./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-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 ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 02:55:10,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:55:10,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:55:10,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:55:10,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:55:10,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:55:11,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:55:11,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:55:11,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:55:11,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:55:11,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:55:11,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:55:11,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:55:11,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:55:11,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:55:11,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:55:11,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:55:11,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:55:11,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:55:11,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:55:11,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:55:11,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:55:11,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:55:11,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:55:11,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:55:11,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:55:11,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:55:11,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:55:11,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:55:11,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:55:11,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:55:11,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:55:11,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:55:11,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:55:11,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:55:11,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:55:11,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:55:11,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:55:11,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:55:11,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:55:11,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:55:11,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:55:11,088 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:55:11,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:55:11,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:55:11,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:55:11,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:55:11,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:55:11,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:55:11,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:55:11,092 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:55:11,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:55:11,093 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:55:11,093 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:55:11,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:55:11,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:55:11,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:55:11,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:55:11,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:55:11,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:55:11,094 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:55:11,094 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:55:11,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:55:11,095 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:55:11,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:55:11,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:55:11,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:55:11,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:55:11,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:55:11,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:55:11,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:55:11,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:55:11,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:55:11,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:55:11,101 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:55:11,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:55:11,101 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:55:11,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:55:11,102 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:55:11,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:55:11,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:55:11,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:55:11,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:55:11,468 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:55:11,468 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:55:11,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-29 02:55:12,589 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:55:12,864 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:55:12,865 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-29 02:55:12,879 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f49d727a8/1b84be7e61ba415492f857b638a9f530/FLAGfaa522cb6 [2023-08-29 02:55:12,895 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f49d727a8/1b84be7e61ba415492f857b638a9f530 [2023-08-29 02:55:12,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:55:12,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:55:12,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:55:12,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:55:12,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:55:12,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:55:12" (1/1) ... [2023-08-29 02:55:12,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c130ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:12, skipping insertion in model container [2023-08-29 02:55:12,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:55:12" (1/1) ... [2023-08-29 02:55:12,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:55:12,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:55:13,246 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_60-invariant_racefree.i[30176,30189] [2023-08-29 02:55:13,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:55:13,300 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:55:13,326 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_60-invariant_racefree.i[30176,30189] [2023-08-29 02:55:13,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:55:13,392 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:55:13,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13 WrapperNode [2023-08-29 02:55:13,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:55:13,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:55:13,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:55:13,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:55:13,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13" (1/1) ... [2023-08-29 02:55:13,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13" (1/1) ... [2023-08-29 02:55:13,442 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 176 [2023-08-29 02:55:13,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:55:13,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:55:13,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:55:13,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:55:13,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13" (1/1) ... [2023-08-29 02:55:13,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13" (1/1) ... [2023-08-29 02:55:13,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13" (1/1) ... [2023-08-29 02:55:13,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13" (1/1) ... [2023-08-29 02:55:13,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13" (1/1) ... [2023-08-29 02:55:13,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13" (1/1) ... [2023-08-29 02:55:13,479 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13" (1/1) ... [2023-08-29 02:55:13,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13" (1/1) ... [2023-08-29 02:55:13,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:55:13,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:55:13,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:55:13,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:55:13,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13" (1/1) ... [2023-08-29 02:55:13,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:55:13,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:55:13,553 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) [2023-08-29 02:55:13,557 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 [2023-08-29 02:55:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:55:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:55:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:55:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:55:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:55:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 02:55:13,587 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 02:55:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:55:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:55:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:55:13,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:55:13,589 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 02:55:13,718 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:55:13,724 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:55:14,041 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:55:14,049 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:55:14,049 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-29 02:55:14,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:55:14 BoogieIcfgContainer [2023-08-29 02:55:14,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:55:14,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:55:14,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:55:14,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:55:14,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:55:12" (1/3) ... [2023-08-29 02:55:14,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5493ffce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:55:14, skipping insertion in model container [2023-08-29 02:55:14,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:13" (2/3) ... [2023-08-29 02:55:14,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5493ffce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:55:14, skipping insertion in model container [2023-08-29 02:55:14,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:55:14" (3/3) ... [2023-08-29 02:55:14,062 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-08-29 02:55:14,070 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:55:14,079 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:55:14,079 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-29 02:55:14,079 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:55:14,176 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 02:55:14,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 183 transitions, 374 flow [2023-08-29 02:55:14,341 INFO L130 PetriNetUnfolder]: 33/262 cut-off events. [2023-08-29 02:55:14,342 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:55:14,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 262 events. 33/262 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1080 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 150. Up to 6 conditions per place. [2023-08-29 02:55:14,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 183 transitions, 374 flow [2023-08-29 02:55:14,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 183 transitions, 374 flow [2023-08-29 02:55:14,366 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:14,387 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 183 transitions, 374 flow [2023-08-29 02:55:14,392 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 183 transitions, 374 flow [2023-08-29 02:55:14,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 183 transitions, 374 flow [2023-08-29 02:55:14,444 INFO L130 PetriNetUnfolder]: 33/262 cut-off events. [2023-08-29 02:55:14,445 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:55:14,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 262 events. 33/262 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1080 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 150. Up to 6 conditions per place. [2023-08-29 02:55:14,457 INFO L119 LiptonReduction]: Number of co-enabled transitions 11220 [2023-08-29 02:55:17,232 INFO L134 LiptonReduction]: Checked pairs total: 43517 [2023-08-29 02:55:17,233 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-29 02:55:17,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:55:17,251 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d9a4232, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:17,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-29 02:55:17,256 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-29 02:55:17,256 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:17,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:17,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 02:55:17,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:55:17,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:17,262 INFO L85 PathProgramCache]: Analyzing trace with hash 633986868, now seen corresponding path program 1 times [2023-08-29 02:55:17,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:17,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947115560] [2023-08-29 02:55:17,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:17,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:17,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:17,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947115560] [2023-08-29 02:55:17,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947115560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:17,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:17,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:17,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523503391] [2023-08-29 02:55:17,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:17,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:17,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:17,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:17,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:17,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 296 [2023-08-29 02:55:17,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 94 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:17,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:17,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 296 [2023-08-29 02:55:17,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:17,716 INFO L130 PetriNetUnfolder]: 271/853 cut-off events. [2023-08-29 02:55:17,716 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:55:17,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 853 events. 271/853 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5079 event pairs, 0 based on Foata normal form. 96/841 useless extension candidates. Maximal degree in co-relation 1386. Up to 545 conditions per place. [2023-08-29 02:55:17,721 INFO L137 encePairwiseOnDemand]: 275/296 looper letters, 49 selfloop transitions, 2 changer transitions 2/92 dead transitions. [2023-08-29 02:55:17,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 92 transitions, 298 flow [2023-08-29 02:55:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:17,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2023-08-29 02:55:17,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6137387387387387 [2023-08-29 02:55:17,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2023-08-29 02:55:17,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2023-08-29 02:55:17,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:17,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2023-08-29 02:55:17,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:17,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:17,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:17,749 INFO L175 Difference]: Start difference. First operand has 78 places, 94 transitions, 196 flow. Second operand 3 states and 545 transitions. [2023-08-29 02:55:17,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 92 transitions, 298 flow [2023-08-29 02:55:17,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:55:17,755 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 161 flow [2023-08-29 02:55:17,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2023-08-29 02:55:17,759 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2023-08-29 02:55:17,760 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 161 flow [2023-08-29 02:55:17,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:17,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:17,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 02:55:17,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:55:17,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:55:17,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:17,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1829340500, now seen corresponding path program 1 times [2023-08-29 02:55:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:17,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991140240] [2023-08-29 02:55:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:17,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:17,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:17,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991140240] [2023-08-29 02:55:17,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991140240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:17,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:17,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:17,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562195332] [2023-08-29 02:55:17,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:17,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:17,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:17,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:17,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:17,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 296 [2023-08-29 02:55:17,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:17,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:17,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 296 [2023-08-29 02:55:17,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:18,093 INFO L130 PetriNetUnfolder]: 682/1797 cut-off events. [2023-08-29 02:55:18,094 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-29 02:55:18,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3335 conditions, 1797 events. 682/1797 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 11215 event pairs, 260 based on Foata normal form. 0/1656 useless extension candidates. Maximal degree in co-relation 3319. Up to 901 conditions per place. [2023-08-29 02:55:18,101 INFO L137 encePairwiseOnDemand]: 271/296 looper letters, 79 selfloop transitions, 18 changer transitions 0/118 dead transitions. [2023-08-29 02:55:18,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 118 transitions, 448 flow [2023-08-29 02:55:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:18,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:18,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-29 02:55:18,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698198198198198 [2023-08-29 02:55:18,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-29 02:55:18,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-29 02:55:18,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:18,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-29 02:55:18,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:18,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:18,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:18,108 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 161 flow. Second operand 3 states and 506 transitions. [2023-08-29 02:55:18,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 118 transitions, 448 flow [2023-08-29 02:55:18,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 118 transitions, 442 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:18,111 INFO L231 Difference]: Finished difference. Result has 81 places, 92 transitions, 315 flow [2023-08-29 02:55:18,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=81, PETRI_TRANSITIONS=92} [2023-08-29 02:55:18,112 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2023-08-29 02:55:18,113 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 92 transitions, 315 flow [2023-08-29 02:55:18,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:18,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:18,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:18,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 02:55:18,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:55:18,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:18,114 INFO L85 PathProgramCache]: Analyzing trace with hash 945053396, now seen corresponding path program 1 times [2023-08-29 02:55:18,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:18,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365124612] [2023-08-29 02:55:18,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:18,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:18,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:18,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365124612] [2023-08-29 02:55:18,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365124612] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:55:18,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234146171] [2023-08-29 02:55:18,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:18,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:18,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:55:18,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:55:18,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 02:55:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:18,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:55:18,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:55:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:55:18,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:55:18,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234146171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:18,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:55:18,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:55:18,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795418103] [2023-08-29 02:55:18,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:18,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:18,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:18,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:18,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:55:18,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 296 [2023-08-29 02:55:18,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 92 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:18,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:18,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 296 [2023-08-29 02:55:18,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:18,623 INFO L130 PetriNetUnfolder]: 579/1649 cut-off events. [2023-08-29 02:55:18,623 INFO L131 PetriNetUnfolder]: For 687/689 co-relation queries the response was YES. [2023-08-29 02:55:18,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 1649 events. 579/1649 cut-off events. For 687/689 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 10598 event pairs, 363 based on Foata normal form. 0/1494 useless extension candidates. Maximal degree in co-relation 3641. Up to 1098 conditions per place. [2023-08-29 02:55:18,633 INFO L137 encePairwiseOnDemand]: 286/296 looper letters, 60 selfloop transitions, 14 changer transitions 0/115 dead transitions. [2023-08-29 02:55:18,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 115 transitions, 541 flow [2023-08-29 02:55:18,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:18,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:18,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-08-29 02:55:18,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5506756756756757 [2023-08-29 02:55:18,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-08-29 02:55:18,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-08-29 02:55:18,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:18,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-08-29 02:55:18,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:18,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:18,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:18,640 INFO L175 Difference]: Start difference. First operand has 81 places, 92 transitions, 315 flow. Second operand 3 states and 489 transitions. [2023-08-29 02:55:18,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 115 transitions, 541 flow [2023-08-29 02:55:18,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 115 transitions, 493 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:18,647 INFO L231 Difference]: Finished difference. Result has 83 places, 104 transitions, 405 flow [2023-08-29 02:55:18,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=83, PETRI_TRANSITIONS=104} [2023-08-29 02:55:18,648 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2023-08-29 02:55:18,648 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 104 transitions, 405 flow [2023-08-29 02:55:18,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:18,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:18,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:18,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 02:55:18,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:18,855 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:55:18,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:18,856 INFO L85 PathProgramCache]: Analyzing trace with hash 802975325, now seen corresponding path program 1 times [2023-08-29 02:55:18,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:18,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879173539] [2023-08-29 02:55:18,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:18,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:18,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:18,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879173539] [2023-08-29 02:55:18,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879173539] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:18,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:18,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 02:55:18,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901604043] [2023-08-29 02:55:18,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:18,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:18,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:18,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:18,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:18,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 296 [2023-08-29 02:55:18,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 104 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:18,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:18,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 296 [2023-08-29 02:55:18,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:19,211 INFO L130 PetriNetUnfolder]: 531/1621 cut-off events. [2023-08-29 02:55:19,212 INFO L131 PetriNetUnfolder]: For 754/793 co-relation queries the response was YES. [2023-08-29 02:55:19,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 1621 events. 531/1621 cut-off events. For 754/793 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11081 event pairs, 215 based on Foata normal form. 15/1476 useless extension candidates. Maximal degree in co-relation 3607. Up to 838 conditions per place. [2023-08-29 02:55:19,220 INFO L137 encePairwiseOnDemand]: 285/296 looper letters, 77 selfloop transitions, 12 changer transitions 2/141 dead transitions. [2023-08-29 02:55:19,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 141 transitions, 706 flow [2023-08-29 02:55:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-08-29 02:55:19,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5754504504504504 [2023-08-29 02:55:19,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-08-29 02:55:19,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-08-29 02:55:19,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:19,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-08-29 02:55:19,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,226 INFO L175 Difference]: Start difference. First operand has 83 places, 104 transitions, 405 flow. Second operand 3 states and 511 transitions. [2023-08-29 02:55:19,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 141 transitions, 706 flow [2023-08-29 02:55:19,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 141 transitions, 664 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:19,232 INFO L231 Difference]: Finished difference. Result has 84 places, 109 transitions, 423 flow [2023-08-29 02:55:19,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=423, PETRI_PLACES=84, PETRI_TRANSITIONS=109} [2023-08-29 02:55:19,233 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2023-08-29 02:55:19,233 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 109 transitions, 423 flow [2023-08-29 02:55:19,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:19,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:19,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 02:55:19,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:55:19,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1954213252, now seen corresponding path program 1 times [2023-08-29 02:55:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:19,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400089787] [2023-08-29 02:55:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:19,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:19,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:19,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400089787] [2023-08-29 02:55:19,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400089787] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:19,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:19,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:19,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047835891] [2023-08-29 02:55:19,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:19,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:19,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:19,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:19,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:19,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 296 [2023-08-29 02:55:19,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 109 transitions, 423 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:19,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 296 [2023-08-29 02:55:19,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:19,466 INFO L130 PetriNetUnfolder]: 480/1441 cut-off events. [2023-08-29 02:55:19,466 INFO L131 PetriNetUnfolder]: For 362/367 co-relation queries the response was YES. [2023-08-29 02:55:19,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3372 conditions, 1441 events. 480/1441 cut-off events. For 362/367 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 9557 event pairs, 257 based on Foata normal form. 0/1270 useless extension candidates. Maximal degree in co-relation 3354. Up to 811 conditions per place. [2023-08-29 02:55:19,473 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 67 selfloop transitions, 4 changer transitions 5/117 dead transitions. [2023-08-29 02:55:19,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 572 flow [2023-08-29 02:55:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:19,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:19,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-29 02:55:19,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822072072072072 [2023-08-29 02:55:19,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-29 02:55:19,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-29 02:55:19,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:19,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-29 02:55:19,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,479 INFO L175 Difference]: Start difference. First operand has 84 places, 109 transitions, 423 flow. Second operand 3 states and 517 transitions. [2023-08-29 02:55:19,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 572 flow [2023-08-29 02:55:19,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 533 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-29 02:55:19,484 INFO L231 Difference]: Finished difference. Result has 83 places, 95 transitions, 333 flow [2023-08-29 02:55:19,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=83, PETRI_TRANSITIONS=95} [2023-08-29 02:55:19,485 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2023-08-29 02:55:19,485 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 95 transitions, 333 flow [2023-08-29 02:55:19,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:19,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:19,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 02:55:19,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:55:19,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:19,486 INFO L85 PathProgramCache]: Analyzing trace with hash 880784294, now seen corresponding path program 1 times [2023-08-29 02:55:19,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:19,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828810142] [2023-08-29 02:55:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:19,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:19,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:19,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828810142] [2023-08-29 02:55:19,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828810142] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:55:19,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29785329] [2023-08-29 02:55:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:19,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:19,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:55:19,557 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:55:19,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 02:55:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:19,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:55:19,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:55:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:55:19,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:55:19,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29785329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:19,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:55:19,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:55:19,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156877365] [2023-08-29 02:55:19,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:19,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:19,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:19,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:19,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:55:19,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 296 [2023-08-29 02:55:19,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 95 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:19,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 296 [2023-08-29 02:55:19,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:19,847 INFO L130 PetriNetUnfolder]: 504/1459 cut-off events. [2023-08-29 02:55:19,847 INFO L131 PetriNetUnfolder]: For 378/397 co-relation queries the response was YES. [2023-08-29 02:55:19,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3454 conditions, 1459 events. 504/1459 cut-off events. For 378/397 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9476 event pairs, 281 based on Foata normal form. 1/1330 useless extension candidates. Maximal degree in co-relation 3436. Up to 962 conditions per place. [2023-08-29 02:55:19,854 INFO L137 encePairwiseOnDemand]: 286/296 looper letters, 56 selfloop transitions, 15 changer transitions 10/119 dead transitions. [2023-08-29 02:55:19,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 573 flow [2023-08-29 02:55:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:19,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-08-29 02:55:19,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5506756756756757 [2023-08-29 02:55:19,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-08-29 02:55:19,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-08-29 02:55:19,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:19,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-08-29 02:55:19,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,861 INFO L175 Difference]: Start difference. First operand has 83 places, 95 transitions, 333 flow. Second operand 3 states and 489 transitions. [2023-08-29 02:55:19,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 573 flow [2023-08-29 02:55:19,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 119 transitions, 565 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:19,864 INFO L231 Difference]: Finished difference. Result has 84 places, 102 transitions, 437 flow [2023-08-29 02:55:19,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=437, PETRI_PLACES=84, PETRI_TRANSITIONS=102} [2023-08-29 02:55:19,865 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2023-08-29 02:55:19,865 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 102 transitions, 437 flow [2023-08-29 02:55:19,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:19,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:19,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:19,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-29 02:55:20,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-29 02:55:20,072 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:55:20,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:20,072 INFO L85 PathProgramCache]: Analyzing trace with hash -267658096, now seen corresponding path program 1 times [2023-08-29 02:55:20,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:20,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185571088] [2023-08-29 02:55:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:20,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:20,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:20,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185571088] [2023-08-29 02:55:20,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185571088] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:55:20,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7213146] [2023-08-29 02:55:20,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:20,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:20,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:55:20,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:55:20,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 02:55:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:20,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:55:20,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:55:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:20,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:55:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:20,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7213146] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:55:20,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:55:20,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:55:20,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696919597] [2023-08-29 02:55:20,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:55:20,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:55:20,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:55:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:55:20,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 296 [2023-08-29 02:55:20,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 102 transitions, 437 flow. Second operand has 7 states, 7 states have (on average 157.14285714285714) internal successors, (1100), 7 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:20,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:20,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 296 [2023-08-29 02:55:20,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:20,344 INFO L130 PetriNetUnfolder]: 4/16 cut-off events. [2023-08-29 02:55:20,344 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-29 02:55:20,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 16 events. 4/16 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 47. Up to 10 conditions per place. [2023-08-29 02:55:20,344 INFO L137 encePairwiseOnDemand]: 293/296 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-29 02:55:20,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 10 transitions, 59 flow [2023-08-29 02:55:20,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:55:20,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:55:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 626 transitions. [2023-08-29 02:55:20,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287162162162162 [2023-08-29 02:55:20,347 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 626 transitions. [2023-08-29 02:55:20,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 626 transitions. [2023-08-29 02:55:20,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:20,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 626 transitions. [2023-08-29 02:55:20,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:20,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:20,361 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:20,362 INFO L175 Difference]: Start difference. First operand has 84 places, 102 transitions, 437 flow. Second operand 4 states and 626 transitions. [2023-08-29 02:55:20,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 10 transitions, 59 flow [2023-08-29 02:55:20,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 10 transitions, 44 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-29 02:55:20,362 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-08-29 02:55:20,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-08-29 02:55:20,363 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -62 predicate places. [2023-08-29 02:55:20,363 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-08-29 02:55:20,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 157.14285714285714) internal successors, (1100), 7 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:20,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 18 remaining) [2023-08-29 02:55:20,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2023-08-29 02:55:20,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2023-08-29 02:55:20,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2023-08-29 02:55:20,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2023-08-29 02:55:20,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2023-08-29 02:55:20,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2023-08-29 02:55:20,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2023-08-29 02:55:20,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2023-08-29 02:55:20,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2023-08-29 02:55:20,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2023-08-29 02:55:20,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2023-08-29 02:55:20,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2023-08-29 02:55:20,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2023-08-29 02:55:20,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2023-08-29 02:55:20,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2023-08-29 02:55:20,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2023-08-29 02:55:20,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2023-08-29 02:55:20,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 02:55:20,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:20,569 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:20,571 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:55:20,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 183 transitions, 374 flow [2023-08-29 02:55:20,596 INFO L130 PetriNetUnfolder]: 33/262 cut-off events. [2023-08-29 02:55:20,597 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:55:20,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 262 events. 33/262 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1080 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 150. Up to 6 conditions per place. [2023-08-29 02:55:20,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 183 transitions, 374 flow [2023-08-29 02:55:20,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 178 transitions, 361 flow [2023-08-29 02:55:20,599 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:20,600 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 178 transitions, 361 flow [2023-08-29 02:55:20,600 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 178 transitions, 361 flow [2023-08-29 02:55:20,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 178 transitions, 361 flow [2023-08-29 02:55:20,619 INFO L130 PetriNetUnfolder]: 32/257 cut-off events. [2023-08-29 02:55:20,619 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:20,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 257 events. 32/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1062 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 150. Up to 6 conditions per place. [2023-08-29 02:55:20,624 INFO L119 LiptonReduction]: Number of co-enabled transitions 11220 [2023-08-29 02:55:23,028 INFO L134 LiptonReduction]: Checked pairs total: 43387 [2023-08-29 02:55:23,028 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-29 02:55:23,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:55:23,030 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d9a4232, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:23,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:55:23,033 INFO L130 PetriNetUnfolder]: 2/26 cut-off events. [2023-08-29 02:55:23,033 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:23,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:23,033 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 02:55:23,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:55:23,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1420724920, now seen corresponding path program 1 times [2023-08-29 02:55:23,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:23,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452620532] [2023-08-29 02:55:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:23,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:55:23,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:55:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:55:23,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:55:23,068 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:55:23,069 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:55:23,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 02:55:23,069 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:55:23,070 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:55:23,070 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:55:23,070 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:55:23,093 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 02:55:23,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 251 transitions, 520 flow [2023-08-29 02:55:23,146 INFO L130 PetriNetUnfolder]: 57/439 cut-off events. [2023-08-29 02:55:23,147 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:23,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 439 events. 57/439 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2030 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 264. Up to 9 conditions per place. [2023-08-29 02:55:23,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 251 transitions, 520 flow [2023-08-29 02:55:23,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 251 transitions, 520 flow [2023-08-29 02:55:23,154 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:23,154 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 251 transitions, 520 flow [2023-08-29 02:55:23,154 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 251 transitions, 520 flow [2023-08-29 02:55:23,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 251 transitions, 520 flow [2023-08-29 02:55:23,193 INFO L130 PetriNetUnfolder]: 57/439 cut-off events. [2023-08-29 02:55:23,193 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:23,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 439 events. 57/439 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2030 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 264. Up to 9 conditions per place. [2023-08-29 02:55:23,216 INFO L119 LiptonReduction]: Number of co-enabled transitions 32604 [2023-08-29 02:55:25,760 INFO L134 LiptonReduction]: Checked pairs total: 138886 [2023-08-29 02:55:25,760 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-29 02:55:25,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:55:25,762 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d9a4232, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:25,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-29 02:55:25,764 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-08-29 02:55:25,764 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:25,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:25,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 02:55:25,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:55:25,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:25,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1178592861, now seen corresponding path program 1 times [2023-08-29 02:55:25,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:25,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685683148] [2023-08-29 02:55:25,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:25,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:25,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:25,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685683148] [2023-08-29 02:55:25,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685683148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:25,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:25,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:25,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701134645] [2023-08-29 02:55:25,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:25,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:25,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:25,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:25,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:25,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 393 [2023-08-29 02:55:25,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 146 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:25,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:25,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 393 [2023-08-29 02:55:25,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:27,198 INFO L130 PetriNetUnfolder]: 8126/16149 cut-off events. [2023-08-29 02:55:27,198 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2023-08-29 02:55:27,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28708 conditions, 16149 events. 8126/16149 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 145069 event pairs, 7220 based on Foata normal form. 3358/17444 useless extension candidates. Maximal degree in co-relation 11406. Up to 12446 conditions per place. [2023-08-29 02:55:27,336 INFO L137 encePairwiseOnDemand]: 362/393 looper letters, 67 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2023-08-29 02:55:27,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 133 transitions, 422 flow [2023-08-29 02:55:27,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:27,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2023-08-29 02:55:27,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276505513146734 [2023-08-29 02:55:27,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2023-08-29 02:55:27,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2023-08-29 02:55:27,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:27,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2023-08-29 02:55:27,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:27,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:27,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:27,350 INFO L175 Difference]: Start difference. First operand has 120 places, 146 transitions, 310 flow. Second operand 3 states and 740 transitions. [2023-08-29 02:55:27,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 133 transitions, 422 flow [2023-08-29 02:55:27,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 133 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:55:27,354 INFO L231 Difference]: Finished difference. Result has 121 places, 118 transitions, 264 flow [2023-08-29 02:55:27,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=121, PETRI_TRANSITIONS=118} [2023-08-29 02:55:27,355 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2023-08-29 02:55:27,355 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 118 transitions, 264 flow [2023-08-29 02:55:27,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:27,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:27,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 02:55:27,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 02:55:27,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:55:27,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:27,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2105024375, now seen corresponding path program 1 times [2023-08-29 02:55:27,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:27,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625921195] [2023-08-29 02:55:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:27,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:27,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:27,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625921195] [2023-08-29 02:55:27,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625921195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:27,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:27,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:27,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005980848] [2023-08-29 02:55:27,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:27,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:27,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:27,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:27,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:27,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 393 [2023-08-29 02:55:27,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 118 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:27,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:27,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 393 [2023-08-29 02:55:27,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:32,234 INFO L130 PetriNetUnfolder]: 42593/76982 cut-off events. [2023-08-29 02:55:32,235 INFO L131 PetriNetUnfolder]: For 1637/1637 co-relation queries the response was YES. [2023-08-29 02:55:32,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145899 conditions, 76982 events. 42593/76982 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 1555. Compared 722820 event pairs, 17140 based on Foata normal form. 0/69666 useless extension candidates. Maximal degree in co-relation 145741. Up to 41491 conditions per place. [2023-08-29 02:55:32,702 INFO L137 encePairwiseOnDemand]: 354/393 looper letters, 125 selfloop transitions, 28 changer transitions 0/188 dead transitions. [2023-08-29 02:55:32,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 188 transitions, 728 flow [2023-08-29 02:55:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:32,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 690 transitions. [2023-08-29 02:55:32,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5852417302798982 [2023-08-29 02:55:32,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 690 transitions. [2023-08-29 02:55:32,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 690 transitions. [2023-08-29 02:55:32,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:32,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 690 transitions. [2023-08-29 02:55:32,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:32,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:32,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:32,711 INFO L175 Difference]: Start difference. First operand has 121 places, 118 transitions, 264 flow. Second operand 3 states and 690 transitions. [2023-08-29 02:55:32,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 188 transitions, 728 flow [2023-08-29 02:55:32,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 188 transitions, 725 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:55:32,717 INFO L231 Difference]: Finished difference. Result has 124 places, 146 transitions, 508 flow [2023-08-29 02:55:32,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=124, PETRI_TRANSITIONS=146} [2023-08-29 02:55:32,718 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 4 predicate places. [2023-08-29 02:55:32,718 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 146 transitions, 508 flow [2023-08-29 02:55:32,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:32,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:32,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:32,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 02:55:32,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:55:32,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1878390425, now seen corresponding path program 1 times [2023-08-29 02:55:32,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:32,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559990630] [2023-08-29 02:55:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:32,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:32,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:32,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559990630] [2023-08-29 02:55:32,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559990630] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:55:32,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559997853] [2023-08-29 02:55:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:32,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:32,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:55:32,769 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:55:32,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 02:55:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:32,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:55:32,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:55:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:55:32,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:55:32,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559997853] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:32,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:55:32,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:55:32,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766038743] [2023-08-29 02:55:32,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:32,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:32,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:32,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:32,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:55:32,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 393 [2023-08-29 02:55:32,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 146 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:32,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:32,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 393 [2023-08-29 02:55:32,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:37,340 INFO L130 PetriNetUnfolder]: 35476/68287 cut-off events. [2023-08-29 02:55:37,340 INFO L131 PetriNetUnfolder]: For 34383/35133 co-relation queries the response was YES. [2023-08-29 02:55:37,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158514 conditions, 68287 events. 35476/68287 cut-off events. For 34383/35133 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 682780 event pairs, 22355 based on Foata normal form. 8/60472 useless extension candidates. Maximal degree in co-relation 71966. Up to 49931 conditions per place. [2023-08-29 02:55:37,737 INFO L137 encePairwiseOnDemand]: 377/393 looper letters, 99 selfloop transitions, 28 changer transitions 0/194 dead transitions. [2023-08-29 02:55:37,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 194 transitions, 930 flow [2023-08-29 02:55:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 677 transitions. [2023-08-29 02:55:37,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5742154368108566 [2023-08-29 02:55:37,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 677 transitions. [2023-08-29 02:55:37,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 677 transitions. [2023-08-29 02:55:37,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:37,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 677 transitions. [2023-08-29 02:55:37,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:37,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:37,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:37,746 INFO L175 Difference]: Start difference. First operand has 124 places, 146 transitions, 508 flow. Second operand 3 states and 677 transitions. [2023-08-29 02:55:37,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 194 transitions, 930 flow [2023-08-29 02:55:37,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 194 transitions, 850 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:37,834 INFO L231 Difference]: Finished difference. Result has 126 places, 172 transitions, 718 flow [2023-08-29 02:55:37,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=718, PETRI_PLACES=126, PETRI_TRANSITIONS=172} [2023-08-29 02:55:37,835 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 6 predicate places. [2023-08-29 02:55:37,835 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 172 transitions, 718 flow [2023-08-29 02:55:37,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:37,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:37,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:37,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 02:55:38,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:38,037 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:55:38,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:38,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2103530639, now seen corresponding path program 1 times [2023-08-29 02:55:38,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:38,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191513471] [2023-08-29 02:55:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:38,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:38,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:38,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191513471] [2023-08-29 02:55:38,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191513471] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:55:38,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360800524] [2023-08-29 02:55:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:38,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:38,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:55:38,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:55:38,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 02:55:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:38,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:55:38,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:55:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:38,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:55:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:38,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360800524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:55:38,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:55:38,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:55:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316534517] [2023-08-29 02:55:38,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:55:38,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:55:38,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:38,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:55:38,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:55:38,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 393 [2023-08-29 02:55:38,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 172 transitions, 718 flow. Second operand has 7 states, 7 states have (on average 212.57142857142858) internal successors, (1488), 7 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:38,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:38,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 393 [2023-08-29 02:55:38,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:38,700 INFO L130 PetriNetUnfolder]: 2211/4951 cut-off events. [2023-08-29 02:55:38,700 INFO L131 PetriNetUnfolder]: For 3181/3313 co-relation queries the response was YES. [2023-08-29 02:55:38,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11577 conditions, 4951 events. 2211/4951 cut-off events. For 3181/3313 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 39636 event pairs, 551 based on Foata normal form. 473/4980 useless extension candidates. Maximal degree in co-relation 11569. Up to 2604 conditions per place. [2023-08-29 02:55:38,716 INFO L137 encePairwiseOnDemand]: 390/393 looper letters, 91 selfloop transitions, 3 changer transitions 0/153 dead transitions. [2023-08-29 02:55:38,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 153 transitions, 724 flow [2023-08-29 02:55:38,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 02:55:38,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 02:55:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1132 transitions. [2023-08-29 02:55:38,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760814249363868 [2023-08-29 02:55:38,720 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1132 transitions. [2023-08-29 02:55:38,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1132 transitions. [2023-08-29 02:55:38,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:38,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1132 transitions. [2023-08-29 02:55:38,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 226.4) internal successors, (1132), 5 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:38,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 393.0) internal successors, (2358), 6 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:38,726 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 393.0) internal successors, (2358), 6 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:38,727 INFO L175 Difference]: Start difference. First operand has 126 places, 172 transitions, 718 flow. Second operand 5 states and 1132 transitions. [2023-08-29 02:55:38,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 153 transitions, 724 flow [2023-08-29 02:55:38,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 153 transitions, 640 flow, removed 42 selfloop flow, removed 1 redundant places. [2023-08-29 02:55:38,733 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 320 flow [2023-08-29 02:55:38,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2023-08-29 02:55:38,733 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -28 predicate places. [2023-08-29 02:55:38,733 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 320 flow [2023-08-29 02:55:38,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 212.57142857142858) internal successors, (1488), 7 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:38,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:38,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:38,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-29 02:55:38,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-29 02:55:38,939 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:55:38,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1410762942, now seen corresponding path program 1 times [2023-08-29 02:55:38,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:38,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558285209] [2023-08-29 02:55:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:38,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:38,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:38,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558285209] [2023-08-29 02:55:38,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558285209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:38,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:38,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:38,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944906647] [2023-08-29 02:55:38,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:38,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:38,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:38,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:38,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:39,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 393 [2023-08-29 02:55:39,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:39,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:39,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 393 [2023-08-29 02:55:39,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:39,072 INFO L130 PetriNetUnfolder]: 294/621 cut-off events. [2023-08-29 02:55:39,072 INFO L131 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2023-08-29 02:55:39,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 621 events. 294/621 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3176 event pairs, 282 based on Foata normal form. 0/605 useless extension candidates. Maximal degree in co-relation 1448. Up to 476 conditions per place. [2023-08-29 02:55:39,074 INFO L137 encePairwiseOnDemand]: 389/393 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-29 02:55:39,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 30 transitions, 140 flow [2023-08-29 02:55:39,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:39,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:39,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-29 02:55:39,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536047497879559 [2023-08-29 02:55:39,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-29 02:55:39,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-29 02:55:39,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:39,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-29 02:55:39,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:39,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:39,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:39,081 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 320 flow. Second operand 3 states and 632 transitions. [2023-08-29 02:55:39,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 30 transitions, 140 flow [2023-08-29 02:55:39,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 133 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-29 02:55:39,082 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-29 02:55:39,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-29 02:55:39,083 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -80 predicate places. [2023-08-29 02:55:39,083 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-29 02:55:39,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (23 of 24 remaining) [2023-08-29 02:55:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2023-08-29 02:55:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2023-08-29 02:55:39,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2023-08-29 02:55:39,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2023-08-29 02:55:39,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2023-08-29 02:55:39,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2023-08-29 02:55:39,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2023-08-29 02:55:39,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2023-08-29 02:55:39,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2023-08-29 02:55:39,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2023-08-29 02:55:39,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2023-08-29 02:55:39,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2023-08-29 02:55:39,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2023-08-29 02:55:39,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2023-08-29 02:55:39,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2023-08-29 02:55:39,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2023-08-29 02:55:39,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2023-08-29 02:55:39,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2023-08-29 02:55:39,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2023-08-29 02:55:39,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2023-08-29 02:55:39,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2023-08-29 02:55:39,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2023-08-29 02:55:39,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2023-08-29 02:55:39,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 02:55:39,091 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-29 02:55:39,092 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:55:39,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 251 transitions, 520 flow [2023-08-29 02:55:39,139 INFO L130 PetriNetUnfolder]: 57/439 cut-off events. [2023-08-29 02:55:39,139 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:39,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 439 events. 57/439 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2030 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 264. Up to 9 conditions per place. [2023-08-29 02:55:39,144 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 251 transitions, 520 flow [2023-08-29 02:55:39,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 251 transitions, 520 flow [2023-08-29 02:55:39,147 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:39,147 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 251 transitions, 520 flow [2023-08-29 02:55:39,148 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 251 transitions, 520 flow [2023-08-29 02:55:39,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 251 transitions, 520 flow [2023-08-29 02:55:39,189 INFO L130 PetriNetUnfolder]: 57/439 cut-off events. [2023-08-29 02:55:39,189 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:39,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 439 events. 57/439 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2030 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 264. Up to 9 conditions per place. [2023-08-29 02:55:39,205 INFO L119 LiptonReduction]: Number of co-enabled transitions 32604 [2023-08-29 02:55:41,684 INFO L134 LiptonReduction]: Checked pairs total: 138490 [2023-08-29 02:55:41,685 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-29 02:55:41,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:55:41,687 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d9a4232, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:41,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:55:41,694 INFO L130 PetriNetUnfolder]: 13/103 cut-off events. [2023-08-29 02:55:41,694 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 02:55:41,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:41,694 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 02:55:41,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:55:41,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:41,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1623008874, now seen corresponding path program 1 times [2023-08-29 02:55:41,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:41,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490649892] [2023-08-29 02:55:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:41,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:55:41,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:55:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:55:41,722 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:55:41,722 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:55:41,723 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:55:41,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 02:55:41,723 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:55:41,724 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:55:41,724 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:55:41,724 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 02:55:41,750 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 02:55:41,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 319 transitions, 668 flow [2023-08-29 02:55:41,861 INFO L130 PetriNetUnfolder]: 86/659 cut-off events. [2023-08-29 02:55:41,861 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 02:55:41,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 659 events. 86/659 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3192 event pairs, 1 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 447. Up to 16 conditions per place. [2023-08-29 02:55:41,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 319 transitions, 668 flow [2023-08-29 02:55:41,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 319 transitions, 668 flow [2023-08-29 02:55:41,879 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:41,879 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 282 places, 319 transitions, 668 flow [2023-08-29 02:55:41,880 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 282 places, 319 transitions, 668 flow [2023-08-29 02:55:41,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 319 transitions, 668 flow [2023-08-29 02:55:41,974 INFO L130 PetriNetUnfolder]: 86/659 cut-off events. [2023-08-29 02:55:41,974 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 02:55:41,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 659 events. 86/659 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3192 event pairs, 1 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 447. Up to 16 conditions per place. [2023-08-29 02:55:42,088 INFO L119 LiptonReduction]: Number of co-enabled transitions 62568 [2023-08-29 02:55:44,592 INFO L134 LiptonReduction]: Checked pairs total: 282791 [2023-08-29 02:55:44,592 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-29 02:55:44,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:55:44,594 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d9a4232, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:44,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-29 02:55:44,596 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-08-29 02:55:44,596 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:44,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:44,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 02:55:44,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:55:44,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1848270247, now seen corresponding path program 1 times [2023-08-29 02:55:44,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:44,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127857121] [2023-08-29 02:55:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:44,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:44,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:44,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127857121] [2023-08-29 02:55:44,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127857121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:44,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:44,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:44,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93693052] [2023-08-29 02:55:44,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:44,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:44,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:44,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:44,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:44,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 492 [2023-08-29 02:55:44,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 194 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:44,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:44,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 492 [2023-08-29 02:55:44,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:56:05,994 INFO L130 PetriNetUnfolder]: 188951/303822 cut-off events. [2023-08-29 02:56:05,994 INFO L131 PetriNetUnfolder]: For 2306/2306 co-relation queries the response was YES. [2023-08-29 02:56:06,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560786 conditions, 303822 events. 188951/303822 cut-off events. For 2306/2306 co-relation queries the response was YES. Maximal size of possible extension queue 7117. Compared 3108147 event pairs, 170931 based on Foata normal form. 63491/336075 useless extension candidates. Maximal degree in co-relation 102145. Up to 255131 conditions per place. [2023-08-29 02:56:08,239 INFO L137 encePairwiseOnDemand]: 452/492 looper letters, 84 selfloop transitions, 2 changer transitions 0/171 dead transitions. [2023-08-29 02:56:08,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 171 transitions, 544 flow [2023-08-29 02:56:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:56:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:56:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 934 transitions. [2023-08-29 02:56:08,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6327913279132791 [2023-08-29 02:56:08,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 934 transitions. [2023-08-29 02:56:08,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 934 transitions. [2023-08-29 02:56:08,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:56:08,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 934 transitions. [2023-08-29 02:56:08,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:08,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 492.0) internal successors, (1968), 4 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:08,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 492.0) internal successors, (1968), 4 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:08,249 INFO L175 Difference]: Start difference. First operand has 159 places, 194 transitions, 418 flow. Second operand 3 states and 934 transitions. [2023-08-29 02:56:08,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 171 transitions, 544 flow [2023-08-29 02:56:08,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 171 transitions, 544 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:56:08,254 INFO L231 Difference]: Finished difference. Result has 159 places, 156 transitions, 352 flow [2023-08-29 02:56:08,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=492, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=159, PETRI_TRANSITIONS=156} [2023-08-29 02:56:08,255 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, 0 predicate places. [2023-08-29 02:56:08,255 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 156 transitions, 352 flow [2023-08-29 02:56:08,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:08,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:56:08,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 02:56:08,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 02:56:08,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:56:08,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:56:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1482623456, now seen corresponding path program 1 times [2023-08-29 02:56:08,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:56:08,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540444702] [2023-08-29 02:56:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:56:08,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:56:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:56:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:56:08,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:56:08,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540444702] [2023-08-29 02:56:08,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540444702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:56:08,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:56:08,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:56:08,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646441070] [2023-08-29 02:56:08,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:56:08,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:56:08,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:56:08,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:56:08,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:56:08,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 492 [2023-08-29 02:56:08,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 156 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:08,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:56:08,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 492 [2023-08-29 02:56:08,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand