./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_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_11-ptr_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 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --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 06:37:02,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:37:02,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:37:02,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:37:02,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:37:02,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:37:02,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:37:02,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:37:02,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:37:02,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:37:02,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:37:02,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:37:02,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:37:02,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:37:02,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:37:02,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:37:02,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:37:02,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:37:02,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:37:02,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:37:02,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:37:02,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:37:02,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:37:02,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:37:02,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:37:02,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:37:02,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:37:02,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:37:02,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:37:02,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:37:02,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:37:03,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:37:03,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:37:03,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:37:03,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:37:03,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:37:03,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:37:03,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:37:03,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:37:03,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:37:03,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:37:03,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:37:03,056 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:37:03,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:37:03,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:37:03,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:37:03,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:37:03,058 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:37:03,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:37:03,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:37:03,058 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:37:03,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:37:03,059 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:37:03,059 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:37:03,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:37:03,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:37:03,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:37:03,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:37:03,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:37:03,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:37:03,062 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:37:03,062 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:37:03,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:37:03,062 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:37:03,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:37:03,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:37:03,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:37:03,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:37:03,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:37:03,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:37:03,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:37:03,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:37:03,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:37:03,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:37:03,065 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:37:03,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:37:03,066 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:37:03,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:37:03,067 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:37:03,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:37:03,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:37:03,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:37:03,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:37:03,362 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:37:03,362 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:37:03,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-09-01 06:37:04,498 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:37:04,718 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:37:04,718 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-09-01 06:37:04,725 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa050273e/9813792b3d894c04b7dc30ae74f96144/FLAGeb9ee3a08 [2023-09-01 06:37:04,734 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa050273e/9813792b3d894c04b7dc30ae74f96144 [2023-09-01 06:37:04,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:37:04,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:37:04,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:37:04,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:37:04,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:37:04,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:37:04" (1/1) ... [2023-09-01 06:37:04,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5882d199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:04, skipping insertion in model container [2023-09-01 06:37:04,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:37:04" (1/1) ... [2023-09-01 06:37:04,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:37:04,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:37:05,031 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_11-ptr_racing.i[30176,30189] [2023-09-01 06:37:05,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:37:05,057 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:37:05,088 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_11-ptr_racing.i[30176,30189] [2023-09-01 06:37:05,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:37:05,135 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:37:05,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05 WrapperNode [2023-09-01 06:37:05,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:37:05,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:37:05,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:37:05,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:37:05,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05" (1/1) ... [2023-09-01 06:37:05,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05" (1/1) ... [2023-09-01 06:37:05,186 INFO L138 Inliner]: procedures = 170, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2023-09-01 06:37:05,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:37:05,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:37:05,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:37:05,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:37:05,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05" (1/1) ... [2023-09-01 06:37:05,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05" (1/1) ... [2023-09-01 06:37:05,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05" (1/1) ... [2023-09-01 06:37:05,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05" (1/1) ... [2023-09-01 06:37:05,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05" (1/1) ... [2023-09-01 06:37:05,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05" (1/1) ... [2023-09-01 06:37:05,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05" (1/1) ... [2023-09-01 06:37:05,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05" (1/1) ... [2023-09-01 06:37:05,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:37:05,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:37:05,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:37:05,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:37:05,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05" (1/1) ... [2023-09-01 06:37:05,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:37:05,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:37:05,248 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 06:37:05,271 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 06:37:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:37:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:37:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:37:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:37:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:37:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:37:05,277 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:37:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:37:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:37:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:37:05,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:37:05,278 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 06:37:05,385 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:37:05,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:37:05,595 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:37:05,600 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:37:05,600 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 06:37:05,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:37:05 BoogieIcfgContainer [2023-09-01 06:37:05,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:37:05,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:37:05,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:37:05,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:37:05,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:37:04" (1/3) ... [2023-09-01 06:37:05,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492e2c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:37:05, skipping insertion in model container [2023-09-01 06:37:05,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:37:05" (2/3) ... [2023-09-01 06:37:05,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492e2c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:37:05, skipping insertion in model container [2023-09-01 06:37:05,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:37:05" (3/3) ... [2023-09-01 06:37:05,607 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2023-09-01 06:37:05,612 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:37:05,618 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:37:05,618 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:37:05,618 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:37:05,656 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:37:05,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 130 transitions, 268 flow [2023-09-01 06:37:05,762 INFO L130 PetriNetUnfolder]: 17/164 cut-off events. [2023-09-01 06:37:05,763 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:37:05,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 164 events. 17/164 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 392 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-09-01 06:37:05,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 130 transitions, 268 flow [2023-09-01 06:37:05,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 121 transitions, 247 flow [2023-09-01 06:37:05,774 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:37:05,782 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 121 transitions, 247 flow [2023-09-01 06:37:05,784 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 121 transitions, 247 flow [2023-09-01 06:37:05,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 121 transitions, 247 flow [2023-09-01 06:37:05,820 INFO L130 PetriNetUnfolder]: 16/155 cut-off events. [2023-09-01 06:37:05,820 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:37:05,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 155 events. 16/155 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 374 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-09-01 06:37:05,823 INFO L119 LiptonReduction]: Number of co-enabled transitions 3608 [2023-09-01 06:37:08,426 INFO L134 LiptonReduction]: Checked pairs total: 6183 [2023-09-01 06:37:08,427 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-09-01 06:37:08,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:37:08,440 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;@74e0585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:37:08,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:37:08,445 INFO L130 PetriNetUnfolder]: 2/24 cut-off events. [2023-09-01 06:37:08,445 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:37:08,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:37:08,446 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:37:08,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:37:08,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:37:08,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1641993492, now seen corresponding path program 1 times [2023-09-01 06:37:08,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:37:08,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324301528] [2023-09-01 06:37:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:37:08,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:37:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:08,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:37:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:08,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:37:08,560 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:37:08,560 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:37:08,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:37:08,562 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:37:08,563 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:37:08,564 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:37:08,564 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:37:08,588 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:37:08,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 173 transitions, 364 flow [2023-09-01 06:37:08,640 INFO L130 PetriNetUnfolder]: 31/277 cut-off events. [2023-09-01 06:37:08,642 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:37:08,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 277 events. 31/277 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 860 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2023-09-01 06:37:08,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 173 transitions, 364 flow [2023-09-01 06:37:08,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 173 transitions, 364 flow [2023-09-01 06:37:08,648 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:37:08,648 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 173 transitions, 364 flow [2023-09-01 06:37:08,649 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 173 transitions, 364 flow [2023-09-01 06:37:08,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 173 transitions, 364 flow [2023-09-01 06:37:08,692 INFO L130 PetriNetUnfolder]: 31/277 cut-off events. [2023-09-01 06:37:08,692 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:37:08,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 277 events. 31/277 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 860 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2023-09-01 06:37:08,700 INFO L119 LiptonReduction]: Number of co-enabled transitions 12136 [2023-09-01 06:37:11,739 INFO L134 LiptonReduction]: Checked pairs total: 24997 [2023-09-01 06:37:11,740 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-09-01 06:37:11,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:37:11,742 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;@74e0585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:37:11,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:37:11,747 INFO L130 PetriNetUnfolder]: 10/62 cut-off events. [2023-09-01 06:37:11,747 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:37:11,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:37:11,747 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:37:11,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:37:11,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:37:11,748 INFO L85 PathProgramCache]: Analyzing trace with hash -189343711, now seen corresponding path program 1 times [2023-09-01 06:37:11,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:37:11,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183430141] [2023-09-01 06:37:11,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:37:11,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:37:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:11,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:37:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:11,826 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:37:11,829 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:37:11,829 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:37:11,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:37:11,831 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:37:11,831 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:37:11,832 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:37:11,832 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:37:11,865 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:37:11,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 216 transitions, 462 flow [2023-09-01 06:37:11,898 INFO L130 PetriNetUnfolder]: 50/429 cut-off events. [2023-09-01 06:37:11,898 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:37:11,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 429 events. 50/429 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1500 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 285. Up to 16 conditions per place. [2023-09-01 06:37:11,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 216 transitions, 462 flow [2023-09-01 06:37:11,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 216 transitions, 462 flow [2023-09-01 06:37:11,903 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:37:11,903 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 216 transitions, 462 flow [2023-09-01 06:37:11,904 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 216 transitions, 462 flow [2023-09-01 06:37:11,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 216 transitions, 462 flow [2023-09-01 06:37:11,933 INFO L130 PetriNetUnfolder]: 50/429 cut-off events. [2023-09-01 06:37:11,934 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:37:11,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 429 events. 50/429 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1500 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 285. Up to 16 conditions per place. [2023-09-01 06:37:11,948 INFO L119 LiptonReduction]: Number of co-enabled transitions 23616 [2023-09-01 06:37:15,172 INFO L134 LiptonReduction]: Checked pairs total: 53035 [2023-09-01 06:37:15,172 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-09-01 06:37:15,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:37:15,174 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;@74e0585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:37:15,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:37:15,180 INFO L130 PetriNetUnfolder]: 19/104 cut-off events. [2023-09-01 06:37:15,181 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:37:15,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:37:15,181 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:37:15,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:37:15,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:37:15,182 INFO L85 PathProgramCache]: Analyzing trace with hash 758736901, now seen corresponding path program 1 times [2023-09-01 06:37:15,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:37:15,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379482697] [2023-09-01 06:37:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:37:15,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:37:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:15,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:37:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:15,268 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:37:15,268 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:37:15,269 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:37:15,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:37:15,269 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:37:15,269 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:37:15,270 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:37:15,270 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:37:15,288 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:37:15,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 259 transitions, 562 flow [2023-09-01 06:37:15,364 INFO L130 PetriNetUnfolder]: 81/661 cut-off events. [2023-09-01 06:37:15,365 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:37:15,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 661 events. 81/661 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2640 event pairs, 6 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 449. Up to 32 conditions per place. [2023-09-01 06:37:15,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 259 transitions, 562 flow [2023-09-01 06:37:15,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 259 transitions, 562 flow [2023-09-01 06:37:15,374 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:37:15,374 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 259 transitions, 562 flow [2023-09-01 06:37:15,375 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 259 transitions, 562 flow [2023-09-01 06:37:15,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 259 transitions, 562 flow [2023-09-01 06:37:15,429 INFO L130 PetriNetUnfolder]: 81/661 cut-off events. [2023-09-01 06:37:15,429 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:37:15,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 661 events. 81/661 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2640 event pairs, 6 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 449. Up to 32 conditions per place. [2023-09-01 06:37:15,461 INFO L119 LiptonReduction]: Number of co-enabled transitions 38704 [2023-09-01 06:37:18,785 INFO L134 LiptonReduction]: Checked pairs total: 102377 [2023-09-01 06:37:18,786 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-09-01 06:37:18,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:37:18,788 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;@74e0585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:37:18,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:37:18,801 INFO L130 PetriNetUnfolder]: 29/152 cut-off events. [2023-09-01 06:37:18,801 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:37:18,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:37:18,802 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:37:18,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:37:18,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:37:18,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2056028202, now seen corresponding path program 1 times [2023-09-01 06:37:18,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:37:18,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431054871] [2023-09-01 06:37:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:37:18,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:37:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:18,838 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:37:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:18,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:37:18,853 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:37:18,853 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:37:18,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:37:18,853 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:37:18,854 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:37:18,854 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:37:18,854 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:37:18,871 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:37:18,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 302 transitions, 664 flow [2023-09-01 06:37:18,992 INFO L130 PetriNetUnfolder]: 140/1057 cut-off events. [2023-09-01 06:37:18,992 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:37:19,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 1057 events. 140/1057 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4966 event pairs, 23 based on Foata normal form. 0/841 useless extension candidates. Maximal degree in co-relation 706. Up to 80 conditions per place. [2023-09-01 06:37:19,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 302 transitions, 664 flow [2023-09-01 06:37:19,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 302 transitions, 664 flow [2023-09-01 06:37:19,010 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:37:19,010 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 302 transitions, 664 flow [2023-09-01 06:37:19,011 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 302 transitions, 664 flow [2023-09-01 06:37:19,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 302 transitions, 664 flow [2023-09-01 06:37:19,142 INFO L130 PetriNetUnfolder]: 140/1057 cut-off events. [2023-09-01 06:37:19,142 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:37:19,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 1057 events. 140/1057 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4966 event pairs, 23 based on Foata normal form. 0/841 useless extension candidates. Maximal degree in co-relation 706. Up to 80 conditions per place. [2023-09-01 06:37:19,178 INFO L119 LiptonReduction]: Number of co-enabled transitions 57400 [2023-09-01 06:37:22,856 INFO L134 LiptonReduction]: Checked pairs total: 141932 [2023-09-01 06:37:22,856 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-09-01 06:37:22,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:37:22,859 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;@74e0585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:37:22,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:37:22,872 INFO L130 PetriNetUnfolder]: 41/213 cut-off events. [2023-09-01 06:37:22,872 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:37:22,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:37:22,872 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:37:22,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:37:22,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:37:22,873 INFO L85 PathProgramCache]: Analyzing trace with hash -991824947, now seen corresponding path program 1 times [2023-09-01 06:37:22,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:37:22,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210289754] [2023-09-01 06:37:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:37:22,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:37:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:22,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:37:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:22,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:37:22,935 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:37:22,935 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:37:22,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:37:22,936 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:37:22,938 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:37:22,938 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:37:22,938 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:37:22,960 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:37:22,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 345 transitions, 768 flow [2023-09-01 06:37:23,200 INFO L130 PetriNetUnfolder]: 263/1789 cut-off events. [2023-09-01 06:37:23,201 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:37:23,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2021 conditions, 1789 events. 263/1789 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10244 event pairs, 72 based on Foata normal form. 0/1428 useless extension candidates. Maximal degree in co-relation 1156. Up to 192 conditions per place. [2023-09-01 06:37:23,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 345 transitions, 768 flow [2023-09-01 06:37:23,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 345 transitions, 768 flow [2023-09-01 06:37:23,250 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:37:23,250 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 311 places, 345 transitions, 768 flow [2023-09-01 06:37:23,251 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 311 places, 345 transitions, 768 flow [2023-09-01 06:37:23,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 345 transitions, 768 flow [2023-09-01 06:37:23,494 INFO L130 PetriNetUnfolder]: 263/1789 cut-off events. [2023-09-01 06:37:23,494 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:37:23,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2021 conditions, 1789 events. 263/1789 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10244 event pairs, 72 based on Foata normal form. 0/1428 useless extension candidates. Maximal degree in co-relation 1156. Up to 192 conditions per place. [2023-09-01 06:37:23,566 INFO L119 LiptonReduction]: Number of co-enabled transitions 79704 [2023-09-01 06:37:27,535 INFO L134 LiptonReduction]: Checked pairs total: 200186 [2023-09-01 06:37:27,536 INFO L136 LiptonReduction]: Total number of compositions: 272 [2023-09-01 06:37:27,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:37:27,543 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;@74e0585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:37:27,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:37:27,566 INFO L130 PetriNetUnfolder]: 56/285 cut-off events. [2023-09-01 06:37:27,566 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:37:27,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:37:27,567 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:37:27,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:37:27,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:37:27,567 INFO L85 PathProgramCache]: Analyzing trace with hash -437435013, now seen corresponding path program 1 times [2023-09-01 06:37:27,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:37:27,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078278409] [2023-09-01 06:37:27,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:37:27,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:37:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:27,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:37:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:27,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:37:27,629 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:37:27,629 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:37:27,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:37:27,630 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:37:27,630 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:37:27,630 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:37:27,630 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:37:27,669 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:37:27,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 388 transitions, 874 flow [2023-09-01 06:37:28,235 INFO L130 PetriNetUnfolder]: 530/3209 cut-off events. [2023-09-01 06:37:28,235 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:37:28,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3707 conditions, 3209 events. 530/3209 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22340 event pairs, 201 based on Foata normal form. 0/2575 useless extension candidates. Maximal degree in co-relation 2007. Up to 448 conditions per place. [2023-09-01 06:37:28,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 388 transitions, 874 flow [2023-09-01 06:37:28,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 388 transitions, 874 flow [2023-09-01 06:37:28,302 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:37:28,302 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 388 transitions, 874 flow [2023-09-01 06:37:28,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 388 transitions, 874 flow [2023-09-01 06:37:28,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 388 transitions, 874 flow [2023-09-01 06:37:28,904 INFO L130 PetriNetUnfolder]: 530/3209 cut-off events. [2023-09-01 06:37:28,905 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:37:28,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3707 conditions, 3209 events. 530/3209 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22340 event pairs, 201 based on Foata normal form. 0/2575 useless extension candidates. Maximal degree in co-relation 2007. Up to 448 conditions per place. [2023-09-01 06:37:29,060 INFO L119 LiptonReduction]: Number of co-enabled transitions 105616 [2023-09-01 06:37:33,584 INFO L134 LiptonReduction]: Checked pairs total: 300510 [2023-09-01 06:37:33,585 INFO L136 LiptonReduction]: Total number of compositions: 306 [2023-09-01 06:37:33,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:37:33,586 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;@74e0585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:37:33,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:37:33,614 INFO L130 PetriNetUnfolder]: 76/383 cut-off events. [2023-09-01 06:37:33,615 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:37:33,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:37:33,615 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:37:33,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:37:33,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:37:33,616 INFO L85 PathProgramCache]: Analyzing trace with hash -784950188, now seen corresponding path program 1 times [2023-09-01 06:37:33,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:37:33,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485136905] [2023-09-01 06:37:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:37:33,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:37:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:33,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:37:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:33,676 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:37:33,676 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:37:33,677 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:37:33,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:37:33,677 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:37:33,677 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:37:33,677 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:37:33,677 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:37:33,699 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:37:33,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 431 transitions, 982 flow [2023-09-01 06:37:34,944 INFO L130 PetriNetUnfolder]: 1117/6037 cut-off events. [2023-09-01 06:37:34,945 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:37:35,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7122 conditions, 6037 events. 1117/6037 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 49933 event pairs, 522 based on Foata normal form. 0/4874 useless extension candidates. Maximal degree in co-relation 3691. Up to 1024 conditions per place. [2023-09-01 06:37:35,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 387 places, 431 transitions, 982 flow [2023-09-01 06:37:35,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 387 places, 431 transitions, 982 flow [2023-09-01 06:37:35,085 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:37:35,085 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 387 places, 431 transitions, 982 flow [2023-09-01 06:37:35,085 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 387 places, 431 transitions, 982 flow [2023-09-01 06:37:35,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 431 transitions, 982 flow [2023-09-01 06:37:36,249 INFO L130 PetriNetUnfolder]: 1117/6037 cut-off events. [2023-09-01 06:37:36,249 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:37:36,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7122 conditions, 6037 events. 1117/6037 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 49933 event pairs, 522 based on Foata normal form. 0/4874 useless extension candidates. Maximal degree in co-relation 3691. Up to 1024 conditions per place. [2023-09-01 06:37:36,615 INFO L119 LiptonReduction]: Number of co-enabled transitions 135136 [2023-09-01 06:37:41,261 INFO L134 LiptonReduction]: Checked pairs total: 392128 [2023-09-01 06:37:41,261 INFO L136 LiptonReduction]: Total number of compositions: 339 [2023-09-01 06:37:41,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:37:41,269 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;@74e0585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:37:41,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:37:41,306 INFO L130 PetriNetUnfolder]: 105/517 cut-off events. [2023-09-01 06:37:41,306 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:37:41,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:37:41,306 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:37:41,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:37:41,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:37:41,307 INFO L85 PathProgramCache]: Analyzing trace with hash -377975902, now seen corresponding path program 1 times [2023-09-01 06:37:41,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:37:41,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862591379] [2023-09-01 06:37:41,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:37:41,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:37:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:41,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:37:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:41,342 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:37:41,343 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:37:41,343 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:37:41,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:37:41,343 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:37:41,343 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:37:41,344 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:37:41,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:37:41,367 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:37:41,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 474 transitions, 1092 flow [2023-09-01 06:37:44,058 INFO L130 PetriNetUnfolder]: 2408/11745 cut-off events. [2023-09-01 06:37:44,059 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:37:44,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14122 conditions, 11745 events. 2408/11745 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 112649 event pairs, 1291 based on Foata normal form. 0/9541 useless extension candidates. Maximal degree in co-relation 7104. Up to 2304 conditions per place. [2023-09-01 06:37:44,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 474 transitions, 1092 flow [2023-09-01 06:37:44,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 425 places, 474 transitions, 1092 flow [2023-09-01 06:37:44,374 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:37:44,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 425 places, 474 transitions, 1092 flow [2023-09-01 06:37:44,375 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 425 places, 474 transitions, 1092 flow [2023-09-01 06:37:44,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 474 transitions, 1092 flow [2023-09-01 06:37:46,978 INFO L130 PetriNetUnfolder]: 2408/11745 cut-off events. [2023-09-01 06:37:46,986 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:37:47,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14122 conditions, 11745 events. 2408/11745 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 112649 event pairs, 1291 based on Foata normal form. 0/9541 useless extension candidates. Maximal degree in co-relation 7104. Up to 2304 conditions per place. [2023-09-01 06:37:47,728 INFO L119 LiptonReduction]: Number of co-enabled transitions 168264 [2023-09-01 06:37:52,948 INFO L134 LiptonReduction]: Checked pairs total: 436109 [2023-09-01 06:37:52,948 INFO L136 LiptonReduction]: Total number of compositions: 365 [2023-09-01 06:37:52,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:37:52,950 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;@74e0585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:37:52,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:37:53,015 INFO L130 PetriNetUnfolder]: 150/711 cut-off events. [2023-09-01 06:37:53,016 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 06:37:53,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:37:53,016 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:37:53,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:37:53,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:37:53,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1926674323, now seen corresponding path program 1 times [2023-09-01 06:37:53,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:37:53,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691449055] [2023-09-01 06:37:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:37:53,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:37:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:53,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:37:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:37:53,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:37:53,067 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:37:53,067 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:37:53,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:37:53,068 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:37:53,070 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:37:53,070 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:37:53,070 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:37:53,101 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:37:53,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 517 transitions, 1204 flow [2023-09-01 06:37:58,852 INFO L130 PetriNetUnfolder]: 5235/23341 cut-off events. [2023-09-01 06:37:58,852 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:37:59,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28547 conditions, 23341 events. 5235/23341 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 255167 event pairs, 3084 based on Foata normal form. 0/19072 useless extension candidates. Maximal degree in co-relation 14102. Up to 5120 conditions per place. [2023-09-01 06:37:59,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 463 places, 517 transitions, 1204 flow [2023-09-01 06:37:59,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 463 places, 517 transitions, 1204 flow [2023-09-01 06:37:59,649 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:37:59,649 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 463 places, 517 transitions, 1204 flow [2023-09-01 06:37:59,649 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 463 places, 517 transitions, 1204 flow [2023-09-01 06:37:59,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 517 transitions, 1204 flow [2023-09-01 06:38:05,347 INFO L130 PetriNetUnfolder]: 5235/23341 cut-off events. [2023-09-01 06:38:05,347 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:38:05,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28547 conditions, 23341 events. 5235/23341 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 255167 event pairs, 3084 based on Foata normal form. 0/19072 useless extension candidates. Maximal degree in co-relation 14102. Up to 5120 conditions per place. [2023-09-01 06:38:07,292 INFO L119 LiptonReduction]: Number of co-enabled transitions 205000 [2023-09-01 06:38:12,353 INFO L134 LiptonReduction]: Checked pairs total: 535405 [2023-09-01 06:38:12,353 INFO L136 LiptonReduction]: Total number of compositions: 403 [2023-09-01 06:38:12,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:38:12,355 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;@74e0585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:38:12,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:38:12,442 INFO L130 PetriNetUnfolder]: 224/994 cut-off events. [2023-09-01 06:38:12,442 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 06:38:12,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:38:12,443 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:38:12,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:38:12,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:38:12,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1711534994, now seen corresponding path program 1 times [2023-09-01 06:38:12,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:38:12,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013379826] [2023-09-01 06:38:12,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:38:12,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:38:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:12,462 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:38:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:12,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:38:12,488 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:38:12,489 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:38:12,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:38:12,489 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:38:12,489 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:38:12,489 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:38:12,489 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:38:12,517 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:38:12,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 501 places, 560 transitions, 1318 flow [2023-09-01 06:38:25,105 INFO L130 PetriNetUnfolder]: 11390/46969 cut-off events. [2023-09-01 06:38:25,105 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:38:26,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58333 conditions, 46969 events. 11390/46969 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 575420 event pairs, 7181 based on Foata normal form. 0/38587 useless extension candidates. Maximal degree in co-relation 28525. Up to 11264 conditions per place. [2023-09-01 06:38:26,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 501 places, 560 transitions, 1318 flow [2023-09-01 06:38:27,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 501 places, 560 transitions, 1318 flow [2023-09-01 06:38:27,192 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:38:27,192 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 501 places, 560 transitions, 1318 flow [2023-09-01 06:38:27,192 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 501 places, 560 transitions, 1318 flow [2023-09-01 06:38:27,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 501 places, 560 transitions, 1318 flow [2023-09-01 06:38:39,700 INFO L130 PetriNetUnfolder]: 11390/46969 cut-off events. [2023-09-01 06:38:39,700 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:38:41,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58333 conditions, 46969 events. 11390/46969 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 575420 event pairs, 7181 based on Foata normal form. 0/38587 useless extension candidates. Maximal degree in co-relation 28525. Up to 11264 conditions per place. [2023-09-01 06:38:44,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 245344 [2023-09-01 06:38:49,855 INFO L134 LiptonReduction]: Checked pairs total: 640870 [2023-09-01 06:38:49,855 INFO L136 LiptonReduction]: Total number of compositions: 443 [2023-09-01 06:38:49,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:38:49,856 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;@74e0585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:38:49,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:38:50,043 INFO L130 PetriNetUnfolder]: 349/1428 cut-off events. [2023-09-01 06:38:50,043 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 06:38:50,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:38:50,043 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:38:50,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:38:50,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:38:50,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1450845001, now seen corresponding path program 1 times [2023-09-01 06:38:50,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:38:50,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212528181] [2023-09-01 06:38:50,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:38:50,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:38:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:50,062 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:38:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:50,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:38:50,105 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:38:50,105 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:38:50,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:38:50,105 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:38:50,106 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:38:50,106 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:38:50,106 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:38:50,138 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:38:50,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 539 places, 603 transitions, 1434 flow [2023-09-01 06:39:19,176 INFO L130 PetriNetUnfolder]: 24713/95173 cut-off events. [2023-09-01 06:39:19,176 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:39:25,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119864 conditions, 95173 events. 24713/95173 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1453. Compared 1277412 event pairs, 16398 based on Foata normal form. 0/78582 useless extension candidates. Maximal degree in co-relation 58309. Up to 24576 conditions per place. [2023-09-01 06:39:25,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 539 places, 603 transitions, 1434 flow [2023-09-01 06:39:26,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 539 places, 603 transitions, 1434 flow [2023-09-01 06:39:26,993 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:39:26,993 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 539 places, 603 transitions, 1434 flow [2023-09-01 06:39:26,993 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 539 places, 603 transitions, 1434 flow [2023-09-01 06:39:26,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 539 places, 603 transitions, 1434 flow [2023-09-01 06:39:54,785 INFO L130 PetriNetUnfolder]: 24713/95173 cut-off events. [2023-09-01 06:39:54,785 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:40:02,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119864 conditions, 95173 events. 24713/95173 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1453. Compared 1277412 event pairs, 16398 based on Foata normal form. 0/78582 useless extension candidates. Maximal degree in co-relation 58309. Up to 24576 conditions per place. [2023-09-01 06:40:10,821 INFO L119 LiptonReduction]: Number of co-enabled transitions 289296 [2023-09-01 06:40:16,750 INFO L134 LiptonReduction]: Checked pairs total: 755233 [2023-09-01 06:40:16,750 INFO L136 LiptonReduction]: Total number of compositions: 458 [2023-09-01 06:40:16,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:16,752 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;@74e0585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:16,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:16,974 INFO L130 PetriNetUnfolder]: 560/2099 cut-off events. [2023-09-01 06:40:16,974 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 06:40:16,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:16,974 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 06:40:16,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:16,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:16,974 INFO L85 PathProgramCache]: Analyzing trace with hash -309751504, now seen corresponding path program 1 times [2023-09-01 06:40:16,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:16,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906765946] [2023-09-01 06:40:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:16,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:17,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:17,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:17,028 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:17,028 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:17,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:40:17,029 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:17,029 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:17,029 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:17,029 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:40:17,065 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:40:17,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 577 places, 646 transitions, 1552 flow [2023-09-01 06:41:20,972 INFO L130 PetriNetUnfolder]: 53396/193553 cut-off events. [2023-09-01 06:41:20,972 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:41:37,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246932 conditions, 193553 events. 53396/193553 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2870. Compared 2823736 event pairs, 36879 based on Foata normal form. 0/160561 useless extension candidates. Maximal degree in co-relation 119838. Up to 53248 conditions per place. [2023-09-01 06:41:37,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 577 places, 646 transitions, 1552 flow [2023-09-01 06:41:43,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 577 places, 646 transitions, 1552 flow [2023-09-01 06:41:43,387 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:43,387 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 577 places, 646 transitions, 1552 flow [2023-09-01 06:41:43,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 577 places, 646 transitions, 1552 flow [2023-09-01 06:41:43,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 577 places, 646 transitions, 1552 flow