./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.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_79-equ_racefree.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 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc --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 06:59:39,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:59:39,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:59:39,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:59:39,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:59:39,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:59:39,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:59:39,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:59:39,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:59:39,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:59:39,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:59:39,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:59:39,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:59:39,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:59:39,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:59:39,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:59:39,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:59:39,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:59:39,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:59:39,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:59:39,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:59:39,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:59:39,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:59:39,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:59:39,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:59:39,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:59:39,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:59:39,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:59:39,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:59:39,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:59:39,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:59:39,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:59:39,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:59:39,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:59:39,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:59:39,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:59:39,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:59:39,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:59:39,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:59:39,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:59:39,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:59:39,963 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:59:39,979 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:59:39,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:59:39,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:59:39,980 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:59:39,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:59:39,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:59:39,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:59:39,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:59:39,983 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:59:39,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:59:39,984 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:59:39,984 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:59:39,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:59:39,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:59:39,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:59:39,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:59:39,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:59:39,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:59:39,985 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:59:39,985 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:59:39,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:59:39,986 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:59:39,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:59:39,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:59:39,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:59:39,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:59:39,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:59:39,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:59:39,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:59:39,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:59:39,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:59:39,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:59:39,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:59:39,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:59:39,988 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:59:39,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:59:39,988 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:59:39,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:59:40,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:59:40,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:59:40,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:59:40,290 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:59:40,290 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:59:40,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-09-01 06:59:41,324 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:59:41,588 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:59:41,589 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-09-01 06:59:41,603 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb7a0aa15/3e05497e42474634b26a52471e7f3e62/FLAG2c180e8dc [2023-09-01 06:59:41,897 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb7a0aa15/3e05497e42474634b26a52471e7f3e62 [2023-09-01 06:59:41,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:59:41,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:59:41,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:59:41,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:59:41,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:59:41,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:59:41" (1/1) ... [2023-09-01 06:59:41,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161d0abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:41, skipping insertion in model container [2023-09-01 06:59:41,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:59:41" (1/1) ... [2023-09-01 06:59:41,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:59:41,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:59:42,285 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_79-equ_racefree.i[47038,47051] [2023-09-01 06:59:42,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:59:42,327 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:59:42,359 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_79-equ_racefree.i[47038,47051] [2023-09-01 06:59:42,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:59:42,448 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:59:42,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42 WrapperNode [2023-09-01 06:59:42,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:59:42,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:59:42,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:59:42,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:59:42,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42" (1/1) ... [2023-09-01 06:59:42,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42" (1/1) ... [2023-09-01 06:59:42,510 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 220 [2023-09-01 06:59:42,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:59:42,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:59:42,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:59:42,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:59:42,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42" (1/1) ... [2023-09-01 06:59:42,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42" (1/1) ... [2023-09-01 06:59:42,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42" (1/1) ... [2023-09-01 06:59:42,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42" (1/1) ... [2023-09-01 06:59:42,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42" (1/1) ... [2023-09-01 06:59:42,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42" (1/1) ... [2023-09-01 06:59:42,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42" (1/1) ... [2023-09-01 06:59:42,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42" (1/1) ... [2023-09-01 06:59:42,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:59:42,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:59:42,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:59:42,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:59:42,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42" (1/1) ... [2023-09-01 06:59:42,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:59:42,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:59:42,594 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 06:59:42,613 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 06:59:42,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:59:42,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:59:42,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:59:42,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:59:42,632 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:59:42,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:59:42,632 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:59:42,635 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:59:42,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:59:42,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:59:42,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:59:42,637 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 06:59:42,826 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:59:42,828 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:59:43,143 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:59:43,154 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:59:43,155 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-09-01 06:59:43,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:59:43 BoogieIcfgContainer [2023-09-01 06:59:43,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:59:43,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:59:43,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:59:43,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:59:43,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:59:41" (1/3) ... [2023-09-01 06:59:43,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4286c96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:59:43, skipping insertion in model container [2023-09-01 06:59:43,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:59:42" (2/3) ... [2023-09-01 06:59:43,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4286c96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:59:43, skipping insertion in model container [2023-09-01 06:59:43,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:59:43" (3/3) ... [2023-09-01 06:59:43,161 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2023-09-01 06:59:43,166 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:59:43,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:59:43,184 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-09-01 06:59:43,184 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:59:43,226 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:59:43,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 231 transitions, 470 flow [2023-09-01 06:59:43,313 INFO L130 PetriNetUnfolder]: 43/308 cut-off events. [2023-09-01 06:59:43,314 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:59:43,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 308 events. 43/308 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 985 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-09-01 06:59:43,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 231 transitions, 470 flow [2023-09-01 06:59:43,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 216 transitions, 437 flow [2023-09-01 06:59:43,329 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:59:43,335 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 216 transitions, 437 flow [2023-09-01 06:59:43,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 216 transitions, 437 flow [2023-09-01 06:59:43,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 216 transitions, 437 flow [2023-09-01 06:59:43,391 INFO L130 PetriNetUnfolder]: 41/293 cut-off events. [2023-09-01 06:59:43,391 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:59:43,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 293 events. 41/293 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 945 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-09-01 06:59:43,396 INFO L119 LiptonReduction]: Number of co-enabled transitions 11136 [2023-09-01 06:59:48,707 INFO L134 LiptonReduction]: Checked pairs total: 22894 [2023-09-01 06:59:48,708 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-09-01 06:59:48,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:59:48,725 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;@5b991de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:59:48,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:59:48,733 INFO L130 PetriNetUnfolder]: 11/46 cut-off events. [2023-09-01 06:59:48,733 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:59:48,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:59:48,734 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:59:48,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:59:48,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:59:48,738 INFO L85 PathProgramCache]: Analyzing trace with hash -374337994, now seen corresponding path program 1 times [2023-09-01 06:59:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:59:48,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136202029] [2023-09-01 06:59:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:59:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:59:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:48,841 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:59:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:48,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:59:48,905 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:59:48,906 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:59:48,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:59:48,909 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:59:48,914 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:59:48,915 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:59:48,915 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:59:48,973 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:59:48,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 297 transitions, 612 flow [2023-09-01 06:59:49,049 INFO L130 PetriNetUnfolder]: 72/487 cut-off events. [2023-09-01 06:59:49,050 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:59:49,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 487 events. 72/487 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1896 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 310. Up to 12 conditions per place. [2023-09-01 06:59:49,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 297 transitions, 612 flow [2023-09-01 06:59:49,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 291 transitions, 600 flow [2023-09-01 06:59:49,062 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:59:49,062 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 291 transitions, 600 flow [2023-09-01 06:59:49,062 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 291 transitions, 600 flow [2023-09-01 06:59:49,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 291 transitions, 600 flow [2023-09-01 06:59:49,104 INFO L130 PetriNetUnfolder]: 71/481 cut-off events. [2023-09-01 06:59:49,104 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:59:49,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 481 events. 71/481 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1893 event pairs, 0 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2023-09-01 06:59:49,123 INFO L119 LiptonReduction]: Number of co-enabled transitions 32896 [2023-09-01 06:59:54,489 INFO L134 LiptonReduction]: Checked pairs total: 72549 [2023-09-01 06:59:54,501 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-09-01 06:59:54,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:59:54,503 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;@5b991de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:59:54,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:59:54,510 INFO L130 PetriNetUnfolder]: 33/115 cut-off events. [2023-09-01 06:59:54,510 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:59:54,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:59:54,510 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:59:54,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:59:54,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:59:54,511 INFO L85 PathProgramCache]: Analyzing trace with hash 33393051, now seen corresponding path program 1 times [2023-09-01 06:59:54,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:59:54,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061434649] [2023-09-01 06:59:54,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:59:54,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:59:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:54,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:59:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:54,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:59:54,588 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:59:54,589 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:59:54,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:59:54,590 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:59:54,591 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:59:54,591 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:59:54,591 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:59:54,616 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:59:54,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 363 transitions, 756 flow [2023-09-01 06:59:54,713 INFO L130 PetriNetUnfolder]: 106/705 cut-off events. [2023-09-01 06:59:54,714 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:59:54,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 705 events. 106/705 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3070 event pairs, 1 based on Foata normal form. 0/543 useless extension candidates. Maximal degree in co-relation 495. Up to 16 conditions per place. [2023-09-01 06:59:54,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 363 transitions, 756 flow [2023-09-01 06:59:54,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 357 transitions, 744 flow [2023-09-01 06:59:54,732 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:59:54,732 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 357 transitions, 744 flow [2023-09-01 06:59:54,732 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 357 transitions, 744 flow [2023-09-01 06:59:54,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 357 transitions, 744 flow [2023-09-01 06:59:54,800 INFO L130 PetriNetUnfolder]: 105/699 cut-off events. [2023-09-01 06:59:54,801 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:59:54,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 699 events. 105/699 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3079 event pairs, 1 based on Foata normal form. 0/542 useless extension candidates. Maximal degree in co-relation 489. Up to 16 conditions per place. [2023-09-01 06:59:54,830 INFO L119 LiptonReduction]: Number of co-enabled transitions 62208 [2023-09-01 07:00:00,873 INFO L134 LiptonReduction]: Checked pairs total: 139453 [2023-09-01 07:00:00,874 INFO L136 LiptonReduction]: Total number of compositions: 296 [2023-09-01 07:00:00,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:00:00,876 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;@5b991de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:00:00,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:00:00,894 INFO L130 PetriNetUnfolder]: 59/195 cut-off events. [2023-09-01 07:00:00,895 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 07:00:00,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:00:00,895 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 07:00:00,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:00:00,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:00:00,896 INFO L85 PathProgramCache]: Analyzing trace with hash -427288935, now seen corresponding path program 1 times [2023-09-01 07:00:00,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:00:00,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281869348] [2023-09-01 07:00:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:00:00,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:00:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:00,948 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:00:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:00,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:00:00,997 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:00:00,998 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:00:00,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:00:00,998 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:00:00,998 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:00:00,999 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:00:00,999 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 07:00:01,020 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 07:00:01,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 429 transitions, 902 flow [2023-09-01 07:00:01,154 INFO L130 PetriNetUnfolder]: 152/1003 cut-off events. [2023-09-01 07:00:01,155 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 07:00:01,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 1003 events. 152/1003 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4658 event pairs, 6 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 725. Up to 32 conditions per place. [2023-09-01 07:00:01,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 429 transitions, 902 flow [2023-09-01 07:00:01,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 423 transitions, 890 flow [2023-09-01 07:00:01,187 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:00:01,188 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 365 places, 423 transitions, 890 flow [2023-09-01 07:00:01,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 365 places, 423 transitions, 890 flow [2023-09-01 07:00:01,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 423 transitions, 890 flow [2023-09-01 07:00:01,323 INFO L130 PetriNetUnfolder]: 151/997 cut-off events. [2023-09-01 07:00:01,323 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 07:00:01,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 997 events. 151/997 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4668 event pairs, 6 based on Foata normal form. 0/772 useless extension candidates. Maximal degree in co-relation 719. Up to 32 conditions per place. [2023-09-01 07:00:01,383 INFO L119 LiptonReduction]: Number of co-enabled transitions 100096 [2023-09-01 07:00:08,129 INFO L134 LiptonReduction]: Checked pairs total: 254531 [2023-09-01 07:00:08,129 INFO L136 LiptonReduction]: Total number of compositions: 350 [2023-09-01 07:00:08,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:00:08,131 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;@5b991de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:00:08,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:00:08,158 INFO L130 PetriNetUnfolder]: 84/286 cut-off events. [2023-09-01 07:00:08,158 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 07:00:08,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:00:08,158 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 07:00:08,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:00:08,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:00:08,159 INFO L85 PathProgramCache]: Analyzing trace with hash -144827711, now seen corresponding path program 1 times [2023-09-01 07:00:08,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:00:08,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038835199] [2023-09-01 07:00:08,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:00:08,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:00:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:08,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:00:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:08,247 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:00:08,250 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:00:08,251 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:00:08,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:00:08,255 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:00:08,255 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:00:08,256 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:00:08,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 07:00:08,287 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 07:00:08,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 495 transitions, 1050 flow [2023-09-01 07:00:08,527 INFO L130 PetriNetUnfolder]: 226/1465 cut-off events. [2023-09-01 07:00:08,527 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 07:00:08,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1576 conditions, 1465 events. 226/1465 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7585 event pairs, 23 based on Foata normal form. 0/1135 useless extension candidates. Maximal degree in co-relation 1048. Up to 80 conditions per place. [2023-09-01 07:00:08,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 495 transitions, 1050 flow [2023-09-01 07:00:08,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 420 places, 489 transitions, 1038 flow [2023-09-01 07:00:08,556 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:00:08,556 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 420 places, 489 transitions, 1038 flow [2023-09-01 07:00:08,557 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 420 places, 489 transitions, 1038 flow [2023-09-01 07:00:08,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 420 places, 489 transitions, 1038 flow [2023-09-01 07:00:08,803 INFO L130 PetriNetUnfolder]: 225/1459 cut-off events. [2023-09-01 07:00:08,803 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 07:00:08,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 1459 events. 225/1459 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7609 event pairs, 23 based on Foata normal form. 0/1134 useless extension candidates. Maximal degree in co-relation 1042. Up to 80 conditions per place. [2023-09-01 07:00:08,869 INFO L119 LiptonReduction]: Number of co-enabled transitions 146560 [2023-09-01 07:00:13,912 INFO L134 LiptonReduction]: Checked pairs total: 374393 [2023-09-01 07:00:13,913 INFO L136 LiptonReduction]: Total number of compositions: 390 [2023-09-01 07:00:13,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:00:13,918 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;@5b991de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:00:13,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:00:13,943 INFO L130 PetriNetUnfolder]: 118/388 cut-off events. [2023-09-01 07:00:13,943 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 07:00:13,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:00:13,943 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:00:13,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:00:13,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:00:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash 590431495, now seen corresponding path program 1 times [2023-09-01 07:00:13,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:00:13,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454354764] [2023-09-01 07:00:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:00:13,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:00:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:13,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:00:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:13,993 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:00:13,993 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:00:13,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:00:13,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:00:13,993 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:00:13,994 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:00:13,994 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:00:13,994 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 07:00:14,032 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 07:00:14,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 480 places, 561 transitions, 1200 flow [2023-09-01 07:00:14,450 INFO L130 PetriNetUnfolder]: 364/2263 cut-off events. [2023-09-01 07:00:14,450 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 07:00:14,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2495 conditions, 2263 events. 364/2263 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 13539 event pairs, 72 based on Foata normal form. 0/1769 useless extension candidates. Maximal degree in co-relation 1564. Up to 192 conditions per place. [2023-09-01 07:00:14,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 480 places, 561 transitions, 1200 flow [2023-09-01 07:00:14,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 475 places, 555 transitions, 1188 flow [2023-09-01 07:00:14,528 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:00:14,529 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 475 places, 555 transitions, 1188 flow [2023-09-01 07:00:14,529 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 475 places, 555 transitions, 1188 flow [2023-09-01 07:00:14,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 475 places, 555 transitions, 1188 flow [2023-09-01 07:00:15,027 INFO L130 PetriNetUnfolder]: 363/2257 cut-off events. [2023-09-01 07:00:15,027 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 07:00:15,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2489 conditions, 2257 events. 363/2257 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 13521 event pairs, 72 based on Foata normal form. 0/1768 useless extension candidates. Maximal degree in co-relation 1558. Up to 192 conditions per place. [2023-09-01 07:00:15,197 INFO L119 LiptonReduction]: Number of co-enabled transitions 201600 [2023-09-01 07:00:22,099 INFO L134 LiptonReduction]: Checked pairs total: 571173 [2023-09-01 07:00:22,099 INFO L136 LiptonReduction]: Total number of compositions: 457 [2023-09-01 07:00:22,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:00:22,106 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;@5b991de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:00:22,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:00:22,141 INFO L130 PetriNetUnfolder]: 138/486 cut-off events. [2023-09-01 07:00:22,141 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 07:00:22,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:00:22,142 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:00:22,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:00:22,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:00:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash -227766730, now seen corresponding path program 1 times [2023-09-01 07:00:22,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:00:22,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378820851] [2023-09-01 07:00:22,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:00:22,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:00:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:22,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:00:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:22,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:00:22,207 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:00:22,207 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:00:22,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:00:22,208 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:00:22,211 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:00:22,211 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:00:22,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 07:00:22,240 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 07:00:22,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 627 transitions, 1352 flow [2023-09-01 07:00:23,245 INFO L130 PetriNetUnfolder]: 646/3749 cut-off events. [2023-09-01 07:00:23,245 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 07:00:23,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4247 conditions, 3749 events. 646/3749 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 26200 event pairs, 201 based on Foata normal form. 0/2963 useless extension candidates. Maximal degree in co-relation 2481. Up to 448 conditions per place. [2023-09-01 07:00:23,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 535 places, 627 transitions, 1352 flow [2023-09-01 07:00:23,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 530 places, 621 transitions, 1340 flow [2023-09-01 07:00:23,373 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:00:23,373 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 530 places, 621 transitions, 1340 flow [2023-09-01 07:00:23,374 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 530 places, 621 transitions, 1340 flow [2023-09-01 07:00:23,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 530 places, 621 transitions, 1340 flow [2023-09-01 07:00:24,332 INFO L130 PetriNetUnfolder]: 645/3743 cut-off events. [2023-09-01 07:00:24,332 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 07:00:24,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4241 conditions, 3743 events. 645/3743 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 26178 event pairs, 201 based on Foata normal form. 0/2962 useless extension candidates. Maximal degree in co-relation 2475. Up to 448 conditions per place. [2023-09-01 07:00:24,601 INFO L119 LiptonReduction]: Number of co-enabled transitions 265216 [2023-09-01 07:00:30,628 INFO L134 LiptonReduction]: Checked pairs total: 634392 [2023-09-01 07:00:30,629 INFO L136 LiptonReduction]: Total number of compositions: 499 [2023-09-01 07:00:30,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:00:30,633 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;@5b991de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:00:30,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:00:30,687 INFO L130 PetriNetUnfolder]: 175/622 cut-off events. [2023-09-01 07:00:30,688 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 07:00:30,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:00:30,688 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:00:30,688 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:00:30,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:00:30,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1410546962, now seen corresponding path program 1 times [2023-09-01 07:00:30,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:00:30,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780851409] [2023-09-01 07:00:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:00:30,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:00:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:30,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:00:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:30,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:00:30,763 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:00:30,763 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:00:30,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 07:00:30,764 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:00:30,764 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:00:30,764 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:00:30,764 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 07:00:30,792 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 07:00:30,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 590 places, 693 transitions, 1506 flow [2023-09-01 07:00:32,533 INFO L130 PetriNetUnfolder]: 1248/6643 cut-off events. [2023-09-01 07:00:32,534 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 07:00:32,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7728 conditions, 6643 events. 1248/6643 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 54667 event pairs, 522 based on Foata normal form. 0/5309 useless extension candidates. Maximal degree in co-relation 4231. Up to 1024 conditions per place. [2023-09-01 07:00:32,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 590 places, 693 transitions, 1506 flow [2023-09-01 07:00:32,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 585 places, 687 transitions, 1494 flow [2023-09-01 07:00:32,901 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:00:32,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 585 places, 687 transitions, 1494 flow [2023-09-01 07:00:32,902 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 585 places, 687 transitions, 1494 flow [2023-09-01 07:00:32,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 585 places, 687 transitions, 1494 flow [2023-09-01 07:00:34,581 INFO L130 PetriNetUnfolder]: 1247/6637 cut-off events. [2023-09-01 07:00:34,582 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 07:00:34,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7722 conditions, 6637 events. 1247/6637 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 54632 event pairs, 522 based on Foata normal form. 0/5308 useless extension candidates. Maximal degree in co-relation 4225. Up to 1024 conditions per place. [2023-09-01 07:00:35,287 INFO L119 LiptonReduction]: Number of co-enabled transitions 337408 [2023-09-01 07:00:43,507 INFO L134 LiptonReduction]: Checked pairs total: 891699 [2023-09-01 07:00:43,508 INFO L136 LiptonReduction]: Total number of compositions: 540 [2023-09-01 07:00:43,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:00:43,511 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;@5b991de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:00:43,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:00:43,585 INFO L130 PetriNetUnfolder]: 217/788 cut-off events. [2023-09-01 07:00:43,585 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 07:00:43,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:00:43,586 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:00:43,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:00:43,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:00:43,586 INFO L85 PathProgramCache]: Analyzing trace with hash 439929576, now seen corresponding path program 1 times [2023-09-01 07:00:43,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:00:43,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464862838] [2023-09-01 07:00:43,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:00:43,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:00:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:43,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:00:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:43,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:00:43,620 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:00:43,620 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:00:43,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 07:00:43,620 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:00:43,621 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:00:43,621 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:00:43,621 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 07:00:43,650 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 07:00:43,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 645 places, 759 transitions, 1662 flow [2023-09-01 07:00:47,615 INFO L130 PetriNetUnfolder]: 2554/12417 cut-off events. [2023-09-01 07:00:47,615 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 07:00:47,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14794 conditions, 12417 events. 2554/12417 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 118595 event pairs, 1291 based on Foata normal form. 0/10023 useless extension candidates. Maximal degree in co-relation 7710. Up to 2304 conditions per place. [2023-09-01 07:00:47,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 645 places, 759 transitions, 1662 flow [2023-09-01 07:00:48,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 640 places, 753 transitions, 1650 flow [2023-09-01 07:00:48,156 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:00:48,156 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 640 places, 753 transitions, 1650 flow [2023-09-01 07:00:48,157 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 640 places, 753 transitions, 1650 flow [2023-09-01 07:00:48,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 640 places, 753 transitions, 1650 flow [2023-09-01 07:00:52,048 INFO L130 PetriNetUnfolder]: 2553/12411 cut-off events. [2023-09-01 07:00:52,048 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 07:00:52,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14788 conditions, 12411 events. 2553/12411 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 118545 event pairs, 1291 based on Foata normal form. 0/10022 useless extension candidates. Maximal degree in co-relation 7704. Up to 2304 conditions per place. [2023-09-01 07:00:53,436 INFO L119 LiptonReduction]: Number of co-enabled transitions 418176 [2023-09-01 07:01:02,421 INFO L134 LiptonReduction]: Checked pairs total: 1118148 [2023-09-01 07:01:02,421 INFO L136 LiptonReduction]: Total number of compositions: 596 [2023-09-01 07:01:02,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:01:02,423 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;@5b991de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:01:02,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:01:02,520 INFO L130 PetriNetUnfolder]: 274/1012 cut-off events. [2023-09-01 07:01:02,521 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 07:01:02,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:01:02,521 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:01:02,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:01:02,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:01:02,522 INFO L85 PathProgramCache]: Analyzing trace with hash 607347159, now seen corresponding path program 1 times [2023-09-01 07:01:02,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:01:02,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181410550] [2023-09-01 07:01:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:01:02,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:01:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:02,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:01:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:02,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:01:02,577 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:01:02,577 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:01:02,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 07:01:02,577 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:01:02,579 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:01:02,580 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:01:02,580 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 07:01:02,630 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 07:01:02,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 700 places, 825 transitions, 1820 flow [2023-09-01 07:01:12,031 INFO L130 PetriNetUnfolder]: 5396/24079 cut-off events. [2023-09-01 07:01:12,031 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 07:01:13,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29285 conditions, 24079 events. 5396/24079 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 262617 event pairs, 3084 based on Foata normal form. 0/19601 useless extension candidates. Maximal degree in co-relation 14774. Up to 5120 conditions per place. [2023-09-01 07:01:13,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 700 places, 825 transitions, 1820 flow [2023-09-01 07:01:13,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 695 places, 819 transitions, 1808 flow [2023-09-01 07:01:13,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:01:13,838 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 695 places, 819 transitions, 1808 flow [2023-09-01 07:01:13,838 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 695 places, 819 transitions, 1808 flow [2023-09-01 07:01:13,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 695 places, 819 transitions, 1808 flow [2023-09-01 07:01:23,203 INFO L130 PetriNetUnfolder]: 5395/24073 cut-off events. [2023-09-01 07:01:23,203 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 07:01:24,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29279 conditions, 24073 events. 5395/24073 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 262735 event pairs, 3084 based on Foata normal form. 0/19600 useless extension candidates. Maximal degree in co-relation 14768. Up to 5120 conditions per place. [2023-09-01 07:01:26,271 INFO L119 LiptonReduction]: Number of co-enabled transitions 507520 [2023-09-01 07:01:34,441 INFO L134 LiptonReduction]: Checked pairs total: 1367691 [2023-09-01 07:01:34,442 INFO L136 LiptonReduction]: Total number of compositions: 638 [2023-09-01 07:01:34,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:01:34,452 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;@5b991de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:01:34,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:01:34,593 INFO L130 PetriNetUnfolder]: 363/1332 cut-off events. [2023-09-01 07:01:34,593 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 07:01:34,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:01:34,594 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:01:34,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:01:34,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:01:34,594 INFO L85 PathProgramCache]: Analyzing trace with hash 127703512, now seen corresponding path program 1 times [2023-09-01 07:01:34,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:01:34,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456414714] [2023-09-01 07:01:34,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:01:34,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:01:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:34,614 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:01:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:34,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:01:34,632 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:01:34,632 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:01:34,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 07:01:34,632 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:01:34,633 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:01:34,633 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:01:34,633 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 07:01:34,669 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 07:01:34,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 755 places, 891 transitions, 1980 flow [2023-09-01 07:01:54,866 INFO L130 PetriNetUnfolder]: 11566/47773 cut-off events. [2023-09-01 07:01:54,866 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 07:01:58,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59137 conditions, 47773 events. 11566/47773 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 583412 event pairs, 7181 based on Foata normal form. 0/39163 useless extension candidates. Maximal degree in co-relation 29263. Up to 11264 conditions per place. [2023-09-01 07:01:58,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 755 places, 891 transitions, 1980 flow [2023-09-01 07:02:00,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 750 places, 885 transitions, 1968 flow [2023-09-01 07:02:00,050 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:02:00,050 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 750 places, 885 transitions, 1968 flow [2023-09-01 07:02:00,050 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 750 places, 885 transitions, 1968 flow [2023-09-01 07:02:00,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 750 places, 885 transitions, 1968 flow [2023-09-01 07:02:20,457 INFO L130 PetriNetUnfolder]: 11565/47767 cut-off events. [2023-09-01 07:02:20,457 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 07:02:25,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59131 conditions, 47767 events. 11565/47767 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 583116 event pairs, 7181 based on Foata normal form. 0/39162 useless extension candidates. Maximal degree in co-relation 29257. Up to 11264 conditions per place. [2023-09-01 07:02:32,057 INFO L119 LiptonReduction]: Number of co-enabled transitions 605440 [2023-09-01 07:02:40,443 INFO L134 LiptonReduction]: Checked pairs total: 1488158 [2023-09-01 07:02:40,443 INFO L136 LiptonReduction]: Total number of compositions: 699 [2023-09-01 07:02:40,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:02:40,445 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;@5b991de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:02:40,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:02:40,719 INFO L130 PetriNetUnfolder]: 512/1810 cut-off events. [2023-09-01 07:02:40,719 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 07:02:40,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:02:40,720 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:02:40,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:02:40,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:02:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2021231083, now seen corresponding path program 1 times [2023-09-01 07:02:40,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:02:40,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845435607] [2023-09-01 07:02:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:02:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:02:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:40,760 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:02:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:40,792 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:02:40,793 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:02:40,793 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:02:40,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 07:02:40,794 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:02:40,794 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:02:40,794 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:02:40,795 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 07:02:40,830 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 07:02:40,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 810 places, 957 transitions, 2142 flow [2023-09-01 07:03:25,078 INFO L130 PetriNetUnfolder]: 24904/96043 cut-off events. [2023-09-01 07:03:25,078 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 07:03:34,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120734 conditions, 96043 events. 24904/96043 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 1293035 event pairs, 16398 based on Foata normal form. 0/79205 useless extension candidates. Maximal degree in co-relation 59113. Up to 24576 conditions per place. [2023-09-01 07:03:34,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 810 places, 957 transitions, 2142 flow [2023-09-01 07:03:38,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 805 places, 951 transitions, 2130 flow [2023-09-01 07:03:38,920 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:03:38,920 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 805 places, 951 transitions, 2130 flow [2023-09-01 07:03:38,921 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 805 places, 951 transitions, 2130 flow [2023-09-01 07:03:38,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 805 places, 951 transitions, 2130 flow [2023-09-01 07:04:23,758 INFO L130 PetriNetUnfolder]: 24903/96037 cut-off events. [2023-09-01 07:04:23,759 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 07:04:32,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120728 conditions, 96037 events. 24903/96037 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 1293162 event pairs, 16398 based on Foata normal form. 0/79204 useless extension candidates. Maximal degree in co-relation 59107. Up to 24576 conditions per place. [2023-09-01 07:04:45,456 INFO L119 LiptonReduction]: Number of co-enabled transitions 711936 [2023-09-01 07:04:54,788 INFO L134 LiptonReduction]: Checked pairs total: 1747991 [2023-09-01 07:04:54,788 INFO L136 LiptonReduction]: Total number of compositions: 746 [2023-09-01 07:04:54,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:04:54,790 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;@5b991de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:04:54,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:04:55,118 INFO L130 PetriNetUnfolder]: 729/2507 cut-off events. [2023-09-01 07:04:55,119 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 07:04:55,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:04:55,119 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 07:04:55,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:04:55,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:04:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1544435622, now seen corresponding path program 1 times [2023-09-01 07:04:55,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:04:55,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364200540] [2023-09-01 07:04:55,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:04:55,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:04:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:04:55,147 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:04:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:04:55,165 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:04:55,166 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:04:55,166 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:04:55,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 07:04:55,166 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:04:55,167 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:04:55,167 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:04:55,167 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 07:04:55,209 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 07:04:55,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 865 places, 1023 transitions, 2306 flow