./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --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 00:29:52,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:29:52,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:29:52,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:29:52,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:29:52,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:29:52,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:29:52,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:29:52,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:29:52,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:29:52,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:29:52,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:29:52,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:29:52,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:29:52,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:29:52,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:29:52,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:29:52,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:29:52,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:29:52,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:29:52,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:29:52,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:29:52,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:29:53,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:29:53,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:29:53,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:29:53,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:29:53,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:29:53,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:29:53,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:29:53,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:29:53,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:29:53,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:29:53,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:29:53,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:29:53,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:29:53,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:29:53,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:29:53,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:29:53,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:29:53,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:29:53,023 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:29:53,044 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:29:53,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:29:53,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:29:53,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:29:53,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:29:53,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:29:53,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:29:53,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:29:53,047 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:29:53,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:29:53,047 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:29:53,047 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:29:53,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:29:53,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:29:53,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:29:53,048 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:29:53,048 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:29:53,049 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:29:53,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:29:53,049 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:29:53,049 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:29:53,049 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:29:53,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:29:53,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:29:53,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:29:53,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:29:53,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:29:53,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:29:53,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:29:53,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:29:53,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:29:53,051 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:29:53,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:29:53,052 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:29:53,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:29:53,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:29:53,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:29:53,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:29:53,404 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:29:53,405 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:29:53,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-09-01 00:29:54,637 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:29:54,906 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:29:54,907 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-09-01 00:29:54,921 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f0f32ec/0a3618310fc94b1a8f31ecedab4929f8/FLAG5e201a825 [2023-09-01 00:29:54,935 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f0f32ec/0a3618310fc94b1a8f31ecedab4929f8 [2023-09-01 00:29:54,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:29:54,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:29:54,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:29:54,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:29:54,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:29:54,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:29:54" (1/1) ... [2023-09-01 00:29:54,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef2ecdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:54, skipping insertion in model container [2023-09-01 00:29:54,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:29:54" (1/1) ... [2023-09-01 00:29:54,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:29:54,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:29:55,436 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_08-cond_racefree.i[41322,41335] [2023-09-01 00:29:55,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:29:55,482 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:29:55,528 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_08-cond_racefree.i[41322,41335] [2023-09-01 00:29:55,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:29:55,614 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:29:55,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55 WrapperNode [2023-09-01 00:29:55,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:29:55,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:29:55,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:29:55,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:29:55,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55" (1/1) ... [2023-09-01 00:29:55,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55" (1/1) ... [2023-09-01 00:29:55,677 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-09-01 00:29:55,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:29:55,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:29:55,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:29:55,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:29:55,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55" (1/1) ... [2023-09-01 00:29:55,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55" (1/1) ... [2023-09-01 00:29:55,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55" (1/1) ... [2023-09-01 00:29:55,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55" (1/1) ... [2023-09-01 00:29:55,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55" (1/1) ... [2023-09-01 00:29:55,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55" (1/1) ... [2023-09-01 00:29:55,710 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55" (1/1) ... [2023-09-01 00:29:55,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55" (1/1) ... [2023-09-01 00:29:55,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:29:55,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:29:55,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:29:55,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:29:55,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55" (1/1) ... [2023-09-01 00:29:55,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:29:55,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:29:55,758 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 00:29:55,781 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 00:29:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:29:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:29:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:29:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:29:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:29:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:29:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:29:55,794 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:29:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:29:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:29:55,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:29:55,795 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 00:29:55,925 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:29:55,927 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:29:56,184 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:29:56,191 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:29:56,191 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 00:29:56,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:29:56 BoogieIcfgContainer [2023-09-01 00:29:56,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:29:56,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:29:56,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:29:56,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:29:56,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:29:54" (1/3) ... [2023-09-01 00:29:56,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d97c3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:29:56, skipping insertion in model container [2023-09-01 00:29:56,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:55" (2/3) ... [2023-09-01 00:29:56,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d97c3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:29:56, skipping insertion in model container [2023-09-01 00:29:56,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:29:56" (3/3) ... [2023-09-01 00:29:56,200 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2023-09-01 00:29:56,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:29:56,215 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 00:29:56,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:29:56,261 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:29:56,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 129 transitions, 266 flow [2023-09-01 00:29:56,388 INFO L130 PetriNetUnfolder]: 23/178 cut-off events. [2023-09-01 00:29:56,389 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:29:56,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 178 events. 23/178 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 438 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2023-09-01 00:29:56,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 129 transitions, 266 flow [2023-09-01 00:29:56,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 124 transitions, 253 flow [2023-09-01 00:29:56,409 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:29:56,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 124 transitions, 253 flow [2023-09-01 00:29:56,429 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 124 transitions, 253 flow [2023-09-01 00:29:56,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 124 transitions, 253 flow [2023-09-01 00:29:56,464 INFO L130 PetriNetUnfolder]: 22/173 cut-off events. [2023-09-01 00:29:56,465 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:29:56,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 173 events. 22/173 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 423 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2023-09-01 00:29:56,468 INFO L119 LiptonReduction]: Number of co-enabled transitions 3080 [2023-09-01 00:29:59,846 INFO L134 LiptonReduction]: Checked pairs total: 5462 [2023-09-01 00:29:59,847 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-09-01 00:29:59,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:29:59,863 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:29:59,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:29:59,869 INFO L130 PetriNetUnfolder]: 4/32 cut-off events. [2023-09-01 00:29:59,869 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:29:59,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:29:59,870 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:29:59,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:29:59,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:29:59,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1754568811, now seen corresponding path program 1 times [2023-09-01 00:29:59,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:29:59,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17652539] [2023-09-01 00:29:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:29:59,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:00,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:00,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:00,125 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:00,126 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:00,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:30:00,129 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:00,161 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:00,162 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:00,162 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:30:00,180 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:30:00,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 159 transitions, 336 flow [2023-09-01 00:30:00,217 INFO L130 PetriNetUnfolder]: 40/286 cut-off events. [2023-09-01 00:30:00,217 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:30:00,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 286 events. 40/286 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 874 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 180. Up to 9 conditions per place. [2023-09-01 00:30:00,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 159 transitions, 336 flow [2023-09-01 00:30:00,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 159 transitions, 336 flow [2023-09-01 00:30:00,222 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:00,222 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 159 transitions, 336 flow [2023-09-01 00:30:00,223 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 159 transitions, 336 flow [2023-09-01 00:30:00,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 159 transitions, 336 flow [2023-09-01 00:30:00,253 INFO L130 PetriNetUnfolder]: 40/286 cut-off events. [2023-09-01 00:30:00,253 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:30:00,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 286 events. 40/286 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 874 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 180. Up to 9 conditions per place. [2023-09-01 00:30:00,262 INFO L119 LiptonReduction]: Number of co-enabled transitions 8344 [2023-09-01 00:30:03,383 INFO L134 LiptonReduction]: Checked pairs total: 19105 [2023-09-01 00:30:03,383 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-09-01 00:30:03,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:03,386 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:03,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:03,392 INFO L130 PetriNetUnfolder]: 13/72 cut-off events. [2023-09-01 00:30:03,393 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:30:03,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:03,393 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:30:03,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:03,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:03,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2092667315, now seen corresponding path program 1 times [2023-09-01 00:30:03,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:03,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064402578] [2023-09-01 00:30:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:03,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:03,442 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:03,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:03,489 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:03,489 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:03,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:30:03,489 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:03,490 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:03,490 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:03,490 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:30:03,523 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:30:03,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 189 transitions, 408 flow [2023-09-01 00:30:03,586 INFO L130 PetriNetUnfolder]: 62/435 cut-off events. [2023-09-01 00:30:03,587 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:30:03,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 435 events. 62/435 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1513 event pairs, 1 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 294. Up to 16 conditions per place. [2023-09-01 00:30:03,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 189 transitions, 408 flow [2023-09-01 00:30:03,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 189 transitions, 408 flow [2023-09-01 00:30:03,600 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:03,601 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 189 transitions, 408 flow [2023-09-01 00:30:03,604 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 189 transitions, 408 flow [2023-09-01 00:30:03,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 189 transitions, 408 flow [2023-09-01 00:30:03,655 INFO L130 PetriNetUnfolder]: 62/435 cut-off events. [2023-09-01 00:30:03,655 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:30:03,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 435 events. 62/435 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1513 event pairs, 1 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 294. Up to 16 conditions per place. [2023-09-01 00:30:03,672 INFO L119 LiptonReduction]: Number of co-enabled transitions 15120 [2023-09-01 00:30:06,756 INFO L134 LiptonReduction]: Checked pairs total: 37564 [2023-09-01 00:30:06,757 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-09-01 00:30:06,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:06,759 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:06,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:06,769 INFO L130 PetriNetUnfolder]: 26/120 cut-off events. [2023-09-01 00:30:06,769 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:30:06,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:06,769 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:30:06,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:06,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:06,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2124429100, now seen corresponding path program 1 times [2023-09-01 00:30:06,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:06,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89530023] [2023-09-01 00:30:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:06,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:06,795 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:06,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:06,817 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:06,817 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:06,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:30:06,818 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:06,818 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:06,818 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:06,818 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:30:06,836 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:30:06,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 219 transitions, 482 flow [2023-09-01 00:30:06,931 INFO L130 PetriNetUnfolder]: 96/668 cut-off events. [2023-09-01 00:30:06,931 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:30:06,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 668 events. 96/668 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2725 event pairs, 6 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 455. Up to 32 conditions per place. [2023-09-01 00:30:06,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 219 transitions, 482 flow [2023-09-01 00:30:06,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 219 transitions, 482 flow [2023-09-01 00:30:06,942 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:06,942 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 219 transitions, 482 flow [2023-09-01 00:30:06,942 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 219 transitions, 482 flow [2023-09-01 00:30:06,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 219 transitions, 482 flow [2023-09-01 00:30:07,020 INFO L130 PetriNetUnfolder]: 96/668 cut-off events. [2023-09-01 00:30:07,020 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:30:07,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 668 events. 96/668 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2725 event pairs, 6 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 455. Up to 32 conditions per place. [2023-09-01 00:30:07,047 INFO L119 LiptonReduction]: Number of co-enabled transitions 23632 [2023-09-01 00:30:10,149 INFO L134 LiptonReduction]: Checked pairs total: 62137 [2023-09-01 00:30:10,149 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-09-01 00:30:10,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:10,152 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:10,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:10,164 INFO L130 PetriNetUnfolder]: 34/165 cut-off events. [2023-09-01 00:30:10,164 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 00:30:10,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:10,164 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:30:10,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:10,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash -424570937, now seen corresponding path program 1 times [2023-09-01 00:30:10,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:10,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189352499] [2023-09-01 00:30:10,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:10,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:10,210 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:10,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:10,250 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:10,250 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:10,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:30:10,251 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:10,251 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:10,251 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:10,251 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:30:10,281 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:30:10,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 249 transitions, 558 flow [2023-09-01 00:30:10,434 INFO L130 PetriNetUnfolder]: 158/1073 cut-off events. [2023-09-01 00:30:10,434 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:30:10,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 1073 events. 158/1073 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5216 event pairs, 23 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 713. Up to 80 conditions per place. [2023-09-01 00:30:10,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 249 transitions, 558 flow [2023-09-01 00:30:10,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 249 transitions, 558 flow [2023-09-01 00:30:10,456 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:10,456 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 249 transitions, 558 flow [2023-09-01 00:30:10,457 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 249 transitions, 558 flow [2023-09-01 00:30:10,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 249 transitions, 558 flow [2023-09-01 00:30:10,594 INFO L130 PetriNetUnfolder]: 158/1073 cut-off events. [2023-09-01 00:30:10,594 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:30:10,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 1073 events. 158/1073 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5216 event pairs, 23 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 713. Up to 80 conditions per place. [2023-09-01 00:30:10,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 33880 [2023-09-01 00:30:13,820 INFO L134 LiptonReduction]: Checked pairs total: 103475 [2023-09-01 00:30:13,820 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-09-01 00:30:13,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:13,823 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:13,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:13,841 INFO L130 PetriNetUnfolder]: 52/236 cut-off events. [2023-09-01 00:30:13,841 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 00:30:13,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:13,841 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:30:13,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:13,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1644408959, now seen corresponding path program 1 times [2023-09-01 00:30:13,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:13,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396562712] [2023-09-01 00:30:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:13,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:13,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:13,883 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:13,884 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:13,884 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:13,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:30:13,884 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:13,885 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:13,885 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:13,885 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:30:13,906 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:30:13,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 279 transitions, 636 flow [2023-09-01 00:30:14,226 INFO L130 PetriNetUnfolder]: 284/1830 cut-off events. [2023-09-01 00:30:14,226 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:30:14,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 1830 events. 284/1830 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10966 event pairs, 72 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 1172. Up to 192 conditions per place. [2023-09-01 00:30:14,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 279 transitions, 636 flow [2023-09-01 00:30:14,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 279 transitions, 636 flow [2023-09-01 00:30:14,297 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:14,298 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 279 transitions, 636 flow [2023-09-01 00:30:14,298 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 279 transitions, 636 flow [2023-09-01 00:30:14,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 279 transitions, 636 flow [2023-09-01 00:30:14,613 INFO L130 PetriNetUnfolder]: 284/1830 cut-off events. [2023-09-01 00:30:14,613 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:30:14,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 1830 events. 284/1830 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10966 event pairs, 72 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 1172. Up to 192 conditions per place. [2023-09-01 00:30:14,687 INFO L119 LiptonReduction]: Number of co-enabled transitions 45864 [2023-09-01 00:30:17,877 INFO L134 LiptonReduction]: Checked pairs total: 145655 [2023-09-01 00:30:17,878 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-09-01 00:30:17,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:17,880 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:17,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:17,907 INFO L130 PetriNetUnfolder]: 69/313 cut-off events. [2023-09-01 00:30:17,907 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 00:30:17,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:17,908 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:30:17,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:17,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:17,908 INFO L85 PathProgramCache]: Analyzing trace with hash 410513783, now seen corresponding path program 1 times [2023-09-01 00:30:17,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:17,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536834284] [2023-09-01 00:30:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:17,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:17,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:17,949 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:17,949 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:17,950 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:17,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:30:17,950 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:17,951 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:17,951 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:17,951 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:30:17,972 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:30:17,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 309 transitions, 716 flow [2023-09-01 00:30:18,540 INFO L130 PetriNetUnfolder]: 554/3307 cut-off events. [2023-09-01 00:30:18,541 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:30:18,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3805 conditions, 3307 events. 554/3307 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 24154 event pairs, 201 based on Foata normal form. 0/2537 useless extension candidates. Maximal degree in co-relation 2048. Up to 448 conditions per place. [2023-09-01 00:30:18,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 309 transitions, 716 flow [2023-09-01 00:30:18,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 309 transitions, 716 flow [2023-09-01 00:30:18,643 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:18,643 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 309 transitions, 716 flow [2023-09-01 00:30:18,643 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 309 transitions, 716 flow [2023-09-01 00:30:18,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 309 transitions, 716 flow [2023-09-01 00:30:19,234 INFO L130 PetriNetUnfolder]: 554/3307 cut-off events. [2023-09-01 00:30:19,234 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:30:19,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3805 conditions, 3307 events. 554/3307 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 24154 event pairs, 201 based on Foata normal form. 0/2537 useless extension candidates. Maximal degree in co-relation 2048. Up to 448 conditions per place. [2023-09-01 00:30:19,377 INFO L119 LiptonReduction]: Number of co-enabled transitions 59584 [2023-09-01 00:30:22,563 INFO L134 LiptonReduction]: Checked pairs total: 174494 [2023-09-01 00:30:22,563 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-09-01 00:30:22,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:22,565 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:22,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:22,604 INFO L130 PetriNetUnfolder]: 91/414 cut-off events. [2023-09-01 00:30:22,605 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 00:30:22,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:22,605 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:30:22,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:22,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:22,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1209015053, now seen corresponding path program 1 times [2023-09-01 00:30:22,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:22,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443024499] [2023-09-01 00:30:22,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:22,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:22,631 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:22,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:22,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:22,656 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:22,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:30:22,657 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:22,657 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:22,657 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:22,658 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:30:22,683 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:30:22,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 339 transitions, 798 flow [2023-09-01 00:30:23,785 INFO L130 PetriNetUnfolder]: 1144/6256 cut-off events. [2023-09-01 00:30:23,785 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:30:23,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7341 conditions, 6256 events. 1144/6256 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 54314 event pairs, 522 based on Foata normal form. 0/4829 useless extension candidates. Maximal degree in co-relation 3789. Up to 1024 conditions per place. [2023-09-01 00:30:23,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 339 transitions, 798 flow [2023-09-01 00:30:23,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 339 transitions, 798 flow [2023-09-01 00:30:23,895 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:23,896 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 339 transitions, 798 flow [2023-09-01 00:30:23,896 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 339 transitions, 798 flow [2023-09-01 00:30:23,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 339 transitions, 798 flow [2023-09-01 00:30:24,917 INFO L130 PetriNetUnfolder]: 1144/6256 cut-off events. [2023-09-01 00:30:24,918 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:30:24,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7341 conditions, 6256 events. 1144/6256 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 54314 event pairs, 522 based on Foata normal form. 0/4829 useless extension candidates. Maximal degree in co-relation 3789. Up to 1024 conditions per place. [2023-09-01 00:30:25,152 INFO L119 LiptonReduction]: Number of co-enabled transitions 75040 [2023-09-01 00:30:28,597 INFO L134 LiptonReduction]: Checked pairs total: 245876 [2023-09-01 00:30:28,598 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-09-01 00:30:28,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:28,600 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:28,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:28,645 INFO L130 PetriNetUnfolder]: 114/536 cut-off events. [2023-09-01 00:30:28,645 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 00:30:28,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:28,646 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:30:28,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:28,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash -399184097, now seen corresponding path program 1 times [2023-09-01 00:30:28,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:28,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36277473] [2023-09-01 00:30:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:28,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:28,676 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:28,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:28,701 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:28,701 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:28,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:30:28,701 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:28,702 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:28,702 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:28,702 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:30:28,728 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:30:28,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 369 transitions, 882 flow [2023-09-01 00:30:31,008 INFO L130 PetriNetUnfolder]: 2438/12213 cut-off events. [2023-09-01 00:30:31,008 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:30:31,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14590 conditions, 12213 events. 2438/12213 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 123200 event pairs, 1291 based on Foata normal form. 0/9489 useless extension candidates. Maximal degree in co-relation 7323. Up to 2304 conditions per place. [2023-09-01 00:30:31,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 369 transitions, 882 flow [2023-09-01 00:30:31,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 369 transitions, 882 flow [2023-09-01 00:30:31,329 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:31,329 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 317 places, 369 transitions, 882 flow [2023-09-01 00:30:31,329 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 317 places, 369 transitions, 882 flow [2023-09-01 00:30:31,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 369 transitions, 882 flow [2023-09-01 00:30:33,408 INFO L130 PetriNetUnfolder]: 2438/12213 cut-off events. [2023-09-01 00:30:33,408 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:30:33,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14590 conditions, 12213 events. 2438/12213 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 123200 event pairs, 1291 based on Foata normal form. 0/9489 useless extension candidates. Maximal degree in co-relation 7323. Up to 2304 conditions per place. [2023-09-01 00:30:34,040 INFO L119 LiptonReduction]: Number of co-enabled transitions 92232 [2023-09-01 00:30:37,478 INFO L134 LiptonReduction]: Checked pairs total: 277391 [2023-09-01 00:30:37,478 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-09-01 00:30:37,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:37,480 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:37,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:37,549 INFO L130 PetriNetUnfolder]: 169/751 cut-off events. [2023-09-01 00:30:37,549 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 00:30:37,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:37,549 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:30:37,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:37,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:37,550 INFO L85 PathProgramCache]: Analyzing trace with hash -178548922, now seen corresponding path program 1 times [2023-09-01 00:30:37,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:37,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87586208] [2023-09-01 00:30:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:37,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:37,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:37,594 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:37,594 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:37,594 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:37,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:30:37,595 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:37,595 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:37,596 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:37,596 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:30:37,621 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:30:37,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 399 transitions, 968 flow [2023-09-01 00:30:42,498 INFO L130 PetriNetUnfolder]: 5268/24314 cut-off events. [2023-09-01 00:30:42,499 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:30:42,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29520 conditions, 24314 events. 5268/24314 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 278901 event pairs, 3084 based on Foata normal form. 0/19013 useless extension candidates. Maximal degree in co-relation 14570. Up to 5120 conditions per place. [2023-09-01 00:30:42,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 342 places, 399 transitions, 968 flow [2023-09-01 00:30:42,931 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 399 transitions, 968 flow [2023-09-01 00:30:42,931 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:42,932 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 399 transitions, 968 flow [2023-09-01 00:30:42,932 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 399 transitions, 968 flow [2023-09-01 00:30:42,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 399 transitions, 968 flow [2023-09-01 00:30:47,758 INFO L130 PetriNetUnfolder]: 5268/24314 cut-off events. [2023-09-01 00:30:47,758 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:30:48,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29520 conditions, 24314 events. 5268/24314 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 278901 event pairs, 3084 based on Foata normal form. 0/19013 useless extension candidates. Maximal degree in co-relation 14570. Up to 5120 conditions per place. [2023-09-01 00:30:48,917 INFO L119 LiptonReduction]: Number of co-enabled transitions 111160 [2023-09-01 00:30:52,653 INFO L134 LiptonReduction]: Checked pairs total: 335048 [2023-09-01 00:30:52,653 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-09-01 00:30:52,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:52,655 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:52,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:52,750 INFO L130 PetriNetUnfolder]: 245/1049 cut-off events. [2023-09-01 00:30:52,750 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 00:30:52,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:52,751 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:30:52,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:52,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash 6322263, now seen corresponding path program 1 times [2023-09-01 00:30:52,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:52,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524249809] [2023-09-01 00:30:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:52,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:52,779 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:52,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:52,803 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:52,803 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:52,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:30:52,803 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:52,804 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:52,804 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:52,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:30:52,835 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:30:52,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 429 transitions, 1056 flow [2023-09-01 00:31:03,813 INFO L130 PetriNetUnfolder]: 11426/48959 cut-off events. [2023-09-01 00:31:03,813 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:31:04,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60323 conditions, 48959 events. 11426/48959 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 629128 event pairs, 7181 based on Foata normal form. 0/38521 useless extension candidates. Maximal degree in co-relation 29498. Up to 11264 conditions per place. [2023-09-01 00:31:04,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 429 transitions, 1056 flow [2023-09-01 00:31:05,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 429 transitions, 1056 flow [2023-09-01 00:31:05,171 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:31:05,171 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 367 places, 429 transitions, 1056 flow [2023-09-01 00:31:05,171 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 367 places, 429 transitions, 1056 flow [2023-09-01 00:31:05,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 429 transitions, 1056 flow [2023-09-01 00:31:16,239 INFO L130 PetriNetUnfolder]: 11426/48959 cut-off events. [2023-09-01 00:31:16,240 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:31:17,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60323 conditions, 48959 events. 11426/48959 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 629128 event pairs, 7181 based on Foata normal form. 0/38521 useless extension candidates. Maximal degree in co-relation 29498. Up to 11264 conditions per place. [2023-09-01 00:31:19,284 INFO L119 LiptonReduction]: Number of co-enabled transitions 131824 [2023-09-01 00:31:22,848 INFO L134 LiptonReduction]: Checked pairs total: 404738 [2023-09-01 00:31:22,849 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-09-01 00:31:22,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:31:22,850 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:31:22,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:31:22,979 INFO L130 PetriNetUnfolder]: 372/1504 cut-off events. [2023-09-01 00:31:22,980 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 00:31:22,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:31:22,980 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:31:22,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:31:22,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:31:22,980 INFO L85 PathProgramCache]: Analyzing trace with hash -108943501, now seen corresponding path program 1 times [2023-09-01 00:31:22,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:31:22,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794740981] [2023-09-01 00:31:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:31:22,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:31:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:23,005 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:31:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:23,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:31:23,029 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:31:23,029 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:31:23,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:31:23,029 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:31:23,030 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:31:23,030 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:31:23,030 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:31:23,059 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:31:23,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 459 transitions, 1146 flow [2023-09-01 00:31:47,172 INFO L130 PetriNetUnfolder]: 24752/99204 cut-off events. [2023-09-01 00:31:47,173 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:31:50,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123895 conditions, 99204 events. 24752/99204 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2187. Compared 1391982 event pairs, 16398 based on Foata normal form. 0/78509 useless extension candidates. Maximal degree in co-relation 60299. Up to 24576 conditions per place. [2023-09-01 00:31:50,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 392 places, 459 transitions, 1146 flow [2023-09-01 00:31:52,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 392 places, 459 transitions, 1146 flow [2023-09-01 00:31:52,345 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:31:52,345 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 392 places, 459 transitions, 1146 flow [2023-09-01 00:31:52,346 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 392 places, 459 transitions, 1146 flow [2023-09-01 00:31:52,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 459 transitions, 1146 flow [2023-09-01 00:32:17,659 INFO L130 PetriNetUnfolder]: 24752/99204 cut-off events. [2023-09-01 00:32:17,659 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:32:20,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123895 conditions, 99204 events. 24752/99204 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2187. Compared 1391982 event pairs, 16398 based on Foata normal form. 0/78509 useless extension candidates. Maximal degree in co-relation 60299. Up to 24576 conditions per place. [2023-09-01 00:32:29,017 INFO L119 LiptonReduction]: Number of co-enabled transitions 154224 [2023-09-01 00:32:32,596 INFO L134 LiptonReduction]: Checked pairs total: 526324 [2023-09-01 00:32:32,596 INFO L136 LiptonReduction]: Total number of compositions: 273 [2023-09-01 00:32:32,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:32:32,597 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:32:32,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:32:32,796 INFO L130 PetriNetUnfolder]: 585/2206 cut-off events. [2023-09-01 00:32:32,797 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 00:32:32,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:32:32,797 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 00:32:32,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:32:32,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:32:32,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1917743853, now seen corresponding path program 1 times [2023-09-01 00:32:32,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:32:32,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035574846] [2023-09-01 00:32:32,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:32:32,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:32:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:32:32,824 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:32:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:32:32,852 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:32:32,852 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:32:32,853 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:32:32,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:32:32,853 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:32:32,856 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:32:32,856 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:32:32,856 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:32:32,892 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:32:32,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 417 places, 489 transitions, 1238 flow [2023-09-01 00:33:32,757 INFO L130 PetriNetUnfolder]: 53438/201673 cut-off events. [2023-09-01 00:33:32,757 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:33:42,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255052 conditions, 201673 events. 53438/201673 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4205. Compared 3073061 event pairs, 36879 based on Foata normal form. 0/160481 useless extension candidates. Maximal degree in co-relation 123869. Up to 53248 conditions per place. [2023-09-01 00:33:42,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 417 places, 489 transitions, 1238 flow [2023-09-01 00:33:46,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 417 places, 489 transitions, 1238 flow [2023-09-01 00:33:46,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:33:46,492 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 417 places, 489 transitions, 1238 flow [2023-09-01 00:33:46,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 417 places, 489 transitions, 1238 flow [2023-09-01 00:33:46,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 417 places, 489 transitions, 1238 flow [2023-09-01 00:34:42,332 INFO L130 PetriNetUnfolder]: 53438/201673 cut-off events. [2023-09-01 00:34:42,332 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:34:49,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255052 conditions, 201673 events. 53438/201673 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4205. Compared 3073061 event pairs, 36879 based on Foata normal form. 0/160481 useless extension candidates. Maximal degree in co-relation 123869. Up to 53248 conditions per place. [2023-09-01 00:35:15,474 INFO L119 LiptonReduction]: Number of co-enabled transitions 178360 [2023-09-01 00:35:20,314 INFO L134 LiptonReduction]: Checked pairs total: 613148 [2023-09-01 00:35:20,315 INFO L136 LiptonReduction]: Total number of compositions: 291 [2023-09-01 00:35:20,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:35:20,317 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3dfec0bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:35:20,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:35:20,766 INFO L130 PetriNetUnfolder]: 927/3268 cut-off events. [2023-09-01 00:35:20,766 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 00:35:20,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:35:20,766 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 00:35:20,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:35:20,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:35:20,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1913101223, now seen corresponding path program 1 times [2023-09-01 00:35:20,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:35:20,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606277832] [2023-09-01 00:35:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:35:20,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:35:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:20,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:35:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:20,839 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:35:20,840 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:35:20,840 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:35:20,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 00:35:20,840 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:35:20,841 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:35:20,841 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:35:20,842 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 00:35:20,879 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 00:35:20,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 442 places, 519 transitions, 1332 flow