./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --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 06:29:50,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:29:50,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:29:50,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:29:50,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:29:50,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:29:50,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:29:50,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:29:50,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:29:50,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:29:50,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:29:50,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:29:50,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:29:50,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:29:50,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:29:50,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:29:50,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:29:50,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:29:50,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:29:50,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:29:50,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:29:50,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:29:50,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:29:50,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:29:50,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:29:50,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:29:50,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:29:50,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:29:50,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:29:50,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:29:50,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:29:50,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:29:50,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:29:50,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:29:50,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:29:50,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:29:50,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:29:50,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:29:50,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:29:50,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:29:50,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:29:50,765 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:29:50,801 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:29:50,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:29:50,802 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:29:50,802 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:29:50,803 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:29:50,803 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:29:50,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:29:50,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:29:50,805 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:29:50,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:29:50,805 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:29:50,806 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:29:50,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:29:50,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:29:50,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:29:50,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:29:50,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:29:50,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:29:50,807 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:29:50,807 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:29:50,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:29:50,807 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:29:50,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:29:50,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:29:50,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:29:50,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:29:50,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:29:50,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:29:50,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:29:50,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:29:50,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:29:50,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:29:50,809 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:29:50,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:29:50,809 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:29:50,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:29:50,810 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:29:50,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:29:51,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:29:51,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:29:51,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:29:51,129 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:29:51,130 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:29:51,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-09-01 06:29:52,224 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:29:52,475 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:29:52,476 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-09-01 06:29:52,493 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b076007c2/e75846ea08ef4592911d8f9eb265a0c4/FLAG42a34f9f0 [2023-09-01 06:29:52,510 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b076007c2/e75846ea08ef4592911d8f9eb265a0c4 [2023-09-01 06:29:52,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:29:52,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:29:52,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:29:52,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:29:52,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:29:52,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e369b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52, skipping insertion in model container [2023-09-01 06:29:52,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:29:52,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:29:52,780 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_05-lockfuns_racefree.i[30176,30189] [2023-09-01 06:29:52,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:29:52,806 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:29:52,836 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_05-lockfuns_racefree.i[30176,30189] [2023-09-01 06:29:52,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:29:52,874 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:29:52,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52 WrapperNode [2023-09-01 06:29:52,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:29:52,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:29:52,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:29:52,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:29:52,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,909 INFO L138 Inliner]: procedures = 172, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2023-09-01 06:29:52,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:29:52,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:29:52,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:29:52,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:29:52,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,927 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:29:52,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:29:52,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:29:52,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:29:52,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52" (1/1) ... [2023-09-01 06:29:52,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:29:52,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:29:52,969 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 06:29:52,985 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 06:29:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:29:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:29:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:29:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:29:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:29:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:29:52,997 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:29:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:29:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:29:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:29:52,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:29:52,999 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 06:29:53,094 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:29:53,095 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:29:53,228 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:29:53,233 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:29:53,233 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 06:29:53,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:29:53 BoogieIcfgContainer [2023-09-01 06:29:53,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:29:53,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:29:53,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:29:53,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:29:53,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:29:52" (1/3) ... [2023-09-01 06:29:53,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3daa2ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:29:53, skipping insertion in model container [2023-09-01 06:29:53,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:29:52" (2/3) ... [2023-09-01 06:29:53,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3daa2ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:29:53, skipping insertion in model container [2023-09-01 06:29:53,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:29:53" (3/3) ... [2023-09-01 06:29:53,248 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2023-09-01 06:29:53,253 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:29:53,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:29:53,259 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:29:53,259 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:29:53,333 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:29:53,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 118 transitions, 244 flow [2023-09-01 06:29:53,431 INFO L130 PetriNetUnfolder]: 17/152 cut-off events. [2023-09-01 06:29:53,433 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:29:53,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 152 events. 17/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 360 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2023-09-01 06:29:53,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 118 transitions, 244 flow [2023-09-01 06:29:53,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 109 transitions, 223 flow [2023-09-01 06:29:53,444 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:29:53,454 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 109 transitions, 223 flow [2023-09-01 06:29:53,458 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 109 transitions, 223 flow [2023-09-01 06:29:53,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 109 transitions, 223 flow [2023-09-01 06:29:53,481 INFO L130 PetriNetUnfolder]: 16/143 cut-off events. [2023-09-01 06:29:53,481 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:29:53,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 16/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 348 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2023-09-01 06:29:53,483 INFO L119 LiptonReduction]: Number of co-enabled transitions 3344 [2023-09-01 06:29:55,519 INFO L134 LiptonReduction]: Checked pairs total: 4615 [2023-09-01 06:29:55,519 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-09-01 06:29:55,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:29:55,536 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;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:29:55,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:29:55,542 INFO L130 PetriNetUnfolder]: 3/29 cut-off events. [2023-09-01 06:29:55,542 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:29:55,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:29:55,543 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:29:55,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:29:55,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:29:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash 619866491, now seen corresponding path program 1 times [2023-09-01 06:29:55,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:29:55,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829469718] [2023-09-01 06:29:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:29:55,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:29:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:29:55,656 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:29:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:29:55,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:29:55,690 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:29:55,691 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:29:55,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:29:55,693 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:29:55,695 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:29:55,696 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:29:55,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:29:55,714 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:29:55,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 158 transitions, 334 flow [2023-09-01 06:29:55,757 INFO L130 PetriNetUnfolder]: 31/262 cut-off events. [2023-09-01 06:29:55,757 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:29:55,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 262 events. 31/262 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 759 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2023-09-01 06:29:55,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 158 transitions, 334 flow [2023-09-01 06:29:55,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 158 transitions, 334 flow [2023-09-01 06:29:55,761 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:29:55,761 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 158 transitions, 334 flow [2023-09-01 06:29:55,762 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 158 transitions, 334 flow [2023-09-01 06:29:55,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 158 transitions, 334 flow [2023-09-01 06:29:55,787 INFO L130 PetriNetUnfolder]: 31/262 cut-off events. [2023-09-01 06:29:55,788 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:29:55,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 262 events. 31/262 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 759 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2023-09-01 06:29:55,796 INFO L119 LiptonReduction]: Number of co-enabled transitions 11020 [2023-09-01 06:29:58,124 INFO L134 LiptonReduction]: Checked pairs total: 21864 [2023-09-01 06:29:58,125 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-09-01 06:29:58,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:29:58,131 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:29:58,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:29:58,138 INFO L130 PetriNetUnfolder]: 12/67 cut-off events. [2023-09-01 06:29:58,138 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:29:58,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:29:58,138 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:29:58,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:29:58,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:29:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1153496988, now seen corresponding path program 1 times [2023-09-01 06:29:58,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:29:58,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481635908] [2023-09-01 06:29:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:29:58,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:29:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:29:58,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:29:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:29:58,198 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:29:58,198 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:29:58,198 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:29:58,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:29:58,198 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:29:58,199 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:29:58,199 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:29:58,199 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:29:58,220 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:29:58,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 198 transitions, 426 flow [2023-09-01 06:29:58,272 INFO L130 PetriNetUnfolder]: 50/411 cut-off events. [2023-09-01 06:29:58,273 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:29:58,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 411 events. 50/411 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1370 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 270. Up to 16 conditions per place. [2023-09-01 06:29:58,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 198 transitions, 426 flow [2023-09-01 06:29:58,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 198 transitions, 426 flow [2023-09-01 06:29:58,278 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:29:58,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 198 transitions, 426 flow [2023-09-01 06:29:58,278 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 198 transitions, 426 flow [2023-09-01 06:29:58,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 198 transitions, 426 flow [2023-09-01 06:29:58,310 INFO L130 PetriNetUnfolder]: 50/411 cut-off events. [2023-09-01 06:29:58,310 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:29:58,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 411 events. 50/411 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1370 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 270. Up to 16 conditions per place. [2023-09-01 06:29:58,323 INFO L119 LiptonReduction]: Number of co-enabled transitions 21204 [2023-09-01 06:30:00,528 INFO L134 LiptonReduction]: Checked pairs total: 47129 [2023-09-01 06:30:00,528 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-09-01 06:30:00,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:30:00,531 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;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:30:00,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:30:00,537 INFO L130 PetriNetUnfolder]: 22/108 cut-off events. [2023-09-01 06:30:00,538 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:30:00,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:30:00,538 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:30:00,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:30:00,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:30:00,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1417800294, now seen corresponding path program 1 times [2023-09-01 06:30:00,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:30:00,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406801126] [2023-09-01 06:30:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:30:00,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:30:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:00,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:30:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:00,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:30:00,596 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:30:00,596 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:30:00,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:30:00,597 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:30:00,597 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:30:00,597 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:30:00,598 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:30:00,621 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:30:00,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 238 transitions, 520 flow [2023-09-01 06:30:00,697 INFO L130 PetriNetUnfolder]: 81/640 cut-off events. [2023-09-01 06:30:00,698 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:30:00,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 640 events. 81/640 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2484 event pairs, 6 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 431. Up to 32 conditions per place. [2023-09-01 06:30:00,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 238 transitions, 520 flow [2023-09-01 06:30:00,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 238 transitions, 520 flow [2023-09-01 06:30:00,705 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:30:00,706 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 238 transitions, 520 flow [2023-09-01 06:30:00,706 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 238 transitions, 520 flow [2023-09-01 06:30:00,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 238 transitions, 520 flow [2023-09-01 06:30:00,768 INFO L130 PetriNetUnfolder]: 81/640 cut-off events. [2023-09-01 06:30:00,768 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:30:00,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 640 events. 81/640 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2484 event pairs, 6 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 431. Up to 32 conditions per place. [2023-09-01 06:30:00,789 INFO L119 LiptonReduction]: Number of co-enabled transitions 34504 [2023-09-01 06:30:03,112 INFO L134 LiptonReduction]: Checked pairs total: 89238 [2023-09-01 06:30:03,113 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-09-01 06:30:03,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:30:03,114 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;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:30:03,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:30:03,130 INFO L130 PetriNetUnfolder]: 29/154 cut-off events. [2023-09-01 06:30:03,131 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:30:03,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:30:03,132 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:30:03,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:30:03,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:30:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash 357257185, now seen corresponding path program 1 times [2023-09-01 06:30:03,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:30:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511926717] [2023-09-01 06:30:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:30:03,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:30:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:03,176 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:30:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:03,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:30:03,200 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:30:03,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:30:03,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:30:03,201 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:30:03,201 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:30:03,202 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:30:03,202 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:30:03,222 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:30:03,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 278 transitions, 616 flow [2023-09-01 06:30:03,395 INFO L130 PetriNetUnfolder]: 140/1033 cut-off events. [2023-09-01 06:30:03,396 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:30:03,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 1033 events. 140/1033 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4792 event pairs, 23 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 685. Up to 80 conditions per place. [2023-09-01 06:30:03,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 278 transitions, 616 flow [2023-09-01 06:30:03,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 278 transitions, 616 flow [2023-09-01 06:30:03,412 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:30:03,412 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 278 transitions, 616 flow [2023-09-01 06:30:03,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 278 transitions, 616 flow [2023-09-01 06:30:03,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 278 transitions, 616 flow [2023-09-01 06:30:03,578 INFO L130 PetriNetUnfolder]: 140/1033 cut-off events. [2023-09-01 06:30:03,579 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:30:03,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 1033 events. 140/1033 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4792 event pairs, 23 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 685. Up to 80 conditions per place. [2023-09-01 06:30:03,613 INFO L119 LiptonReduction]: Number of co-enabled transitions 50920 [2023-09-01 06:30:06,320 INFO L134 LiptonReduction]: Checked pairs total: 134609 [2023-09-01 06:30:06,321 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-09-01 06:30:06,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:30:06,322 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;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:30:06,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:30:06,336 INFO L130 PetriNetUnfolder]: 46/224 cut-off events. [2023-09-01 06:30:06,336 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:30:06,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:30:06,337 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:30:06,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:30:06,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:30:06,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1768184112, now seen corresponding path program 1 times [2023-09-01 06:30:06,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:30:06,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726898157] [2023-09-01 06:30:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:30:06,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:30:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:06,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:30:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:06,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:30:06,402 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:30:06,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:30:06,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:30:06,403 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:30:06,406 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:30:06,406 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:30:06,406 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:30:06,427 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:30:06,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 318 transitions, 714 flow [2023-09-01 06:30:06,715 INFO L130 PetriNetUnfolder]: 263/1762 cut-off events. [2023-09-01 06:30:06,716 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:30:06,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 1762 events. 263/1762 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 9957 event pairs, 72 based on Foata normal form. 0/1401 useless extension candidates. Maximal degree in co-relation 1132. Up to 192 conditions per place. [2023-09-01 06:30:06,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 318 transitions, 714 flow [2023-09-01 06:30:06,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 318 transitions, 714 flow [2023-09-01 06:30:06,747 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:30:06,747 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 318 transitions, 714 flow [2023-09-01 06:30:06,747 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 318 transitions, 714 flow [2023-09-01 06:30:06,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 318 transitions, 714 flow [2023-09-01 06:30:07,036 INFO L130 PetriNetUnfolder]: 263/1762 cut-off events. [2023-09-01 06:30:07,037 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:30:07,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 1762 events. 263/1762 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 9957 event pairs, 72 based on Foata normal form. 0/1401 useless extension candidates. Maximal degree in co-relation 1132. Up to 192 conditions per place. [2023-09-01 06:30:07,101 INFO L119 LiptonReduction]: Number of co-enabled transitions 70452 [2023-09-01 06:30:09,895 INFO L134 LiptonReduction]: Checked pairs total: 215024 [2023-09-01 06:30:09,895 INFO L136 LiptonReduction]: Total number of compositions: 229 [2023-09-01 06:30:09,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:30:09,896 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;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:30:09,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:30:09,916 INFO L130 PetriNetUnfolder]: 62/300 cut-off events. [2023-09-01 06:30:09,916 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:30:09,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:30:09,916 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:30:09,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:30:09,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:30:09,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1224288190, now seen corresponding path program 1 times [2023-09-01 06:30:09,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:30:09,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235809725] [2023-09-01 06:30:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:30:09,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:30:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:09,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:30:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:09,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:30:09,973 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:30:09,973 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:30:09,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:30:09,974 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:30:09,977 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:30:09,977 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:30:09,977 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:30:09,994 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:30:09,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 358 transitions, 814 flow [2023-09-01 06:30:10,509 INFO L130 PetriNetUnfolder]: 530/3179 cut-off events. [2023-09-01 06:30:10,510 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:30:10,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3677 conditions, 3179 events. 530/3179 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22304 event pairs, 201 based on Foata normal form. 0/2545 useless extension candidates. Maximal degree in co-relation 1980. Up to 448 conditions per place. [2023-09-01 06:30:10,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 358 transitions, 814 flow [2023-09-01 06:30:10,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 358 transitions, 814 flow [2023-09-01 06:30:10,577 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:30:10,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 319 places, 358 transitions, 814 flow [2023-09-01 06:30:10,578 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 319 places, 358 transitions, 814 flow [2023-09-01 06:30:10,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 358 transitions, 814 flow [2023-09-01 06:30:11,106 INFO L130 PetriNetUnfolder]: 530/3179 cut-off events. [2023-09-01 06:30:11,106 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:30:11,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3677 conditions, 3179 events. 530/3179 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22304 event pairs, 201 based on Foata normal form. 0/2545 useless extension candidates. Maximal degree in co-relation 1980. Up to 448 conditions per place. [2023-09-01 06:30:11,246 INFO L119 LiptonReduction]: Number of co-enabled transitions 93100 [2023-09-01 06:30:14,277 INFO L134 LiptonReduction]: Checked pairs total: 262573 [2023-09-01 06:30:14,278 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-09-01 06:30:14,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:30:14,282 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;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:30:14,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:30:14,313 INFO L130 PetriNetUnfolder]: 76/383 cut-off events. [2023-09-01 06:30:14,314 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:30:14,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:30:14,314 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:30:14,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:30:14,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:30:14,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1241993177, now seen corresponding path program 1 times [2023-09-01 06:30:14,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:30:14,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453599116] [2023-09-01 06:30:14,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:30:14,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:30:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:14,345 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:30:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:14,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:30:14,368 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:30:14,368 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:30:14,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:30:14,368 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:30:14,373 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:30:14,373 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:30:14,373 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:30:14,395 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:30:14,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 398 transitions, 916 flow [2023-09-01 06:30:15,439 INFO L130 PetriNetUnfolder]: 1117/6004 cut-off events. [2023-09-01 06:30:15,440 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:30:15,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7089 conditions, 6004 events. 1117/6004 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 49521 event pairs, 522 based on Foata normal form. 0/4841 useless extension candidates. Maximal degree in co-relation 3661. Up to 1024 conditions per place. [2023-09-01 06:30:15,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 398 transitions, 916 flow [2023-09-01 06:30:15,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 398 transitions, 916 flow [2023-09-01 06:30:15,582 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:30:15,582 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 398 transitions, 916 flow [2023-09-01 06:30:15,582 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 398 transitions, 916 flow [2023-09-01 06:30:15,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 398 transitions, 916 flow [2023-09-01 06:30:16,769 INFO L130 PetriNetUnfolder]: 1117/6004 cut-off events. [2023-09-01 06:30:16,769 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:30:16,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7089 conditions, 6004 events. 1117/6004 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 49521 event pairs, 522 based on Foata normal form. 0/4841 useless extension candidates. Maximal degree in co-relation 3661. Up to 1024 conditions per place. [2023-09-01 06:30:17,046 INFO L119 LiptonReduction]: Number of co-enabled transitions 118864 [2023-09-01 06:30:20,281 INFO L134 LiptonReduction]: Checked pairs total: 340618 [2023-09-01 06:30:20,285 INFO L136 LiptonReduction]: Total number of compositions: 281 [2023-09-01 06:30:20,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:30:20,287 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;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:30:20,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:30:20,321 INFO L130 PetriNetUnfolder]: 105/519 cut-off events. [2023-09-01 06:30:20,322 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:30:20,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:30:20,323 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:30:20,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:30:20,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:30:20,323 INFO L85 PathProgramCache]: Analyzing trace with hash 481132781, now seen corresponding path program 1 times [2023-09-01 06:30:20,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:30:20,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211333824] [2023-09-01 06:30:20,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:30:20,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:30:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:20,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:30:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:20,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:30:20,370 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:30:20,371 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:30:20,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:30:20,371 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:30:20,373 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:30:20,374 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:30:20,374 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:30:20,407 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:30:20,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 438 transitions, 1020 flow [2023-09-01 06:30:22,759 INFO L130 PetriNetUnfolder]: 2408/11709 cut-off events. [2023-09-01 06:30:22,760 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:30:23,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14086 conditions, 11709 events. 2408/11709 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 113210 event pairs, 1291 based on Foata normal form. 0/9505 useless extension candidates. Maximal degree in co-relation 7072. Up to 2304 conditions per place. [2023-09-01 06:30:23,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 389 places, 438 transitions, 1020 flow [2023-09-01 06:30:23,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 438 transitions, 1020 flow [2023-09-01 06:30:23,190 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:30:23,190 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 438 transitions, 1020 flow [2023-09-01 06:30:23,190 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 438 transitions, 1020 flow [2023-09-01 06:30:23,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 438 transitions, 1020 flow [2023-09-01 06:30:25,608 INFO L130 PetriNetUnfolder]: 2408/11709 cut-off events. [2023-09-01 06:30:25,608 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:30:25,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14086 conditions, 11709 events. 2408/11709 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 113210 event pairs, 1291 based on Foata normal form. 0/9505 useless extension candidates. Maximal degree in co-relation 7072. Up to 2304 conditions per place. [2023-09-01 06:30:26,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 147744 [2023-09-01 06:30:29,845 INFO L134 LiptonReduction]: Checked pairs total: 427193 [2023-09-01 06:30:29,845 INFO L136 LiptonReduction]: Total number of compositions: 310 [2023-09-01 06:30:29,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:30:29,847 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;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:30:29,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:30:29,965 INFO L130 PetriNetUnfolder]: 159/727 cut-off events. [2023-09-01 06:30:29,965 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 06:30:29,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:30:29,965 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:30:29,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:30:29,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:30:29,965 INFO L85 PathProgramCache]: Analyzing trace with hash 182362553, now seen corresponding path program 1 times [2023-09-01 06:30:29,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:30:29,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029486596] [2023-09-01 06:30:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:30:29,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:30:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:29,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:30:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:29,998 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:30:29,998 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:30:29,999 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:30:29,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:30:29,999 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:30:30,001 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:30:30,001 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:30:30,001 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:30:30,027 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:30:30,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 424 places, 478 transitions, 1126 flow [2023-09-01 06:30:35,799 INFO L130 PetriNetUnfolder]: 5235/23302 cut-off events. [2023-09-01 06:30:35,799 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:30:36,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28508 conditions, 23302 events. 5235/23302 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 254410 event pairs, 3084 based on Foata normal form. 0/19033 useless extension candidates. Maximal degree in co-relation 14069. Up to 5120 conditions per place. [2023-09-01 06:30:36,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 424 places, 478 transitions, 1126 flow [2023-09-01 06:30:36,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 424 places, 478 transitions, 1126 flow [2023-09-01 06:30:36,649 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:30:36,650 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 424 places, 478 transitions, 1126 flow [2023-09-01 06:30:36,650 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 424 places, 478 transitions, 1126 flow [2023-09-01 06:30:36,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 424 places, 478 transitions, 1126 flow [2023-09-01 06:30:41,969 INFO L130 PetriNetUnfolder]: 5235/23302 cut-off events. [2023-09-01 06:30:41,969 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:30:42,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28508 conditions, 23302 events. 5235/23302 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 254410 event pairs, 3084 based on Foata normal form. 0/19033 useless extension candidates. Maximal degree in co-relation 14069. Up to 5120 conditions per place. [2023-09-01 06:30:43,760 INFO L119 LiptonReduction]: Number of co-enabled transitions 179740 [2023-09-01 06:30:47,420 INFO L134 LiptonReduction]: Checked pairs total: 528590 [2023-09-01 06:30:47,420 INFO L136 LiptonReduction]: Total number of compositions: 337 [2023-09-01 06:30:47,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:30:47,421 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;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:30:47,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:30:47,528 INFO L130 PetriNetUnfolder]: 234/1014 cut-off events. [2023-09-01 06:30:47,528 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 06:30:47,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:30:47,529 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:30:47,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:30:47,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:30:47,529 INFO L85 PathProgramCache]: Analyzing trace with hash 433366570, now seen corresponding path program 1 times [2023-09-01 06:30:47,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:30:47,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450107642] [2023-09-01 06:30:47,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:30:47,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:30:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:47,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:30:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:30:47,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:30:47,575 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:30:47,575 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:30:47,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:30:47,575 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:30:47,576 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:30:47,576 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:30:47,576 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:30:47,599 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:30:47,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 518 transitions, 1234 flow [2023-09-01 06:30:59,713 INFO L130 PetriNetUnfolder]: 11390/46927 cut-off events. [2023-09-01 06:30:59,713 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:31:00,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58291 conditions, 46927 events. 11390/46927 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 573212 event pairs, 7181 based on Foata normal form. 0/38545 useless extension candidates. Maximal degree in co-relation 28491. Up to 11264 conditions per place. [2023-09-01 06:31:00,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 459 places, 518 transitions, 1234 flow [2023-09-01 06:31:01,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 518 transitions, 1234 flow [2023-09-01 06:31:01,505 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:31:01,505 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 459 places, 518 transitions, 1234 flow [2023-09-01 06:31:01,505 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 459 places, 518 transitions, 1234 flow [2023-09-01 06:31:01,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 518 transitions, 1234 flow [2023-09-01 06:31:13,306 INFO L130 PetriNetUnfolder]: 11390/46927 cut-off events. [2023-09-01 06:31:13,306 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:31:14,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58291 conditions, 46927 events. 11390/46927 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 573212 event pairs, 7181 based on Foata normal form. 0/38545 useless extension candidates. Maximal degree in co-relation 28491. Up to 11264 conditions per place. [2023-09-01 06:31:17,711 INFO L119 LiptonReduction]: Number of co-enabled transitions 214852 [2023-09-01 06:31:21,603 INFO L134 LiptonReduction]: Checked pairs total: 629056 [2023-09-01 06:31:21,603 INFO L136 LiptonReduction]: Total number of compositions: 365 [2023-09-01 06:31:21,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:31:21,605 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;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:31:21,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:31:21,728 INFO L130 PetriNetUnfolder]: 360/1450 cut-off events. [2023-09-01 06:31:21,729 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 06:31:21,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:31:21,729 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:31:21,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:31:21,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:31:21,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1679978680, now seen corresponding path program 1 times [2023-09-01 06:31:21,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:31:21,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060102351] [2023-09-01 06:31:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:31:21,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:31:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:31:21,745 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:31:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:31:21,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:31:21,758 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:31:21,758 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:31:21,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:31:21,758 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:31:21,759 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:31:21,759 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:31:21,759 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:31:21,783 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:31:21,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 558 transitions, 1344 flow [2023-09-01 06:31:49,983 INFO L130 PetriNetUnfolder]: 24713/95128 cut-off events. [2023-09-01 06:31:49,983 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:31:55,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119819 conditions, 95128 events. 24713/95128 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1429. Compared 1274724 event pairs, 16398 based on Foata normal form. 0/78537 useless extension candidates. Maximal degree in co-relation 58274. Up to 24576 conditions per place. [2023-09-01 06:31:55,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 494 places, 558 transitions, 1344 flow [2023-09-01 06:31:56,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 494 places, 558 transitions, 1344 flow [2023-09-01 06:31:56,994 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:31:56,994 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 494 places, 558 transitions, 1344 flow [2023-09-01 06:31:56,994 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 494 places, 558 transitions, 1344 flow [2023-09-01 06:31:56,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 558 transitions, 1344 flow [2023-09-01 06:32:23,235 INFO L130 PetriNetUnfolder]: 24713/95128 cut-off events. [2023-09-01 06:32:23,236 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:32:29,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119819 conditions, 95128 events. 24713/95128 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1429. Compared 1274724 event pairs, 16398 based on Foata normal form. 0/78537 useless extension candidates. Maximal degree in co-relation 58274. Up to 24576 conditions per place. [2023-09-01 06:32:36,613 INFO L119 LiptonReduction]: Number of co-enabled transitions 253080 [2023-09-01 06:32:41,015 INFO L134 LiptonReduction]: Checked pairs total: 750024 [2023-09-01 06:32:41,015 INFO L136 LiptonReduction]: Total number of compositions: 383 [2023-09-01 06:32:41,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:32:41,017 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;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:32:41,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:32:41,280 INFO L130 PetriNetUnfolder]: 572/2125 cut-off events. [2023-09-01 06:32:41,280 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 06:32:41,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:32:41,283 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:32:41,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:32:41,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:32:41,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1968741065, now seen corresponding path program 1 times [2023-09-01 06:32:41,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:32:41,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451220133] [2023-09-01 06:32:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:32:41,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:32:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:41,303 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:32:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:41,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:32:41,318 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:32:41,318 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:32:41,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:32:41,318 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:32:41,318 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:32:41,319 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:32:41,319 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:32:41,346 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:32:41,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 529 places, 598 transitions, 1456 flow [2023-09-01 06:33:40,703 INFO L130 PetriNetUnfolder]: 53396/193505 cut-off events. [2023-09-01 06:33:40,703 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:33:55,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246884 conditions, 193505 events. 53396/193505 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2831. Compared 2826172 event pairs, 36879 based on Foata normal form. 0/160513 useless extension candidates. Maximal degree in co-relation 119802. Up to 53248 conditions per place. [2023-09-01 06:33:55,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 529 places, 598 transitions, 1456 flow [2023-09-01 06:33:59,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 529 places, 598 transitions, 1456 flow [2023-09-01 06:33:59,712 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:33:59,712 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 529 places, 598 transitions, 1456 flow [2023-09-01 06:33:59,712 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 529 places, 598 transitions, 1456 flow [2023-09-01 06:33:59,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 529 places, 598 transitions, 1456 flow [2023-09-01 06:34:58,347 INFO L130 PetriNetUnfolder]: 53396/193505 cut-off events. [2023-09-01 06:34:58,347 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:35:12,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246884 conditions, 193505 events. 53396/193505 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2831. Compared 2826172 event pairs, 36879 based on Foata normal form. 0/160513 useless extension candidates. Maximal degree in co-relation 119802. Up to 53248 conditions per place. [2023-09-01 06:35:37,334 INFO L119 LiptonReduction]: Number of co-enabled transitions 294424 [2023-09-01 06:35:41,611 INFO L134 LiptonReduction]: Checked pairs total: 760718 [2023-09-01 06:35:41,611 INFO L136 LiptonReduction]: Total number of compositions: 420 [2023-09-01 06:35:41,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:41,612 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;@16381777, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:41,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:35:41,996 INFO L130 PetriNetUnfolder]: 926/3169 cut-off events. [2023-09-01 06:35:41,997 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 06:35:41,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:41,997 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:35:41,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:41,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:41,998 INFO L85 PathProgramCache]: Analyzing trace with hash -572291676, now seen corresponding path program 1 times [2023-09-01 06:35:41,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:41,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373318508] [2023-09-01 06:35:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:41,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:42,023 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:42,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:42,041 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:42,041 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:35:42,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 06:35:42,041 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:42,042 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:35:42,042 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:42,042 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 06:35:42,070 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 06:35:42,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 564 places, 638 transitions, 1570 flow