./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_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_10-ptrmunge_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 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 --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 00:32:47,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:32:47,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:32:47,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:32:47,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:32:47,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:32:47,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:32:47,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:32:47,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:32:47,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:32:47,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:32:47,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:32:47,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:32:47,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:32:47,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:32:47,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:32:47,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:32:47,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:32:47,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:32:47,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:32:47,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:32:47,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:32:47,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:32:47,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:32:48,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:32:48,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:32:48,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:32:48,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:32:48,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:32:48,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:32:48,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:32:48,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:32:48,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:32:48,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:32:48,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:32:48,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:32:48,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:32:48,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:32:48,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:32:48,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:32:48,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:32:48,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:32:48,047 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:32:48,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:32:48,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:32:48,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:32:48,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:32:48,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:32:48,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:32:48,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:32:48,051 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:32:48,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:32:48,052 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:32:48,052 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:32:48,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:32:48,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:32:48,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:32:48,053 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:32:48,053 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:32:48,053 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:32:48,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:32:48,053 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:32:48,054 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:32:48,054 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:32:48,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:32:48,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:32:48,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:32:48,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:32:48,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:32:48,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:32:48,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:32:48,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:32:48,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:32:48,055 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:32:48,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:32:48,056 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:32:48,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:32:48,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:32:48,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:32:48,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:32:48,353 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:32:48,353 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:32:48,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-09-01 00:32:49,514 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:32:49,762 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:32:49,766 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-09-01 00:32:49,777 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc0f1c49/a1142b1b8cf24cd1aaec86ab50bf08a3/FLAGc97c1f92f [2023-09-01 00:32:49,788 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc0f1c49/a1142b1b8cf24cd1aaec86ab50bf08a3 [2023-09-01 00:32:49,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:32:49,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:32:49,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:32:49,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:32:49,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:32:49,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:32:49" (1/1) ... [2023-09-01 00:32:49,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb3a226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:49, skipping insertion in model container [2023-09-01 00:32:49,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:32:49" (1/1) ... [2023-09-01 00:32:49,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:32:49,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:32:50,087 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_10-ptrmunge_racefree.i[30176,30189] [2023-09-01 00:32:50,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:32:50,145 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:32:50,187 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_10-ptrmunge_racefree.i[30176,30189] [2023-09-01 00:32:50,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:32:50,256 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:32:50,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50 WrapperNode [2023-09-01 00:32:50,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:32:50,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:32:50,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:32:50,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:32:50,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50" (1/1) ... [2023-09-01 00:32:50,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50" (1/1) ... [2023-09-01 00:32:50,347 INFO L138 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 220 [2023-09-01 00:32:50,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:32:50,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:32:50,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:32:50,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:32:50,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50" (1/1) ... [2023-09-01 00:32:50,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50" (1/1) ... [2023-09-01 00:32:50,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50" (1/1) ... [2023-09-01 00:32:50,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50" (1/1) ... [2023-09-01 00:32:50,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50" (1/1) ... [2023-09-01 00:32:50,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50" (1/1) ... [2023-09-01 00:32:50,398 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50" (1/1) ... [2023-09-01 00:32:50,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50" (1/1) ... [2023-09-01 00:32:50,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:32:50,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:32:50,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:32:50,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:32:50,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50" (1/1) ... [2023-09-01 00:32:50,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:32:50,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:32:50,445 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 00:32:50,460 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 00:32:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:32:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 00:32:50,488 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 00:32:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:32:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:32:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:32:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:32:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 00:32:50,490 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 00:32:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:32:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:32:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:32:50,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:32:50,492 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 00:32:50,648 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:32:50,650 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:32:51,002 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:32:51,010 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:32:51,041 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-09-01 00:32:51,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:32:51 BoogieIcfgContainer [2023-09-01 00:32:51,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:32:51,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:32:51,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:32:51,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:32:51,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:32:49" (1/3) ... [2023-09-01 00:32:51,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1699ba69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:32:51, skipping insertion in model container [2023-09-01 00:32:51,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:32:50" (2/3) ... [2023-09-01 00:32:51,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1699ba69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:32:51, skipping insertion in model container [2023-09-01 00:32:51,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:32:51" (3/3) ... [2023-09-01 00:32:51,053 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2023-09-01 00:32:51,070 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:32:51,070 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-09-01 00:32:51,070 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:32:51,219 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:32:51,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 249 transitions, 520 flow [2023-09-01 00:32:51,442 INFO L130 PetriNetUnfolder]: 58/453 cut-off events. [2023-09-01 00:32:51,443 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-09-01 00:32:51,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 453 events. 58/453 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2220 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2023-09-01 00:32:51,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 249 transitions, 520 flow [2023-09-01 00:32:51,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 249 transitions, 520 flow [2023-09-01 00:32:51,469 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:32:51,485 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 249 transitions, 520 flow [2023-09-01 00:32:51,488 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 249 transitions, 520 flow [2023-09-01 00:32:51,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 249 transitions, 520 flow [2023-09-01 00:32:51,576 INFO L130 PetriNetUnfolder]: 58/453 cut-off events. [2023-09-01 00:32:51,576 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-09-01 00:32:51,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 453 events. 58/453 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2220 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2023-09-01 00:32:51,593 INFO L119 LiptonReduction]: Number of co-enabled transitions 26128 [2023-09-01 00:32:56,882 INFO L134 LiptonReduction]: Checked pairs total: 59529 [2023-09-01 00:32:56,882 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-09-01 00:32:56,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:32:56,899 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;@72acd736, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:32:56,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:32:56,907 INFO L130 PetriNetUnfolder]: 2/45 cut-off events. [2023-09-01 00:32:56,907 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:32:56,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:32:56,908 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:32:56,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:32:56,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:32:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash -554006590, now seen corresponding path program 1 times [2023-09-01 00:32:56,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:32:56,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614171972] [2023-09-01 00:32:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:32:56,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:32:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:32:57,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:32:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:32:57,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:32:57,138 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:32:57,139 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:32:57,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:32:57,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:32:57,142 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:32:57,145 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:32:57,146 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:32:57,147 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:32:57,228 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:32:57,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 397 transitions, 842 flow [2023-09-01 00:32:57,541 INFO L130 PetriNetUnfolder]: 197/1322 cut-off events. [2023-09-01 00:32:57,542 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-09-01 00:32:57,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 1322 events. 197/1322 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8758 event pairs, 1 based on Foata normal form. 0/946 useless extension candidates. Maximal degree in co-relation 796. Up to 32 conditions per place. [2023-09-01 00:32:57,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 346 places, 397 transitions, 842 flow [2023-09-01 00:32:57,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 346 places, 397 transitions, 842 flow [2023-09-01 00:32:57,579 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:32:57,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 346 places, 397 transitions, 842 flow [2023-09-01 00:32:57,579 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 346 places, 397 transitions, 842 flow [2023-09-01 00:32:57,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 397 transitions, 842 flow [2023-09-01 00:32:57,865 INFO L130 PetriNetUnfolder]: 197/1322 cut-off events. [2023-09-01 00:32:57,865 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-09-01 00:32:57,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 1322 events. 197/1322 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8758 event pairs, 1 based on Foata normal form. 0/946 useless extension candidates. Maximal degree in co-relation 796. Up to 32 conditions per place. [2023-09-01 00:32:57,934 INFO L119 LiptonReduction]: Number of co-enabled transitions 95424 [2023-09-01 00:33:04,583 INFO L134 LiptonReduction]: Checked pairs total: 272987 [2023-09-01 00:33:04,584 INFO L136 LiptonReduction]: Total number of compositions: 303 [2023-09-01 00:33:04,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:33:04,587 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;@72acd736, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:33:04,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:33:04,603 INFO L130 PetriNetUnfolder]: 37/198 cut-off events. [2023-09-01 00:33:04,604 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 00:33:04,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:33:04,604 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:33:04,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:33:04,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:33:04,605 INFO L85 PathProgramCache]: Analyzing trace with hash -26706354, now seen corresponding path program 1 times [2023-09-01 00:33:04,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:33:04,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127281371] [2023-09-01 00:33:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:33:04,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:33:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:04,631 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:33:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:04,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:33:04,654 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:33:04,655 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:33:04,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:33:04,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:33:04,655 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:33:04,656 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:33:04,656 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:33:04,656 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:33:04,718 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:33:04,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 545 transitions, 1168 flow [2023-09-01 00:33:05,839 INFO L130 PetriNetUnfolder]: 664/3743 cut-off events. [2023-09-01 00:33:05,839 INFO L131 PetriNetUnfolder]: For 419/435 co-relation queries the response was YES. [2023-09-01 00:33:05,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 3743 events. 664/3743 cut-off events. For 419/435 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 30081 event pairs, 52 based on Foata normal form. 0/2742 useless extension candidates. Maximal degree in co-relation 2372. Up to 192 conditions per place. [2023-09-01 00:33:05,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 470 places, 545 transitions, 1168 flow [2023-09-01 00:33:06,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 470 places, 545 transitions, 1168 flow [2023-09-01 00:33:06,049 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:33:06,050 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 470 places, 545 transitions, 1168 flow [2023-09-01 00:33:06,050 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 470 places, 545 transitions, 1168 flow [2023-09-01 00:33:06,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 545 transitions, 1168 flow [2023-09-01 00:33:07,457 INFO L130 PetriNetUnfolder]: 664/3743 cut-off events. [2023-09-01 00:33:07,457 INFO L131 PetriNetUnfolder]: For 419/435 co-relation queries the response was YES. [2023-09-01 00:33:07,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 3743 events. 664/3743 cut-off events. For 419/435 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 30081 event pairs, 52 based on Foata normal form. 0/2742 useless extension candidates. Maximal degree in co-relation 2372. Up to 192 conditions per place. [2023-09-01 00:33:07,884 INFO L119 LiptonReduction]: Number of co-enabled transitions 207888 [2023-09-01 00:33:15,471 INFO L134 LiptonReduction]: Checked pairs total: 559709 [2023-09-01 00:33:15,472 INFO L136 LiptonReduction]: Total number of compositions: 411 [2023-09-01 00:33:15,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:33:15,474 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;@72acd736, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:33:15,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:33:15,505 INFO L130 PetriNetUnfolder]: 81/401 cut-off events. [2023-09-01 00:33:15,505 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-09-01 00:33:15,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:33:15,505 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:33:15,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:33:15,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:33:15,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1463892330, now seen corresponding path program 1 times [2023-09-01 00:33:15,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:33:15,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796386360] [2023-09-01 00:33:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:33:15,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:33:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:15,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:33:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:15,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:33:15,592 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:33:15,593 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:33:15,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:33:15,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:33:15,594 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:33:15,594 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:33:15,594 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:33:15,595 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:33:15,660 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 00:33:15,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 594 places, 693 transitions, 1498 flow [2023-09-01 00:33:19,857 INFO L130 PetriNetUnfolder]: 2647/12144 cut-off events. [2023-09-01 00:33:19,858 INFO L131 PetriNetUnfolder]: For 2144/2174 co-relation queries the response was YES. [2023-09-01 00:33:20,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14309 conditions, 12144 events. 2647/12144 cut-off events. For 2144/2174 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 119109 event pairs, 626 based on Foata normal form. 0/9168 useless extension candidates. Maximal degree in co-relation 7559. Up to 1024 conditions per place. [2023-09-01 00:33:20,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 594 places, 693 transitions, 1498 flow [2023-09-01 00:33:20,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 594 places, 693 transitions, 1498 flow [2023-09-01 00:33:20,373 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:33:20,373 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 594 places, 693 transitions, 1498 flow [2023-09-01 00:33:20,374 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 594 places, 693 transitions, 1498 flow [2023-09-01 00:33:20,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 594 places, 693 transitions, 1498 flow [2023-09-01 00:33:24,342 INFO L130 PetriNetUnfolder]: 2647/12144 cut-off events. [2023-09-01 00:33:24,342 INFO L131 PetriNetUnfolder]: For 2144/2174 co-relation queries the response was YES. [2023-09-01 00:33:24,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14309 conditions, 12144 events. 2647/12144 cut-off events. For 2144/2174 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 119109 event pairs, 626 based on Foata normal form. 0/9168 useless extension candidates. Maximal degree in co-relation 7559. Up to 1024 conditions per place. [2023-09-01 00:33:25,535 INFO L119 LiptonReduction]: Number of co-enabled transitions 363520 [2023-09-01 00:33:34,343 INFO L134 LiptonReduction]: Checked pairs total: 1102337 [2023-09-01 00:33:34,343 INFO L136 LiptonReduction]: Total number of compositions: 519 [2023-09-01 00:33:34,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:33:34,346 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;@72acd736, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:33:34,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:33:34,401 INFO L130 PetriNetUnfolder]: 126/629 cut-off events. [2023-09-01 00:33:34,401 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-09-01 00:33:34,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:33:34,402 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:33:34,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:33:34,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:33:34,402 INFO L85 PathProgramCache]: Analyzing trace with hash -353865525, now seen corresponding path program 1 times [2023-09-01 00:33:34,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:33:34,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107351289] [2023-09-01 00:33:34,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:33:34,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:33:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:34,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:33:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:34,449 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:33:34,449 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:33:34,449 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:33:34,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:33:34,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:33:34,450 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:33:34,451 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:33:34,451 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:33:34,451 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:33:34,521 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 00:33:34,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 718 places, 841 transitions, 1832 flow [2023-09-01 00:33:53,899 INFO L130 PetriNetUnfolder]: 11762/45101 cut-off events. [2023-09-01 00:33:53,900 INFO L131 PetriNetUnfolder]: For 10450/10486 co-relation queries the response was YES. [2023-09-01 00:33:55,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55527 conditions, 45101 events. 11762/45101 cut-off events. For 10450/10486 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 535057 event pairs, 4296 based on Foata normal form. 0/34912 useless extension candidates. Maximal degree in co-relation 27816. Up to 5120 conditions per place. [2023-09-01 00:33:55,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 718 places, 841 transitions, 1832 flow [2023-09-01 00:33:57,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 718 places, 841 transitions, 1832 flow [2023-09-01 00:33:57,340 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:33:57,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 718 places, 841 transitions, 1832 flow [2023-09-01 00:33:57,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 718 places, 841 transitions, 1832 flow [2023-09-01 00:33:57,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 718 places, 841 transitions, 1832 flow [2023-09-01 00:34:16,748 INFO L130 PetriNetUnfolder]: 11762/45101 cut-off events. [2023-09-01 00:34:16,748 INFO L131 PetriNetUnfolder]: For 10450/10486 co-relation queries the response was YES. [2023-09-01 00:34:18,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55527 conditions, 45101 events. 11762/45101 cut-off events. For 10450/10486 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 535057 event pairs, 4296 based on Foata normal form. 0/34912 useless extension candidates. Maximal degree in co-relation 27816. Up to 5120 conditions per place. [2023-09-01 00:34:23,726 INFO L119 LiptonReduction]: Number of co-enabled transitions 562320 [2023-09-01 00:34:33,890 INFO L134 LiptonReduction]: Checked pairs total: 1730753 [2023-09-01 00:34:33,890 INFO L136 LiptonReduction]: Total number of compositions: 632 [2023-09-01 00:34:33,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:33,903 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;@72acd736, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:33,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:34:34,029 INFO L130 PetriNetUnfolder]: 248/1143 cut-off events. [2023-09-01 00:34:34,029 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-09-01 00:34:34,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:34,029 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:34,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:34,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash 86256822, now seen corresponding path program 1 times [2023-09-01 00:34:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:34,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701041149] [2023-09-01 00:34:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:34,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:34,074 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:34,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:34,097 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:34,098 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:34:34,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:34:34,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:34:34,098 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:34,099 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:34:34,099 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:34,099 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:34:34,195 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 00:34:34,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 842 places, 989 transitions, 2170 flow [2023-09-01 00:36:27,508 INFO L130 PetriNetUnfolder]: 53929/180374 cut-off events. [2023-09-01 00:36:27,510 INFO L131 PetriNetUnfolder]: For 49552/49615 co-relation queries the response was YES. [2023-09-01 00:36:42,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229803 conditions, 180374 events. 53929/180374 cut-off events. For 49552/49615 co-relation queries the response was YES. Maximal size of possible extension queue 2473. Compared 2522134 event pairs, 24930 based on Foata normal form. 0/142182 useless extension candidates. Maximal degree in co-relation 112394. Up to 24576 conditions per place. [2023-09-01 00:36:42,977 INFO L82 GeneralOperation]: Start removeDead. Operand has 842 places, 989 transitions, 2170 flow