow [2023-09-01 06:46:23,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 249 transitions, 542 flow [2023-09-01 06:46:23,227 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:23,227 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 249 transitions, 542 flow [2023-09-01 06:46:23,228 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 249 transitions, 542 flow [2023-09-01 06:46:23,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 249 transitions, 542 flow [2023-09-01 06:46:23,320 INFO L130 PetriNetUnfolder]: 81/639 cut-off events. [2023-09-01 06:46:23,320 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:46:23,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 639 events. 81/639 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2573 event pairs, 6 based on Foata normal form. 0/504 useless extension candidates. Maximal degree in co-relation 431. Up to 32 conditions per place. [2023-09-01 06:46:23,347 INFO L119 LiptonReduction]: Number of co-enabled transitions 36320 [2023-09-01 06:46:26,834 INFO L134 LiptonReduction]: Checked pairs total: 99920 [2023-09-01 06:46:26,834 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-09-01 06:46:26,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:26,837 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;@170f23cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:26,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:26,849 INFO L130 PetriNetUnfolder]: 29/150 cut-off events. [2023-09-01 06:46:26,849 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:46:26,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:26,850 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:46:26,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:26,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:26,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1568551052, now seen corresponding path program 1 times [2023-09-01 06:46:26,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:26,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824716662] [2023-09-01 06:46:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:26,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:26,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:26,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:26,937 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:26,937 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:26,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:46:26,938 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:26,938 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:26,938 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:26,939 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:46:26,972 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:46:26,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 291 transitions, 642 flow [2023-09-01 06:46:27,129 INFO L130 PetriNetUnfolder]: 140/1031 cut-off events. [2023-09-01 06:46:27,129 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:46:27,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 1031 events. 140/1031 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4852 event pairs, 23 based on Foata normal form. 0/815 useless extension candidates. Maximal degree in co-relation 684. Up to 80 conditions per place. [2023-09-01 06:46:27,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 291 transitions, 642 flow [2023-09-01 06:46:27,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 291 transitions, 642 flow [2023-09-01 06:46:27,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:27,158 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 262 places, 291 transitions, 642 flow [2023-09-01 06:46:27,159 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 262 places, 291 transitions, 642 flow [2023-09-01 06:46:27,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 291 transitions, 642 flow [2023-09-01 06:46:27,312 INFO L130 PetriNetUnfolder]: 140/1031 cut-off events. [2023-09-01 06:46:27,313 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:46:27,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 1031 events. 140/1031 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4852 event pairs, 23 based on Foata normal form. 0/815 useless extension candidates. Maximal degree in co-relation 684. Up to 80 conditions per place. [2023-09-01 06:46:27,371 INFO L119 LiptonReduction]: Number of co-enabled transitions 54000 [2023-09-01 06:46:31,054 INFO L134 LiptonReduction]: Checked pairs total: 155847 [2023-09-01 06:46:31,054 INFO L136 LiptonReduction]: Total number of compositions: 229 [2023-09-01 06:46:31,055 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:31,056 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;@170f23cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:31,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:31,074 INFO L130 PetriNetUnfolder]: 41/208 cut-off events. [2023-09-01 06:46:31,074 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:46:31,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:31,075 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:46:31,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:31,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:31,075 INFO L85 PathProgramCache]: Analyzing trace with hash -919131755, now seen corresponding path program 1 times [2023-09-01 06:46:31,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:31,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940538480] [2023-09-01 06:46:31,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:31,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:31,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:31,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:31,122 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:31,122 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:31,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:46:31,122 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:31,123 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:31,123 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:31,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:46:31,162 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:46:31,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 333 transitions, 744 flow [2023-09-01 06:46:31,517 INFO L130 PetriNetUnfolder]: 263/1759 cut-off events. [2023-09-01 06:46:31,518 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:46:31,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 1759 events. 263/1759 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10213 event pairs, 72 based on Foata normal form. 0/1398 useless extension candidates. Maximal degree in co-relation 1130. Up to 192 conditions per place. [2023-09-01 06:46:31,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 299 places, 333 transitions, 744 flow [2023-09-01 06:46:31,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 333 transitions, 744 flow [2023-09-01 06:46:31,571 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:31,572 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 299 places, 333 transitions, 744 flow [2023-09-01 06:46:31,572 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 299 places, 333 transitions, 744 flow [2023-09-01 06:46:31,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 333 transitions, 744 flow [2023-09-01 06:46:31,937 INFO L130 PetriNetUnfolder]: 263/1759 cut-off events. [2023-09-01 06:46:31,937 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:46:31,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 1759 events. 263/1759 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10213 event pairs, 72 based on Foata normal form. 0/1398 useless extension candidates. Maximal degree in co-relation 1130. Up to 192 conditions per place. [2023-09-01 06:46:32,025 INFO L119 LiptonReduction]: Number of co-enabled transitions 75120 [2023-09-01 06:46:36,368 INFO L134 LiptonReduction]: Checked pairs total: 218872 [2023-09-01 06:46:36,369 INFO L136 LiptonReduction]: Total number of compositions: 261 [2023-09-01 06:46:36,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:36,371 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;@170f23cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:36,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:36,395 INFO L130 PetriNetUnfolder]: 56/281 cut-off events. [2023-09-01 06:46:36,395 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:46:36,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:36,395 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:46:36,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:36,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2007913614, now seen corresponding path program 1 times [2023-09-01 06:46:36,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:36,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418931021] [2023-09-01 06:46:36,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:36,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:36,419 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:36,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:36,440 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:36,440 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:36,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:46:36,441 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:36,441 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:36,441 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:36,442 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:46:36,467 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:46:36,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 375 transitions, 848 flow [2023-09-01 06:46:37,183 INFO L130 PetriNetUnfolder]: 530/3175 cut-off events. [2023-09-01 06:46:37,184 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:46:37,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 3175 events. 530/3175 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 22155 event pairs, 201 based on Foata normal form. 0/2541 useless extension candidates. Maximal degree in co-relation 1977. Up to 448 conditions per place. [2023-09-01 06:46:37,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 375 transitions, 848 flow [2023-09-01 06:46:37,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 375 transitions, 848 flow [2023-09-01 06:46:37,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:37,287 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 336 places, 375 transitions, 848 flow [2023-09-01 06:46:37,287 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 336 places, 375 transitions, 848 flow [2023-09-01 06:46:37,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 375 transitions, 848 flow [2023-09-01 06:46:37,989 INFO L130 PetriNetUnfolder]: 530/3175 cut-off events. [2023-09-01 06:46:37,990 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:46:38,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 3175 events. 530/3175 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 22155 event pairs, 201 based on Foata normal form. 0/2541 useless extension candidates. Maximal degree in co-relation 1977. Up to 448 conditions per place. [2023-09-01 06:46:38,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 99680 [2023-09-01 06:46:42,397 INFO L134 LiptonReduction]: Checked pairs total: 264331 [2023-09-01 06:46:42,397 INFO L136 LiptonReduction]: Total number of compositions: 290 [2023-09-01 06:46:42,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:42,399 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;@170f23cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:42,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:42,426 INFO L130 PetriNetUnfolder]: 76/378 cut-off events. [2023-09-01 06:46:42,427 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:46:42,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:42,427 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:46:42,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:42,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:42,428 INFO L85 PathProgramCache]: Analyzing trace with hash -440533706, now seen corresponding path program 1 times [2023-09-01 06:46:42,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:42,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768421147] [2023-09-01 06:46:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:42,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:42,461 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:42,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:42,513 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:42,514 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:42,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:46:42,514 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:42,515 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:42,515 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:42,515 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:46:42,570 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:46:42,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 417 transitions, 954 flow [2023-09-01 06:46:43,966 INFO L130 PetriNetUnfolder]: 1117/5999 cut-off events. [2023-09-01 06:46:43,966 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:46:44,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7084 conditions, 5999 events. 1117/5999 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 49836 event pairs, 522 based on Foata normal form. 0/4836 useless extension candidates. Maximal degree in co-relation 3657. Up to 1024 conditions per place. [2023-09-01 06:46:44,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 373 places, 417 transitions, 954 flow [2023-09-01 06:46:44,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 417 transitions, 954 flow [2023-09-01 06:46:44,131 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:44,131 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 373 places, 417 transitions, 954 flow [2023-09-01 06:46:44,132 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 373 places, 417 transitions, 954 flow [2023-09-01 06:46:44,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 417 transitions, 954 flow [2023-09-01 06:46:45,487 INFO L130 PetriNetUnfolder]: 1117/5999 cut-off events. [2023-09-01 06:46:45,487 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:46:45,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7084 conditions, 5999 events. 1117/5999 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 49836 event pairs, 522 based on Foata normal form. 0/4836 useless extension candidates. Maximal degree in co-relation 3657. Up to 1024 conditions per place. [2023-09-01 06:46:45,773 INFO L119 LiptonReduction]: Number of co-enabled transitions 127680 [2023-09-01 06:46:50,442 INFO L134 LiptonReduction]: Checked pairs total: 384442 [2023-09-01 06:46:50,442 INFO L136 LiptonReduction]: Total number of compositions: 325 [2023-09-01 06:46:50,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:50,446 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;@170f23cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:50,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:50,503 INFO L130 PetriNetUnfolder]: 105/511 cut-off events. [2023-09-01 06:46:50,503 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:46:50,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:50,504 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:46:50,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:50,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:50,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1031139850, now seen corresponding path program 1 times [2023-09-01 06:46:50,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:50,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417186466] [2023-09-01 06:46:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:50,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:50,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:50,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:50,576 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:50,576 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:50,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:46:50,577 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:50,577 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:50,577 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:50,578 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:46:50,632 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:46:50,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 410 places, 459 transitions, 1062 flow [2023-09-01 06:46:53,417 INFO L130 PetriNetUnfolder]: 2408/11703 cut-off events. [2023-09-01 06:46:53,418 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:46:53,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14080 conditions, 11703 events. 2408/11703 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 113387 event pairs, 1291 based on Foata normal form. 0/9499 useless extension candidates. Maximal degree in co-relation 7066. Up to 2304 conditions per place. [2023-09-01 06:46:53,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 410 places, 459 transitions, 1062 flow [2023-09-01 06:46:53,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 410 places, 459 transitions, 1062 flow [2023-09-01 06:46:53,734 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:53,734 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 410 places, 459 transitions, 1062 flow [2023-09-01 06:46:53,734 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 410 places, 459 transitions, 1062 flow [2023-09-01 06:46:53,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 410 places, 459 transitions, 1062 flow [2023-09-01 06:46:56,405 INFO L130 PetriNetUnfolder]: 2408/11703 cut-off events. [2023-09-01 06:46:56,405 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:46:56,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14080 conditions, 11703 events. 2408/11703 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 113387 event pairs, 1291 based on Foata normal form. 0/9499 useless extension candidates. Maximal degree in co-relation 7066. Up to 2304 conditions per place. [2023-09-01 06:46:57,172 INFO L119 LiptonReduction]: Number of co-enabled transitions 159120 [2023-09-01 06:47:01,816 INFO L134 LiptonReduction]: Checked pairs total: 431105 [2023-09-01 06:47:01,816 INFO L136 LiptonReduction]: Total number of compositions: 353 [2023-09-01 06:47:01,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:47:01,818 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;@170f23cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:47:01,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:47:01,870 INFO L130 PetriNetUnfolder]: 150/702 cut-off events. [2023-09-01 06:47:01,870 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 06:47:01,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:47:01,870 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:47:01,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:47:01,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:47:01,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1222961497, now seen corresponding path program 1 times [2023-09-01 06:47:01,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:47:01,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53498732] [2023-09-01 06:47:01,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:47:01,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:47:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:01,919 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:47:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:01,941 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:47:01,941 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:47:01,941 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:47:01,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:47:01,942 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:47:01,942 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:47:01,942 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:47:01,942 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:47:01,975 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:47:01,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 501 transitions, 1172 flow [2023-09-01 06:47:07,994 INFO L130 PetriNetUnfolder]: 5235/23295 cut-off events. [2023-09-01 06:47:07,994 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:47:08,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28501 conditions, 23295 events. 5235/23295 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 255984 event pairs, 3084 based on Foata normal form. 0/19026 useless extension candidates. Maximal degree in co-relation 14060. Up to 5120 conditions per place. [2023-09-01 06:47:08,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 447 places, 501 transitions, 1172 flow [2023-09-01 06:47:08,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 501 transitions, 1172 flow [2023-09-01 06:47:08,861 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:47:08,861 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 447 places, 501 transitions, 1172 flow [2023-09-01 06:47:08,862 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 447 places, 501 transitions, 1172 flow [2023-09-01 06:47:08,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 501 transitions, 1172 flow [2023-09-01 06:47:14,776 INFO L130 PetriNetUnfolder]: 5235/23295 cut-off events. [2023-09-01 06:47:14,776 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:47:15,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28501 conditions, 23295 events. 5235/23295 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 255984 event pairs, 3084 based on Foata normal form. 0/19026 useless extension candidates. Maximal degree in co-relation 14060. Up to 5120 conditions per place. [2023-09-01 06:47:16,599 INFO L119 LiptonReduction]: Number of co-enabled transitions 194000 [2023-09-01 06:47:21,603 INFO L134 LiptonReduction]: Checked pairs total: 534572 [2023-09-01 06:47:21,604 INFO L136 LiptonReduction]: Total number of compositions: 384 [2023-09-01 06:47:21,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:47:21,606 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@170f23cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:47:21,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:47:21,726 INFO L130 PetriNetUnfolder]: 224/986 cut-off events. [2023-09-01 06:47:21,726 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 06:47:21,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:47:21,726 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:47:21,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:47:21,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:47:21,727 INFO L85 PathProgramCache]: Analyzing trace with hash 255929277, now seen corresponding path program 1 times [2023-09-01 06:47:21,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:47:21,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630261909] [2023-09-01 06:47:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:47:21,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:47:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:21,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:47:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:21,773 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:47:21,774 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:47:21,774 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:47:21,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:47:21,774 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:47:21,775 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:47:21,775 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:47:21,775 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:47:21,810 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:47:21,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 484 places, 543 transitions, 1284 flow [2023-09-01 06:47:35,065 INFO L130 PetriNetUnfolder]: 11390/46919 cut-off events. [2023-09-01 06:47:35,066 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:47:37,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58283 conditions, 46919 events. 11390/46919 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 579415 event pairs, 7181 based on Foata normal form. 0/38537 useless extension candidates. Maximal degree in co-relation 28479. Up to 11264 conditions per place. [2023-09-01 06:47:37,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 484 places, 543 transitions, 1284 flow [2023-09-01 06:47:38,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 484 places, 543 transitions, 1284 flow [2023-09-01 06:47:38,930 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:47:38,930 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 484 places, 543 transitions, 1284 flow [2023-09-01 06:47:38,930 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 484 places, 543 transitions, 1284 flow [2023-09-01 06:47:38,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 484 places, 543 transitions, 1284 flow [2023-09-01 06:47:51,937 INFO L130 PetriNetUnfolder]: 11390/46919 cut-off events. [2023-09-01 06:47:51,937 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:47:53,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58283 conditions, 46919 events. 11390/46919 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 579415 event pairs, 7181 based on Foata normal form. 0/38537 useless extension candidates. Maximal degree in co-relation 28479. Up to 11264 conditions per place. [2023-09-01 06:47:56,965 INFO L119 LiptonReduction]: Number of co-enabled transitions 232320 [2023-09-01 06:48:02,486 INFO L134 LiptonReduction]: Checked pairs total: 633608 [2023-09-01 06:48:02,486 INFO L136 LiptonReduction]: Total number of compositions: 422 [2023-09-01 06:48:02,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:48:02,488 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;@170f23cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:48:02,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:48:02,641 INFO L130 PetriNetUnfolder]: 349/1419 cut-off events. [2023-09-01 06:48:02,641 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 06:48:02,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:48:02,641 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:48:02,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:48:02,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:48:02,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1123073298, now seen corresponding path program 1 times [2023-09-01 06:48:02,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:48:02,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502559597] [2023-09-01 06:48:02,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:48:02,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:48:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:48:02,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:48:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:48:02,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:48:02,690 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:48:02,691 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:48:02,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:48:02,691 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:48:02,691 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:48:02,692 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:48:02,692 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:48:02,728 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:48:02,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 521 places, 585 transitions, 1398 flow [2023-09-01 06:48:36,745 INFO L130 PetriNetUnfolder]: 24713/95119 cut-off events. [2023-09-01 06:48:36,745 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:48:43,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119810 conditions, 95119 events. 24713/95119 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1482. Compared 1292969 event pairs, 16398 based on Foata normal form. 0/78528 useless extension candidates. Maximal degree in co-relation 58260. Up to 24576 conditions per place. [2023-09-01 06:48:43,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 521 places, 585 transitions, 1398 flow [2023-09-01 06:48:45,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 521 places, 585 transitions, 1398 flow [2023-09-01 06:48:45,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:48:45,778 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 521 places, 585 transitions, 1398 flow [2023-09-01 06:48:45,778 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 521 places, 585 transitions, 1398 flow [2023-09-01 06:48:45,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 521 places, 585 transitions, 1398 flow [2023-09-01 06:49:15,476 INFO L130 PetriNetUnfolder]: 24713/95119 cut-off events. [2023-09-01 06:49:15,476 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:49:22,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119810 conditions, 95119 events. 24713/95119 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1482. Compared 1292969 event pairs, 16398 based on Foata normal form. 0/78528 useless extension candidates. Maximal degree in co-relation 58260. Up to 24576 conditions per place. [2023-09-01 06:49:35,757 INFO L119 LiptonReduction]: Number of co-enabled transitions 274080 [2023-09-01 06:49:41,491 INFO L134 LiptonReduction]: Checked pairs total: 760724 [2023-09-01 06:49:41,491 INFO L136 LiptonReduction]: Total number of compositions: 439 [2023-09-01 06:49:41,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:49:41,494 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@170f23cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:49:41,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:49:41,714 INFO L130 PetriNetUnfolder]: 560/2089 cut-off events. [2023-09-01 06:49:41,714 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 06:49:41,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:49:41,714 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:49:41,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:49:41,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:49:41,715 INFO L85 PathProgramCache]: Analyzing trace with hash -939645867, now seen corresponding path program 1 times [2023-09-01 06:49:41,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:49:41,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912278436] [2023-09-01 06:49:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:49:41,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:49:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:49:41,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:49:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:49:41,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:49:41,788 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:49:41,788 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:49:41,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:49:41,788 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:49:41,792 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:49:41,792 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:49:41,792 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:49:41,834 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:49:41,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 558 places, 627 transitions, 1514 flow [2023-09-01 06:50:50,449 INFO L130 PetriNetUnfolder]: 53396/193495 cut-off events. [2023-09-01 06:50:50,449 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:51:06,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246874 conditions, 193495 events. 53396/193495 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2890. Compared 2827171 event pairs, 36879 based on Foata normal form. 0/160503 useless extension candidates. Maximal degree in co-relation 119787. Up to 53248 conditions per place. [2023-09-01 06:51:06,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 558 places, 627 transitions, 1514 flow [2023-09-01 06:51:11,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 558 places, 627 transitions, 1514 flow [2023-09-01 06:51:11,059 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:51:11,060 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 558 places, 627 transitions, 1514 flow [2023-09-01 06:51:11,060 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 558 places, 627 transitions, 1514 flow [2023-09-01 06:51:11,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 558 places, 627 transitions, 1514 flow