./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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_79-equ_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 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:28:55,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:28:55,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:28:55,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:28:55,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:28:55,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:28:55,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:28:55,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:28:55,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:28:55,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:28:55,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:28:55,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:28:55,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:28:55,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:28:55,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:28:55,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:28:55,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:28:55,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:28:55,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:28:55,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:28:55,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:28:55,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:28:55,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:28:55,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:28:55,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:28:55,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:28:55,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:28:55,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:28:55,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:28:55,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:28:55,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:28:55,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:28:55,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:28:55,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:28:55,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:28:55,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:28:55,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:28:55,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:28:55,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:28:55,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:28:55,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:28:55,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:28:55,276 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:28:55,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:28:55,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:28:55,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:28:55,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:28:55,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:28:55,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:28:55,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:28:55,280 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:28:55,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:28:55,281 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:28:55,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:28:55,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:28:55,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:28:55,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:28:55,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:28:55,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:28:55,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:28:55,282 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:28:55,282 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:28:55,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:28:55,283 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:28:55,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:28:55,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:28:55,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:28:55,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:28:55,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:28:55,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:28:55,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:28:55,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:28:55,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:28:55,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:28:55,285 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:28:55,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:28:55,285 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:28:55,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:28:55,286 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:28:55,286 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:28:55,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:28:55,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:28:55,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:28:55,677 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:28:55,677 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:28:55,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-08-29 18:28:56,786 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:28:57,035 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:28:57,035 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-08-29 18:28:57,058 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/248ed69c7/48d99c61ad55487182b974b535db3861/FLAGd85221df4 [2023-08-29 18:28:57,073 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/248ed69c7/48d99c61ad55487182b974b535db3861 [2023-08-29 18:28:57,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:28:57,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:28:57,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:28:57,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:28:57,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:28:57,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c12d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57, skipping insertion in model container [2023-08-29 18:28:57,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:28:57,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:28:57,542 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_79-equ_racefree.i[47038,47051] [2023-08-29 18:28:57,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:28:57,614 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:28:57,687 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_79-equ_racefree.i[47038,47051] [2023-08-29 18:28:57,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:28:57,776 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:28:57,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57 WrapperNode [2023-08-29 18:28:57,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:28:57,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:28:57,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:28:57,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:28:57,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,865 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 267 [2023-08-29 18:28:57,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:28:57,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:28:57,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:28:57,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:28:57,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,928 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:28:57,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:28:57,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:28:57,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:28:57,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57" (1/1) ... [2023-08-29 18:28:57,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:28:57,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:57,975 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 18:28:57,996 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 18:28:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:28:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:28:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:28:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:28:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:28:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:28:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:28:58,014 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:28:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:28:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:28:58,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:28:58,016 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 18:28:58,230 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:28:58,232 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:28:58,661 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:28:58,669 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:28:58,669 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-08-29 18:28:58,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:28:58 BoogieIcfgContainer [2023-08-29 18:28:58,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:28:58,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:28:58,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:28:58,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:28:58,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:28:57" (1/3) ... [2023-08-29 18:28:58,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4772cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:28:58, skipping insertion in model container [2023-08-29 18:28:58,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:57" (2/3) ... [2023-08-29 18:28:58,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4772cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:28:58, skipping insertion in model container [2023-08-29 18:28:58,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:28:58" (3/3) ... [2023-08-29 18:28:58,677 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2023-08-29 18:28:58,686 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:28:58,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:28:58,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 18:28:58,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:28:58,806 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:28:58,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 273 transitions, 554 flow [2023-08-29 18:28:58,942 INFO L130 PetriNetUnfolder]: 43/382 cut-off events. [2023-08-29 18:28:58,942 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:28:58,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 382 events. 43/382 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1513 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-08-29 18:28:58,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 273 transitions, 554 flow [2023-08-29 18:28:58,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 271 transitions, 550 flow [2023-08-29 18:28:58,969 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:28:58,977 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 271 transitions, 550 flow [2023-08-29 18:28:58,980 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 271 transitions, 550 flow [2023-08-29 18:28:58,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 271 transitions, 550 flow [2023-08-29 18:28:59,058 INFO L130 PetriNetUnfolder]: 42/380 cut-off events. [2023-08-29 18:28:59,059 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:28:59,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 380 events. 42/380 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1539 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-08-29 18:28:59,073 INFO L119 LiptonReduction]: Number of co-enabled transitions 20700 [2023-08-29 18:29:06,081 INFO L134 LiptonReduction]: Checked pairs total: 113976 [2023-08-29 18:29:06,081 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-29 18:29:06,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:29:06,101 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;@175c008e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:29:06,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 18:29:06,108 INFO L130 PetriNetUnfolder]: 6/32 cut-off events. [2023-08-29 18:29:06,108 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:29:06,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:29:06,109 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 18:29:06,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:29:06,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:29:06,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2008979637, now seen corresponding path program 1 times [2023-08-29 18:29:06,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:29:06,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639189097] [2023-08-29 18:29:06,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:06,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:29:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:29:06,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:29:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:29:06,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:29:06,386 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:29:06,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-29 18:29:06,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-29 18:29:06,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-29 18:29:06,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-08-29 18:29:06,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-29 18:29:06,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-29 18:29:06,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-29 18:29:06,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-29 18:29:06,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-29 18:29:06,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-29 18:29:06,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-29 18:29:06,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-29 18:29:06,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-29 18:29:06,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-29 18:29:06,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-29 18:29:06,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-29 18:29:06,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-29 18:29:06,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:29:06,394 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 18:29:06,397 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:29:06,398 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:29:06,433 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:29:06,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 328 places, 365 transitions, 748 flow [2023-08-29 18:29:06,526 INFO L130 PetriNetUnfolder]: 72/613 cut-off events. [2023-08-29 18:29:06,527 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:29:06,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 613 events. 72/613 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3007 event pairs, 0 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 384. Up to 12 conditions per place. [2023-08-29 18:29:06,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 328 places, 365 transitions, 748 flow [2023-08-29 18:29:06,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 363 transitions, 744 flow [2023-08-29 18:29:06,542 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:29:06,542 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 327 places, 363 transitions, 744 flow [2023-08-29 18:29:06,543 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 327 places, 363 transitions, 744 flow [2023-08-29 18:29:06,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 363 transitions, 744 flow [2023-08-29 18:29:06,620 INFO L130 PetriNetUnfolder]: 71/611 cut-off events. [2023-08-29 18:29:06,621 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:29:06,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 611 events. 71/611 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3018 event pairs, 0 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 382. Up to 12 conditions per place. [2023-08-29 18:29:06,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 59580 [2023-08-29 18:29:13,810 INFO L134 LiptonReduction]: Checked pairs total: 333561 [2023-08-29 18:29:13,810 INFO L136 LiptonReduction]: Total number of compositions: 213 [2023-08-29 18:29:13,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:29:13,814 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;@175c008e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:29:13,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 18:29:13,821 INFO L130 PetriNetUnfolder]: 14/83 cut-off events. [2023-08-29 18:29:13,821 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:29:13,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:29:13,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:29:13,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:29:13,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:29:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1751455443, now seen corresponding path program 1 times [2023-08-29 18:29:13,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:29:13,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093413628] [2023-08-29 18:29:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:29:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:29:13,891 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 18:29:13,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:29:13,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093413628] [2023-08-29 18:29:13,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093413628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:29:13,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:29:13,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:29:13,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560474293] [2023-08-29 18:29:13,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:29:13,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:29:13,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:29:13,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:29:13,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:29:13,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 578 [2023-08-29 18:29:13,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 192 transitions, 402 flow. Second operand has 2 states, 2 states have (on average 325.0) internal successors, (650), 2 states have internal predecessors, (650), 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 18:29:13,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:29:13,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 578 [2023-08-29 18:29:13,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:29:17,122 INFO L130 PetriNetUnfolder]: 14723/34627 cut-off events. [2023-08-29 18:29:17,122 INFO L131 PetriNetUnfolder]: For 202/280 co-relation queries the response was YES. [2023-08-29 18:29:17,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55997 conditions, 34627 events. 14723/34627 cut-off events. For 202/280 co-relation queries the response was YES. Maximal size of possible extension queue 881. Compared 372961 event pairs, 13600 based on Foata normal form. 5770/37132 useless extension candidates. Maximal degree in co-relation 26692. Up to 21257 conditions per place. [2023-08-29 18:29:17,375 INFO L137 encePairwiseOnDemand]: 546/578 looper letters, 61 selfloop transitions, 0 changer transitions 0/160 dead transitions. [2023-08-29 18:29:17,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 160 transitions, 460 flow [2023-08-29 18:29:17,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:29:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:29:17,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 739 transitions. [2023-08-29 18:29:17,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.639273356401384 [2023-08-29 18:29:17,391 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 739 transitions. [2023-08-29 18:29:17,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 739 transitions. [2023-08-29 18:29:17,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:29:17,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 739 transitions. [2023-08-29 18:29:17,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 369.5) internal successors, (739), 2 states have internal predecessors, (739), 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 18:29:17,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 578.0) internal successors, (1734), 3 states have internal predecessors, (1734), 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 18:29:17,407 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 578.0) internal successors, (1734), 3 states have internal predecessors, (1734), 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 18:29:17,409 INFO L175 Difference]: Start difference. First operand has 160 places, 192 transitions, 402 flow. Second operand 2 states and 739 transitions. [2023-08-29 18:29:17,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 160 transitions, 460 flow [2023-08-29 18:29:17,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 160 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:29:17,416 INFO L231 Difference]: Finished difference. Result has 161 places, 160 transitions, 338 flow [2023-08-29 18:29:17,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=338, PETRI_PLACES=161, PETRI_TRANSITIONS=160} [2023-08-29 18:29:17,422 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2023-08-29 18:29:17,422 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 160 transitions, 338 flow [2023-08-29 18:29:17,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 325.0) internal successors, (650), 2 states have internal predecessors, (650), 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 18:29:17,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:29:17,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:29:17,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:29:17,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:29:17,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:29:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash 405451054, now seen corresponding path program 1 times [2023-08-29 18:29:17,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:29:17,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128397516] [2023-08-29 18:29:17,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:17,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:29:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:29:17,943 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 18:29:17,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:29:17,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128397516] [2023-08-29 18:29:17,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128397516] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:29:17,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:29:17,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 18:29:17,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879582733] [2023-08-29 18:29:17,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:29:17,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:29:17,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:29:17,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:29:17,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:29:18,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 578 [2023-08-29 18:29:18,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 160 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 277.5) internal successors, (1665), 6 states have internal predecessors, (1665), 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 18:29:18,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:29:18,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 578 [2023-08-29 18:29:18,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:29:26,783 INFO L130 PetriNetUnfolder]: 74589/132499 cut-off events. [2023-08-29 18:29:26,783 INFO L131 PetriNetUnfolder]: For 348/367 co-relation queries the response was YES. [2023-08-29 18:29:26,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244694 conditions, 132499 events. 74589/132499 cut-off events. For 348/367 co-relation queries the response was YES. Maximal size of possible extension queue 2839. Compared 1313189 event pairs, 36699 based on Foata normal form. 6/123444 useless extension candidates. Maximal degree in co-relation 244689. Up to 80779 conditions per place. [2023-08-29 18:29:27,661 INFO L137 encePairwiseOnDemand]: 542/578 looper letters, 227 selfloop transitions, 81 changer transitions 0/371 dead transitions. [2023-08-29 18:29:27,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 371 transitions, 1382 flow [2023-08-29 18:29:27,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:29:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:29:27,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1967 transitions. [2023-08-29 18:29:27,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671856978085352 [2023-08-29 18:29:27,668 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1967 transitions. [2023-08-29 18:29:27,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1967 transitions. [2023-08-29 18:29:27,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:29:27,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1967 transitions. [2023-08-29 18:29:27,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 327.8333333333333) internal successors, (1967), 6 states have internal predecessors, (1967), 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 18:29:27,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 578.0) internal successors, (4046), 7 states have internal predecessors, (4046), 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 18:29:27,685 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 578.0) internal successors, (4046), 7 states have internal predecessors, (4046), 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 18:29:27,685 INFO L175 Difference]: Start difference. First operand has 161 places, 160 transitions, 338 flow. Second operand 6 states and 1967 transitions. [2023-08-29 18:29:27,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 371 transitions, 1382 flow [2023-08-29 18:29:27,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 371 transitions, 1382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:29:27,701 INFO L231 Difference]: Finished difference. Result has 171 places, 238 transitions, 884 flow [2023-08-29 18:29:27,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=884, PETRI_PLACES=171, PETRI_TRANSITIONS=238} [2023-08-29 18:29:27,702 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, 11 predicate places. [2023-08-29 18:29:27,702 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 238 transitions, 884 flow [2023-08-29 18:29:27,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.5) internal successors, (1665), 6 states have internal predecessors, (1665), 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 18:29:27,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:29:27,704 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 18:29:27,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 18:29:27,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:29:27,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:29:27,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1466839063, now seen corresponding path program 1 times [2023-08-29 18:29:27,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:29:27,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351671125] [2023-08-29 18:29:27,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:27,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:29:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:29:27,728 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:29:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:29:27,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:29:27,757 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:29:27,757 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 18:29:27,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 18:29:27,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 18:29:27,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 18:29:27,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 18:29:27,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 18:29:27,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 18:29:27,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 18:29:27,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 18:29:27,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 18:29:27,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 18:29:27,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 18:29:27,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 18:29:27,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 18:29:27,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 18:29:27,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 18:29:27,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 18:29:27,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 18:29:27,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 18:29:27,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 18:29:27,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 18:29:27,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 18:29:27,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:29:27,772 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 18:29:27,774 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:29:27,774 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:29:27,822 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:29:27,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 457 transitions, 944 flow [2023-08-29 18:29:27,986 INFO L130 PetriNetUnfolder]: 106/887 cut-off events. [2023-08-29 18:29:27,987 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:29:28,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 887 events. 106/887 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4768 event pairs, 1 based on Foata normal form. 0/734 useless extension candidates. Maximal degree in co-relation 621. Up to 16 conditions per place. [2023-08-29 18:29:28,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 457 transitions, 944 flow [2023-08-29 18:29:28,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 408 places, 455 transitions, 940 flow [2023-08-29 18:29:28,020 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:29:28,021 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 408 places, 455 transitions, 940 flow [2023-08-29 18:29:28,021 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 408 places, 455 transitions, 940 flow [2023-08-29 18:29:28,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 455 transitions, 940 flow [2023-08-29 18:29:28,178 INFO L130 PetriNetUnfolder]: 105/885 cut-off events. [2023-08-29 18:29:28,179 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:29:28,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 885 events. 105/885 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4799 event pairs, 1 based on Foata normal form. 0/733 useless extension candidates. Maximal degree in co-relation 619. Up to 16 conditions per place. [2023-08-29 18:29:28,242 INFO L119 LiptonReduction]: Number of co-enabled transitions 114480 [2023-08-29 18:29:35,564 INFO L134 LiptonReduction]: Checked pairs total: 653477 [2023-08-29 18:29:35,564 INFO L136 LiptonReduction]: Total number of compositions: 255 [2023-08-29 18:29:35,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:29:35,567 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;@175c008e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:29:35,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-29 18:29:35,573 INFO L130 PetriNetUnfolder]: 13/71 cut-off events. [2023-08-29 18:29:35,573 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:29:35,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:29:35,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:29:35,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:29:35,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:29:35,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1114093917, now seen corresponding path program 1 times [2023-08-29 18:29:35,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:29:35,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668698540] [2023-08-29 18:29:35,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:35,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:29:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:29:35,595 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 18:29:35,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:29:35,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668698540] [2023-08-29 18:29:35,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668698540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:29:35,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:29:35,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:29:35,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99284056] [2023-08-29 18:29:35,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:29:35,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:29:35,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:29:35,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:29:35,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:29:35,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 712 [2023-08-29 18:29:35,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 251 transitions, 532 flow. Second operand has 2 states, 2 states have (on average 403.0) internal successors, (806), 2 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 18:29:35,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:29:35,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 712 [2023-08-29 18:29:35,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:30:35,547 INFO L130 PetriNetUnfolder]: 402737/764482 cut-off events. [2023-08-29 18:30:35,547 INFO L131 PetriNetUnfolder]: For 4997/5555 co-relation queries the response was YES. [2023-08-29 18:30:38,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283637 conditions, 764482 events. 402737/764482 cut-off events. For 4997/5555 co-relation queries the response was YES. Maximal size of possible extension queue 15538. Compared 9981582 event pairs, 377214 based on Foata normal form. 99034/795144 useless extension candidates. Maximal degree in co-relation 296772. Up to 516524 conditions per place. [2023-08-29 18:30:41,739 INFO L137 encePairwiseOnDemand]: 670/712 looper letters, 80 selfloop transitions, 0 changer transitions 0/209 dead transitions. [2023-08-29 18:30:41,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 209 transitions, 608 flow [2023-08-29 18:30:41,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:30:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:30:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 924 transitions. [2023-08-29 18:30:41,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648876404494382 [2023-08-29 18:30:41,742 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 924 transitions. [2023-08-29 18:30:41,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 924 transitions. [2023-08-29 18:30:41,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:30:41,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 924 transitions. [2023-08-29 18:30:41,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 462.0) internal successors, (924), 2 states have internal predecessors, (924), 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 18:30:41,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 712.0) internal successors, (2136), 3 states have internal predecessors, (2136), 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 18:30:41,749 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 712.0) internal successors, (2136), 3 states have internal predecessors, (2136), 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 18:30:41,749 INFO L175 Difference]: Start difference. First operand has 209 places, 251 transitions, 532 flow. Second operand 2 states and 924 transitions. [2023-08-29 18:30:41,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 209 transitions, 608 flow [2023-08-29 18:30:41,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 209 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:30:41,755 INFO L231 Difference]: Finished difference. Result has 210 places, 209 transitions, 448 flow [2023-08-29 18:30:41,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=712, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=448, PETRI_PLACES=210, PETRI_TRANSITIONS=209} [2023-08-29 18:30:41,756 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 1 predicate places. [2023-08-29 18:30:41,756 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 209 transitions, 448 flow [2023-08-29 18:30:41,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 403.0) internal successors, (806), 2 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 18:30:41,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:30:41,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:30:41,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:30:41,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:30:41,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:30:41,758 INFO L85 PathProgramCache]: Analyzing trace with hash 472466054, now seen corresponding path program 1 times [2023-08-29 18:30:41,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:30:41,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448361317] [2023-08-29 18:30:41,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:30:41,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:30:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:30:41,940 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 18:30:41,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:30:41,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448361317] [2023-08-29 18:30:41,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448361317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:30:41,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:30:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 18:30:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68082603] [2023-08-29 18:30:41,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:30:41,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:30:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:30:41,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:30:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:30:42,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 712 [2023-08-29 18:30:42,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 209 transitions, 448 flow. Second operand has 6 states, 6 states have (on average 347.5) internal successors, (2085), 6 states have internal predecessors, (2085), 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 18:30:42,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:30:42,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 712 [2023-08-29 18:30:42,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand