./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing-overflow.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_78-equ_racing-overflow.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 8e4241de9ab6aaee40e34a0aea220f2af2541cd79c1f3c4ee08672ad0bf05f65 --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 06:58:42,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:58:42,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:58:42,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:58:42,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:58:42,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:58:42,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:58:42,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:58:42,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:58:42,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:58:42,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:58:42,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:58:42,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:58:42,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:58:42,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:58:42,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:58:42,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:58:42,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:58:42,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:58:42,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:58:42,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:58:42,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:58:42,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:58:42,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:58:42,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:58:42,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:58:42,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:58:42,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:58:42,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:58:42,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:58:42,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:58:42,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:58:42,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:58:42,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:58:42,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:58:42,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:58:42,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:58:42,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:58:42,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:58:42,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:58:42,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:58:42,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:58:42,823 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:58:42,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:58:42,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:58:42,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:58:42,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:58:42,826 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:58:42,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:58:42,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:58:42,827 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:58:42,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:58:42,828 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:58:42,828 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:58:42,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:58:42,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:58:42,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:58:42,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:58:42,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:58:42,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:58:42,830 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:58:42,830 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:58:42,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:58:42,830 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:58:42,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:58:42,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:58:42,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:58:42,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:58:42,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:58:42,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:58:42,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:58:42,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:58:42,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:58:42,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:58:42,833 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:58:42,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:58:42,833 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:58:42,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:58:42,833 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:58:42,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4241de9ab6aaee40e34a0aea220f2af2541cd79c1f3c4ee08672ad0bf05f65 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:58:43,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:58:43,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:58:43,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:58:43,158 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:58:43,158 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:58:43,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing-overflow.i [2023-09-01 06:58:44,433 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:58:44,682 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:58:44,683 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing-overflow.i [2023-09-01 06:58:44,705 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/229636699/feb16178614e4c31ad75d009d9fdf2df/FLAG949e2d6a6 [2023-09-01 06:58:44,721 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/229636699/feb16178614e4c31ad75d009d9fdf2df [2023-09-01 06:58:44,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:58:44,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:58:44,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:58:44,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:58:44,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:58:44,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:58:44" (1/1) ... [2023-09-01 06:58:44,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73eb3825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:44, skipping insertion in model container [2023-09-01 06:58:44,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:58:44" (1/1) ... [2023-09-01 06:58:44,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:58:44,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:58:45,182 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_78-equ_racing-overflow.i[47038,47051] [2023-09-01 06:58:45,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:58:45,232 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:58:45,275 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_78-equ_racing-overflow.i[47038,47051] [2023-09-01 06:58:45,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:58:45,371 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:58:45,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45 WrapperNode [2023-09-01 06:58:45,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:58:45,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:58:45,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:58:45,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:58:45,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45" (1/1) ... [2023-09-01 06:58:45,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45" (1/1) ... [2023-09-01 06:58:45,445 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 217 [2023-09-01 06:58:45,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:58:45,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:58:45,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:58:45,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:58:45,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45" (1/1) ... [2023-09-01 06:58:45,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45" (1/1) ... [2023-09-01 06:58:45,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45" (1/1) ... [2023-09-01 06:58:45,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45" (1/1) ... [2023-09-01 06:58:45,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45" (1/1) ... [2023-09-01 06:58:45,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45" (1/1) ... [2023-09-01 06:58:45,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45" (1/1) ... [2023-09-01 06:58:45,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45" (1/1) ... [2023-09-01 06:58:45,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:58:45,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:58:45,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:58:45,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:58:45,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45" (1/1) ... [2023-09-01 06:58:45,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:58:45,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:58:45,525 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 06:58:45,538 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 06:58:45,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:58:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:58:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:58:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:58:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:58:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:58:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:58:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:58:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:58:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:58:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:58:45,564 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 06:58:45,728 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:58:45,730 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:58:46,044 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:58:46,056 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:58:46,056 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-09-01 06:58:46,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:58:46 BoogieIcfgContainer [2023-09-01 06:58:46,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:58:46,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:58:46,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:58:46,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:58:46,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:58:44" (1/3) ... [2023-09-01 06:58:46,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc733c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:58:46, skipping insertion in model container [2023-09-01 06:58:46,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:58:45" (2/3) ... [2023-09-01 06:58:46,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc733c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:58:46, skipping insertion in model container [2023-09-01 06:58:46,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:58:46" (3/3) ... [2023-09-01 06:58:46,065 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing-overflow.i [2023-09-01 06:58:46,071 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:58:46,079 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:58:46,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-09-01 06:58:46,080 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:58:46,157 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:58:46,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 228 transitions, 464 flow [2023-09-01 06:58:46,311 INFO L130 PetriNetUnfolder]: 42/305 cut-off events. [2023-09-01 06:58:46,311 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:58:46,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 305 events. 42/305 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 986 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-09-01 06:58:46,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 228 transitions, 464 flow [2023-09-01 06:58:46,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 215 transitions, 435 flow [2023-09-01 06:58:46,329 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:58:46,341 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 215 transitions, 435 flow [2023-09-01 06:58:46,343 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 215 transitions, 435 flow [2023-09-01 06:58:46,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 215 transitions, 435 flow [2023-09-01 06:58:46,398 INFO L130 PetriNetUnfolder]: 41/292 cut-off events. [2023-09-01 06:58:46,398 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:58:46,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 292 events. 41/292 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 922 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-09-01 06:58:46,409 INFO L119 LiptonReduction]: Number of co-enabled transitions 11136 [2023-09-01 06:58:52,163 INFO L134 LiptonReduction]: Checked pairs total: 22083 [2023-09-01 06:58:52,164 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-09-01 06:58:52,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:58:52,208 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;@5330db2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:58:52,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:58:52,214 INFO L130 PetriNetUnfolder]: 11/46 cut-off events. [2023-09-01 06:58:52,215 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:58:52,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:58:52,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:58:52,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:58:52,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:58:52,230 INFO L85 PathProgramCache]: Analyzing trace with hash -592564394, now seen corresponding path program 1 times [2023-09-01 06:58:52,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:58:52,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199019526] [2023-09-01 06:58:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:58:52,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:58:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:58:52,403 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:58:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:58:52,466 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:58:52,467 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:58:52,468 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:58:52,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:58:52,470 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:58:52,472 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:58:52,473 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:58:52,473 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:58:52,499 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:58:52,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 294 transitions, 606 flow [2023-09-01 06:58:52,576 INFO L130 PetriNetUnfolder]: 71/484 cut-off events. [2023-09-01 06:58:52,577 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:58:52,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 484 events. 71/484 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1897 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 307. Up to 12 conditions per place. [2023-09-01 06:58:52,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 294 transitions, 606 flow [2023-09-01 06:58:52,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 290 transitions, 598 flow [2023-09-01 06:58:52,584 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:58:52,584 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 290 transitions, 598 flow [2023-09-01 06:58:52,584 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 290 transitions, 598 flow [2023-09-01 06:58:52,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 290 transitions, 598 flow [2023-09-01 06:58:52,651 INFO L130 PetriNetUnfolder]: 71/480 cut-off events. [2023-09-01 06:58:52,652 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:58:52,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 480 events. 71/480 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. 0/375 useless extension candidates. Maximal degree in co-relation 303. Up to 12 conditions per place. [2023-09-01 06:58:52,671 INFO L119 LiptonReduction]: Number of co-enabled transitions 32896 [2023-09-01 06:59:00,480 INFO L134 LiptonReduction]: Checked pairs total: 79517 [2023-09-01 06:59:00,481 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-09-01 06:59:00,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:59:00,484 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;@5330db2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:59:00,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:59:00,493 INFO L130 PetriNetUnfolder]: 35/124 cut-off events. [2023-09-01 06:59:00,493 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:59:00,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:59:00,494 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:59:00,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:59:00,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:59:00,495 INFO L85 PathProgramCache]: Analyzing trace with hash -52717802, now seen corresponding path program 1 times [2023-09-01 06:59:00,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:59:00,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117170833] [2023-09-01 06:59:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:59:00,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:59:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:00,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:59:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:00,549 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:59:00,549 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:59:00,549 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:59:00,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:59:00,550 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:59:00,550 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:59:00,551 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:59:00,551 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:59:00,591 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:59:00,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 360 transitions, 750 flow [2023-09-01 06:59:00,689 INFO L130 PetriNetUnfolder]: 105/702 cut-off events. [2023-09-01 06:59:00,690 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:59:00,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 702 events. 105/702 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3040 event pairs, 1 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 492. Up to 16 conditions per place. [2023-09-01 06:59:00,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 360 transitions, 750 flow [2023-09-01 06:59:00,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 356 transitions, 742 flow [2023-09-01 06:59:00,711 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:59:00,712 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 356 transitions, 742 flow [2023-09-01 06:59:00,712 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 356 transitions, 742 flow [2023-09-01 06:59:00,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 356 transitions, 742 flow [2023-09-01 06:59:00,822 INFO L130 PetriNetUnfolder]: 105/698 cut-off events. [2023-09-01 06:59:00,822 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:59:00,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 698 events. 105/698 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3024 event pairs, 1 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 488. Up to 16 conditions per place. [2023-09-01 06:59:00,855 INFO L119 LiptonReduction]: Number of co-enabled transitions 62208 [2023-09-01 06:59:08,580 INFO L134 LiptonReduction]: Checked pairs total: 152797 [2023-09-01 06:59:08,581 INFO L136 LiptonReduction]: Total number of compositions: 298 [2023-09-01 06:59:08,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:59:08,583 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;@5330db2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:59:08,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:59:08,602 INFO L130 PetriNetUnfolder]: 59/201 cut-off events. [2023-09-01 06:59:08,603 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:59:08,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:59:08,603 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:59:08,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:59:08,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:59:08,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1652880386, now seen corresponding path program 1 times [2023-09-01 06:59:08,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:59:08,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668028775] [2023-09-01 06:59:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:59:08,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:59:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:08,630 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:59:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:08,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:59:08,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:59:08,656 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:59:08,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:59:08,656 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:59:08,657 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:59:08,657 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:59:08,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:59:08,681 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:59:08,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 368 places, 426 transitions, 896 flow [2023-09-01 06:59:08,918 INFO L130 PetriNetUnfolder]: 151/1000 cut-off events. [2023-09-01 06:59:08,918 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:59:08,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 1000 events. 151/1000 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4670 event pairs, 6 based on Foata normal form. 0/771 useless extension candidates. Maximal degree in co-relation 722. Up to 32 conditions per place. [2023-09-01 06:59:08,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 368 places, 426 transitions, 896 flow [2023-09-01 06:59:08,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 422 transitions, 888 flow [2023-09-01 06:59:08,946 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:59:08,946 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 364 places, 422 transitions, 888 flow [2023-09-01 06:59:08,946 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 364 places, 422 transitions, 888 flow [2023-09-01 06:59:08,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 364 places, 422 transitions, 888 flow [2023-09-01 06:59:09,146 INFO L130 PetriNetUnfolder]: 151/996 cut-off events. [2023-09-01 06:59:09,147 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:59:09,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 996 events. 151/996 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4677 event pairs, 6 based on Foata normal form. 0/771 useless extension candidates. Maximal degree in co-relation 718. Up to 32 conditions per place. [2023-09-01 06:59:09,201 INFO L119 LiptonReduction]: Number of co-enabled transitions 100096 [2023-09-01 06:59:15,737 INFO L134 LiptonReduction]: Checked pairs total: 232022 [2023-09-01 06:59:15,737 INFO L136 LiptonReduction]: Total number of compositions: 345 [2023-09-01 06:59:15,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:59:15,740 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;@5330db2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:59:15,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:59:15,762 INFO L130 PetriNetUnfolder]: 83/285 cut-off events. [2023-09-01 06:59:15,763 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:59:15,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:59:15,763 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:59:15,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:59:15,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:59:15,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1058427323, now seen corresponding path program 1 times [2023-09-01 06:59:15,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:59:15,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132964024] [2023-09-01 06:59:15,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:59:15,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:59:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:15,822 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:59:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:15,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:59:15,866 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:59:15,866 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:59:15,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:59:15,867 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:59:15,867 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:59:15,867 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:59:15,868 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:59:15,902 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:59:15,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 492 transitions, 1044 flow [2023-09-01 06:59:16,245 INFO L130 PetriNetUnfolder]: 225/1462 cut-off events. [2023-09-01 06:59:16,245 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:59:16,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 1462 events. 225/1462 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7584 event pairs, 23 based on Foata normal form. 0/1133 useless extension candidates. Maximal degree in co-relation 1045. Up to 80 conditions per place. [2023-09-01 06:59:16,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 492 transitions, 1044 flow [2023-09-01 06:59:16,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 419 places, 488 transitions, 1036 flow [2023-09-01 06:59:16,280 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:59:16,280 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 419 places, 488 transitions, 1036 flow [2023-09-01 06:59:16,281 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 419 places, 488 transitions, 1036 flow [2023-09-01 06:59:16,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 419 places, 488 transitions, 1036 flow [2023-09-01 06:59:16,583 INFO L130 PetriNetUnfolder]: 225/1458 cut-off events. [2023-09-01 06:59:16,583 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:59:16,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 1458 events. 225/1458 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7539 event pairs, 23 based on Foata normal form. 0/1133 useless extension candidates. Maximal degree in co-relation 1041. Up to 80 conditions per place. [2023-09-01 06:59:16,691 INFO L119 LiptonReduction]: Number of co-enabled transitions 146560 [2023-09-01 06:59:24,823 INFO L134 LiptonReduction]: Checked pairs total: 374816 [2023-09-01 06:59:24,823 INFO L136 LiptonReduction]: Total number of compositions: 394 [2023-09-01 06:59:24,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:59:24,825 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;@5330db2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:59:24,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:59:24,853 INFO L130 PetriNetUnfolder]: 109/378 cut-off events. [2023-09-01 06:59:24,854 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:59:24,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:59:24,854 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:59:24,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:59:24,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:59:24,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1703281912, now seen corresponding path program 1 times [2023-09-01 06:59:24,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:59:24,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331148818] [2023-09-01 06:59:24,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:59:24,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:59:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:24,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:59:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:24,938 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:59:24,938 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:59:24,939 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:59:24,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:59:24,939 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:59:24,942 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:59:24,942 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:59:24,943 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:59:24,974 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:59:24,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 478 places, 558 transitions, 1194 flow [2023-09-01 06:59:25,545 INFO L130 PetriNetUnfolder]: 363/2260 cut-off events. [2023-09-01 06:59:25,545 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:59:25,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 2260 events. 363/2260 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 13442 event pairs, 72 based on Foata normal form. 0/1767 useless extension candidates. Maximal degree in co-relation 1561. Up to 192 conditions per place. [2023-09-01 06:59:25,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 478 places, 558 transitions, 1194 flow [2023-09-01 06:59:25,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 474 places, 554 transitions, 1186 flow [2023-09-01 06:59:25,614 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:59:25,614 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 474 places, 554 transitions, 1186 flow [2023-09-01 06:59:25,614 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 474 places, 554 transitions, 1186 flow [2023-09-01 06:59:25,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 474 places, 554 transitions, 1186 flow [2023-09-01 06:59:26,181 INFO L130 PetriNetUnfolder]: 363/2256 cut-off events. [2023-09-01 06:59:26,182 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:59:26,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2488 conditions, 2256 events. 363/2256 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 13432 event pairs, 72 based on Foata normal form. 0/1767 useless extension candidates. Maximal degree in co-relation 1557. Up to 192 conditions per place. [2023-09-01 06:59:26,379 INFO L119 LiptonReduction]: Number of co-enabled transitions 201600 [2023-09-01 06:59:35,411 INFO L134 LiptonReduction]: Checked pairs total: 512710 [2023-09-01 06:59:35,412 INFO L136 LiptonReduction]: Total number of compositions: 455 [2023-09-01 06:59:35,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:59:35,414 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;@5330db2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:59:35,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:59:35,452 INFO L130 PetriNetUnfolder]: 135/476 cut-off events. [2023-09-01 06:59:35,453 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:59:35,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:59:35,453 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:59:35,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:59:35,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:59:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1170207761, now seen corresponding path program 1 times [2023-09-01 06:59:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:59:35,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893645772] [2023-09-01 06:59:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:59:35,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:59:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:35,488 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:59:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:35,526 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:59:35,527 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:59:35,528 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:59:35,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:59:35,528 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:59:35,531 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:59:35,532 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:59:35,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:59:35,568 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:59:35,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 533 places, 624 transitions, 1346 flow [2023-09-01 06:59:36,628 INFO L130 PetriNetUnfolder]: 645/3746 cut-off events. [2023-09-01 06:59:36,629 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:59:36,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4244 conditions, 3746 events. 645/3746 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 26054 event pairs, 201 based on Foata normal form. 0/2961 useless extension candidates. Maximal degree in co-relation 2478. Up to 448 conditions per place. [2023-09-01 06:59:36,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 533 places, 624 transitions, 1346 flow [2023-09-01 06:59:36,769 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 529 places, 620 transitions, 1338 flow [2023-09-01 06:59:36,770 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:59:36,770 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 529 places, 620 transitions, 1338 flow [2023-09-01 06:59:36,771 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 529 places, 620 transitions, 1338 flow [2023-09-01 06:59:36,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 529 places, 620 transitions, 1338 flow [2023-09-01 06:59:37,952 INFO L130 PetriNetUnfolder]: 645/3742 cut-off events. [2023-09-01 06:59:37,953 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:59:38,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 3742 events. 645/3742 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 26088 event pairs, 201 based on Foata normal form. 0/2961 useless extension candidates. Maximal degree in co-relation 2474. Up to 448 conditions per place. [2023-09-01 06:59:38,493 INFO L119 LiptonReduction]: Number of co-enabled transitions 265216 [2023-09-01 06:59:46,089 INFO L134 LiptonReduction]: Checked pairs total: 627860 [2023-09-01 06:59:46,089 INFO L136 LiptonReduction]: Total number of compositions: 500 [2023-09-01 06:59:46,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:59:46,095 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;@5330db2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:59:46,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:59:46,161 INFO L130 PetriNetUnfolder]: 172/618 cut-off events. [2023-09-01 06:59:46,162 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:59:46,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:59:46,162 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:59:46,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:59:46,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:59:46,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1293449514, now seen corresponding path program 1 times [2023-09-01 06:59:46,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:59:46,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015210047] [2023-09-01 06:59:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:59:46,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:59:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:46,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:59:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:46,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:59:46,216 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:59:46,217 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:59:46,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:59:46,217 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:59:46,218 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:59:46,218 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:59:46,218 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:59:46,260 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:59:46,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 588 places, 690 transitions, 1500 flow [2023-09-01 06:59:47,994 INFO L130 PetriNetUnfolder]: 1247/6640 cut-off events. [2023-09-01 06:59:47,994 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:59:48,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7725 conditions, 6640 events. 1247/6640 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 54576 event pairs, 522 based on Foata normal form. 0/5307 useless extension candidates. Maximal degree in co-relation 4228. Up to 1024 conditions per place. [2023-09-01 06:59:48,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 588 places, 690 transitions, 1500 flow [2023-09-01 06:59:48,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 584 places, 686 transitions, 1492 flow [2023-09-01 06:59:48,405 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:59:48,405 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 584 places, 686 transitions, 1492 flow [2023-09-01 06:59:48,405 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 584 places, 686 transitions, 1492 flow [2023-09-01 06:59:48,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 584 places, 686 transitions, 1492 flow [2023-09-01 06:59:50,254 INFO L130 PetriNetUnfolder]: 1247/6636 cut-off events. [2023-09-01 06:59:50,254 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:59:50,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7721 conditions, 6636 events. 1247/6636 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 54670 event pairs, 522 based on Foata normal form. 0/5307 useless extension candidates. Maximal degree in co-relation 4224. Up to 1024 conditions per place. [2023-09-01 06:59:50,758 INFO L119 LiptonReduction]: Number of co-enabled transitions 337408 [2023-09-01 06:59:58,882 INFO L134 LiptonReduction]: Checked pairs total: 889125 [2023-09-01 06:59:58,882 INFO L136 LiptonReduction]: Total number of compositions: 536 [2023-09-01 06:59:58,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:59:58,886 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;@5330db2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:59:58,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:59:58,971 INFO L130 PetriNetUnfolder]: 212/776 cut-off events. [2023-09-01 06:59:58,971 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:59:58,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:59:58,971 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:59:58,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:59:58,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:59:58,972 INFO L85 PathProgramCache]: Analyzing trace with hash 147624788, now seen corresponding path program 1 times [2023-09-01 06:59:58,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:59:58,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479300999] [2023-09-01 06:59:58,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:59:58,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:59:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:59,007 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:59:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:59,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:59:59,038 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:59:59,038 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:59:59,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:59:59,038 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:59:59,040 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:59:59,042 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:59:59,042 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:59:59,084 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:59:59,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 643 places, 756 transitions, 1656 flow [2023-09-01 07:00:02,835 INFO L130 PetriNetUnfolder]: 2553/12414 cut-off events. [2023-09-01 07:00:02,835 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 07:00:03,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14791 conditions, 12414 events. 2553/12414 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 118751 event pairs, 1291 based on Foata normal form. 0/10021 useless extension candidates. Maximal degree in co-relation 7707. Up to 2304 conditions per place. [2023-09-01 07:00:03,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 643 places, 756 transitions, 1656 flow [2023-09-01 07:00:03,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 639 places, 752 transitions, 1648 flow [2023-09-01 07:00:03,395 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:00:03,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 639 places, 752 transitions, 1648 flow [2023-09-01 07:00:03,395 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 639 places, 752 transitions, 1648 flow [2023-09-01 07:00:03,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 639 places, 752 transitions, 1648 flow [2023-09-01 07:00:06,963 INFO L130 PetriNetUnfolder]: 2553/12410 cut-off events. [2023-09-01 07:00:06,964 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 07:00:07,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14787 conditions, 12410 events. 2553/12410 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 118413 event pairs, 1291 based on Foata normal form. 0/10021 useless extension candidates. Maximal degree in co-relation 7703. Up to 2304 conditions per place. [2023-09-01 07:00:08,284 INFO L119 LiptonReduction]: Number of co-enabled transitions 418176 [2023-09-01 07:00:17,298 INFO L134 LiptonReduction]: Checked pairs total: 997124 [2023-09-01 07:00:17,298 INFO L136 LiptonReduction]: Total number of compositions: 601 [2023-09-01 07:00:17,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:00:17,301 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;@5330db2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:00:17,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:00:17,387 INFO L130 PetriNetUnfolder]: 271/1002 cut-off events. [2023-09-01 07:00:17,388 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 07:00:17,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:00:17,388 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:00:17,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:00:17,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:00:17,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1250705054, now seen corresponding path program 1 times [2023-09-01 07:00:17,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:00:17,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244620597] [2023-09-01 07:00:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:00:17,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:00:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:17,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:00:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:17,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:00:17,435 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:00:17,435 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:00:17,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 07:00:17,435 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:00:17,436 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:00:17,436 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:00:17,436 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 07:00:17,480 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 07:00:17,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 822 transitions, 1814 flow [2023-09-01 07:00:25,777 INFO L130 PetriNetUnfolder]: 5395/24076 cut-off events. [2023-09-01 07:00:25,777 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 07:00:26,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29282 conditions, 24076 events. 5395/24076 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 262566 event pairs, 3084 based on Foata normal form. 0/19599 useless extension candidates. Maximal degree in co-relation 14771. Up to 5120 conditions per place. [2023-09-01 07:00:26,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 698 places, 822 transitions, 1814 flow [2023-09-01 07:00:26,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 694 places, 818 transitions, 1806 flow [2023-09-01 07:00:26,817 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:00:26,817 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 694 places, 818 transitions, 1806 flow [2023-09-01 07:00:26,817 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 694 places, 818 transitions, 1806 flow [2023-09-01 07:00:26,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 694 places, 818 transitions, 1806 flow [2023-09-01 07:00:35,362 INFO L130 PetriNetUnfolder]: 5395/24072 cut-off events. [2023-09-01 07:00:35,363 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 07:00:36,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29278 conditions, 24072 events. 5395/24072 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 262714 event pairs, 3084 based on Foata normal form. 0/19599 useless extension candidates. Maximal degree in co-relation 14767. Up to 5120 conditions per place. [2023-09-01 07:00:38,083 INFO L119 LiptonReduction]: Number of co-enabled transitions 507520 [2023-09-01 07:00:47,338 INFO L134 LiptonReduction]: Checked pairs total: 1232037 [2023-09-01 07:00:47,339 INFO L136 LiptonReduction]: Total number of compositions: 646 [2023-09-01 07:00:47,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:00:47,341 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;@5330db2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:00:47,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:00:47,478 INFO L130 PetriNetUnfolder]: 363/1332 cut-off events. [2023-09-01 07:00:47,478 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 07:00:47,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:00:47,478 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:00:47,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:00:47,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:00:47,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1981440034, now seen corresponding path program 1 times [2023-09-01 07:00:47,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:00:47,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943121082] [2023-09-01 07:00:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:00:47,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:00:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:47,520 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:00:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:00:47,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:00:47,545 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:00:47,545 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:00:47,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 07:00:47,545 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:00:47,546 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:00:47,546 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:00:47,546 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 07:00:47,593 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 07:00:47,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 753 places, 888 transitions, 1974 flow [2023-09-01 07:01:05,890 INFO L130 PetriNetUnfolder]: 11565/47770 cut-off events. [2023-09-01 07:01:05,891 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 07:01:07,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59134 conditions, 47770 events. 11565/47770 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 583688 event pairs, 7181 based on Foata normal form. 0/39161 useless extension candidates. Maximal degree in co-relation 29260. Up to 11264 conditions per place. [2023-09-01 07:01:07,866 INFO L82 GeneralOperation]: Start removeDead. Operand has 753 places, 888 transitions, 1974 flow [2023-09-01 07:01:09,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 749 places, 884 transitions, 1966 flow [2023-09-01 07:01:09,213 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:01:09,213 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 749 places, 884 transitions, 1966 flow [2023-09-01 07:01:09,213 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 749 places, 884 transitions, 1966 flow [2023-09-01 07:01:09,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 749 places, 884 transitions, 1966 flow [2023-09-01 07:01:27,965 INFO L130 PetriNetUnfolder]: 11565/47766 cut-off events. [2023-09-01 07:01:27,965 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 07:01:29,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59130 conditions, 47766 events. 11565/47766 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 583283 event pairs, 7181 based on Foata normal form. 0/39161 useless extension candidates. Maximal degree in co-relation 29256. Up to 11264 conditions per place. [2023-09-01 07:01:35,803 INFO L119 LiptonReduction]: Number of co-enabled transitions 605440 [2023-09-01 07:01:46,254 INFO L134 LiptonReduction]: Checked pairs total: 1451614 [2023-09-01 07:01:46,254 INFO L136 LiptonReduction]: Total number of compositions: 703 [2023-09-01 07:01:46,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:01:46,255 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;@5330db2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:01:46,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:01:46,455 INFO L130 PetriNetUnfolder]: 514/1812 cut-off events. [2023-09-01 07:01:46,455 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 07:01:46,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:01:46,455 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:01:46,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:01:46,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:01:46,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1354230723, now seen corresponding path program 1 times [2023-09-01 07:01:46,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:01:46,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536578367] [2023-09-01 07:01:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:01:46,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:01:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:46,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:01:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:01:46,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:01:46,518 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:01:46,518 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:01:46,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 07:01:46,519 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:01:46,519 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:01:46,519 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:01:46,519 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 07:01:46,569 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 07:01:46,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 808 places, 954 transitions, 2136 flow [2023-09-01 07:02:26,988 INFO L130 PetriNetUnfolder]: 24903/96040 cut-off events. [2023-09-01 07:02:26,988 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 07:02:34,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120731 conditions, 96040 events. 24903/96040 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 1292375 event pairs, 16398 based on Foata normal form. 0/79203 useless extension candidates. Maximal degree in co-relation 59110. Up to 24576 conditions per place. [2023-09-01 07:02:34,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 808 places, 954 transitions, 2136 flow [2023-09-01 07:02:37,833 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 804 places, 950 transitions, 2128 flow [2023-09-01 07:02:37,833 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:02:37,833 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 804 places, 950 transitions, 2128 flow [2023-09-01 07:02:37,833 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 804 places, 950 transitions, 2128 flow [2023-09-01 07:02:37,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 804 places, 950 transitions, 2128 flow [2023-09-01 07:03:18,886 INFO L130 PetriNetUnfolder]: 24903/96036 cut-off events. [2023-09-01 07:03:18,886 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 07:03:25,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120727 conditions, 96036 events. 24903/96036 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 1292497 event pairs, 16398 based on Foata normal form. 0/79203 useless extension candidates. Maximal degree in co-relation 59106. Up to 24576 conditions per place. [2023-09-01 07:03:37,755 INFO L119 LiptonReduction]: Number of co-enabled transitions 711936 [2023-09-01 07:03:47,862 INFO L134 LiptonReduction]: Checked pairs total: 1751778 [2023-09-01 07:03:47,863 INFO L136 LiptonReduction]: Total number of compositions: 746 [2023-09-01 07:03:47,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:03:47,865 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;@5330db2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:03:47,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 07:03:48,160 INFO L130 PetriNetUnfolder]: 742/2520 cut-off events. [2023-09-01 07:03:48,160 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 07:03:48,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:03:48,161 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 07:03:48,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 07:03:48,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:03:48,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2002897474, now seen corresponding path program 1 times [2023-09-01 07:03:48,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:03:48,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650026157] [2023-09-01 07:03:48,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:03:48,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:03:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:03:48,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:03:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:03:48,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:03:48,224 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:03:48,224 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 07:03:48,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 07:03:48,225 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:03:48,225 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 07:03:48,225 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:03:48,225 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 07:03:48,277 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 07:03:48,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 863 places, 1020 transitions, 2300 flow