./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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_81-list_racing.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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 21:04:12,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 21:04:12,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 21:04:12,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 21:04:12,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 21:04:12,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 21:04:12,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 21:04:12,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 21:04:12,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 21:04:12,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 21:04:12,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 21:04:12,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 21:04:12,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 21:04:12,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 21:04:12,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 21:04:12,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 21:04:12,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 21:04:12,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 21:04:12,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 21:04:12,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 21:04:12,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 21:04:12,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 21:04:12,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 21:04:12,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 21:04:12,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 21:04:12,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 21:04:12,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 21:04:12,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 21:04:12,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 21:04:12,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 21:04:12,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 21:04:12,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 21:04:12,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 21:04:12,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 21:04:12,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 21:04:12,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 21:04:12,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 21:04:12,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 21:04:12,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 21:04:12,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 21:04:12,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 21:04:12,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 21:04:12,253 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 21:04:12,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 21:04:12,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 21:04:12,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 21:04:12,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 21:04:12,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 21:04:12,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 21:04:12,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 21:04:12,256 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 21:04:12,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 21:04:12,257 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 21:04:12,257 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 21:04:12,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 21:04:12,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 21:04:12,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 21:04:12,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 21:04:12,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 21:04:12,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 21:04:12,259 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 21:04:12,259 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 21:04:12,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 21:04:12,259 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 21:04:12,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 21:04:12,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 21:04:12,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 21:04:12,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 21:04:12,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:04:12,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 21:04:12,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 21:04:12,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 21:04:12,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 21:04:12,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 21:04:12,261 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 21:04:12,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 21:04:12,261 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 21:04:12,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 21:04:12,262 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 21:04:12,262 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 21:04:12,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 21:04:12,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 21:04:12,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 21:04:12,571 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 21:04:12,572 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 21:04:12,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-31 21:04:13,865 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 21:04:14,157 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 21:04:14,157 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-31 21:04:14,172 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fccbf0b8/c4bc5ada12eb4f33bb8fd1d5f0cb63ad/FLAGd1bc8f76e [2023-08-31 21:04:14,187 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fccbf0b8/c4bc5ada12eb4f33bb8fd1d5f0cb63ad [2023-08-31 21:04:14,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 21:04:14,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 21:04:14,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 21:04:14,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 21:04:14,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 21:04:14,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f54939e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14, skipping insertion in model container [2023-08-31 21:04:14,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 21:04:14,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 21:04:14,633 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_81-list_racing.i[47038,47051] [2023-08-31 21:04:14,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:04:14,724 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 21:04:14,766 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_81-list_racing.i[47038,47051] [2023-08-31 21:04:14,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:04:14,867 INFO L208 MainTranslator]: Completed translation [2023-08-31 21:04:14,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14 WrapperNode [2023-08-31 21:04:14,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 21:04:14,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 21:04:14,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 21:04:14,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 21:04:14,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,932 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 312 [2023-08-31 21:04:14,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 21:04:14,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 21:04:14,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 21:04:14,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 21:04:14,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,975 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 21:04:14,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 21:04:14,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 21:04:14,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 21:04:14,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14" (1/1) ... [2023-08-31 21:04:14,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:04:15,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:04:15,030 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) [2023-08-31 21:04:15,038 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 [2023-08-31 21:04:15,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 21:04:15,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-31 21:04:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-31 21:04:15,069 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-31 21:04:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 21:04:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 21:04:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-31 21:04:15,069 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-31 21:04:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 21:04:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 21:04:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 21:04:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 21:04:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 21:04:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 21:04:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 21:04:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 21:04:15,072 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 21:04:15,268 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 21:04:15,276 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 21:04:15,739 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 21:04:15,746 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 21:04:15,746 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-08-31 21:04:15,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:04:15 BoogieIcfgContainer [2023-08-31 21:04:15,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 21:04:15,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 21:04:15,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 21:04:15,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 21:04:15,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 09:04:14" (1/3) ... [2023-08-31 21:04:15,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccc5cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:04:15, skipping insertion in model container [2023-08-31 21:04:15,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:04:14" (2/3) ... [2023-08-31 21:04:15,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccc5cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:04:15, skipping insertion in model container [2023-08-31 21:04:15,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:04:15" (3/3) ... [2023-08-31 21:04:15,755 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-08-31 21:04:15,762 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 21:04:15,771 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 21:04:15,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-31 21:04:15,771 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 21:04:15,883 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 21:04:15,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 334 transitions, 690 flow [2023-08-31 21:04:16,144 INFO L130 PetriNetUnfolder]: 52/607 cut-off events. [2023-08-31 21:04:16,144 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-31 21:04:16,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 607 events. 52/607 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2727 event pairs, 0 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 302. Up to 8 conditions per place. [2023-08-31 21:04:16,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 334 transitions, 690 flow [2023-08-31 21:04:16,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 328 transitions, 672 flow [2023-08-31 21:04:16,174 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:04:16,195 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 328 transitions, 672 flow [2023-08-31 21:04:16,199 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 328 transitions, 672 flow [2023-08-31 21:04:16,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 328 transitions, 672 flow [2023-08-31 21:04:16,305 INFO L130 PetriNetUnfolder]: 48/591 cut-off events. [2023-08-31 21:04:16,305 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2023-08-31 21:04:16,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 591 events. 48/591 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2486 event pairs, 0 based on Foata normal form. 0/501 useless extension candidates. Maximal degree in co-relation 290. Up to 8 conditions per place. [2023-08-31 21:04:16,336 INFO L119 LiptonReduction]: Number of co-enabled transitions 37758 [2023-08-31 21:04:35,394 INFO L134 LiptonReduction]: Checked pairs total: 206740 [2023-08-31 21:04:35,394 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-08-31 21:04:35,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:04:35,413 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;@52f6740b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:04:35,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 21:04:35,419 INFO L130 PetriNetUnfolder]: 0/29 cut-off events. [2023-08-31 21:04:35,419 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 21:04:35,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:04:35,420 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 21:04:35,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:04:35,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:04:35,425 INFO L85 PathProgramCache]: Analyzing trace with hash 788631624, now seen corresponding path program 1 times [2023-08-31 21:04:35,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:04:35,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445121348] [2023-08-31 21:04:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:04:35,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:04:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:04:35,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:04:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:04:35,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:04:35,695 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:04:35,696 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 21:04:35,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 21:04:35,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 21:04:35,699 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:04:35,704 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 21:04:35,705 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:04:35,705 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 21:04:35,809 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 21:04:35,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 537 transitions, 1122 flow [2023-08-31 21:04:36,359 INFO L130 PetriNetUnfolder]: 191/1765 cut-off events. [2023-08-31 21:04:36,360 INFO L131 PetriNetUnfolder]: For 72/114 co-relation queries the response was YES. [2023-08-31 21:04:36,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 1765 events. 191/1765 cut-off events. For 72/114 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 12225 event pairs, 2 based on Foata normal form. 0/1477 useless extension candidates. Maximal degree in co-relation 1098. Up to 32 conditions per place. [2023-08-31 21:04:36,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 504 places, 537 transitions, 1122 flow [2023-08-31 21:04:36,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 500 places, 533 transitions, 1114 flow [2023-08-31 21:04:36,409 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:04:36,409 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 500 places, 533 transitions, 1114 flow [2023-08-31 21:04:36,409 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 500 places, 533 transitions, 1114 flow [2023-08-31 21:04:36,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 533 transitions, 1114 flow [2023-08-31 21:04:37,017 INFO L130 PetriNetUnfolder]: 191/1761 cut-off events. [2023-08-31 21:04:37,019 INFO L131 PetriNetUnfolder]: For 72/114 co-relation queries the response was YES. [2023-08-31 21:04:37,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1858 conditions, 1761 events. 191/1761 cut-off events. For 72/114 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 12211 event pairs, 2 based on Foata normal form. 0/1477 useless extension candidates. Maximal degree in co-relation 1094. Up to 32 conditions per place. [2023-08-31 21:04:37,216 INFO L119 LiptonReduction]: Number of co-enabled transitions 159496 [2023-08-31 21:04:53,106 INFO L134 LiptonReduction]: Checked pairs total: 874307 [2023-08-31 21:04:53,107 INFO L136 LiptonReduction]: Total number of compositions: 286 [2023-08-31 21:04:53,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:04:53,110 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;@52f6740b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:04:53,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 21:04:53,119 INFO L130 PetriNetUnfolder]: 3/111 cut-off events. [2023-08-31 21:04:53,119 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 21:04:53,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:04:53,120 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 21:04:53,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:04:53,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:04:53,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1848237395, now seen corresponding path program 1 times [2023-08-31 21:04:53,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:04:53,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759886502] [2023-08-31 21:04:53,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:04:53,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:04:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:04:53,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:04:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:04:53,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:04:53,198 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:04:53,198 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 21:04:53,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 21:04:53,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 21:04:53,198 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:04:53,199 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 21:04:53,199 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:04:53,199 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 21:04:53,271 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 21:04:53,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 692 places, 740 transitions, 1558 flow [2023-08-31 21:04:55,026 INFO L130 PetriNetUnfolder]: 664/4775 cut-off events. [2023-08-31 21:04:55,027 INFO L131 PetriNetUnfolder]: For 419/541 co-relation queries the response was YES. [2023-08-31 21:04:55,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5226 conditions, 4775 events. 664/4775 cut-off events. For 419/541 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 40490 event pairs, 52 based on Foata normal form. 0/4016 useless extension candidates. Maximal degree in co-relation 3075. Up to 192 conditions per place. [2023-08-31 21:04:55,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 692 places, 740 transitions, 1558 flow [2023-08-31 21:04:55,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 688 places, 736 transitions, 1550 flow [2023-08-31 21:04:55,222 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:04:55,222 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 688 places, 736 transitions, 1550 flow [2023-08-31 21:04:55,222 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 688 places, 736 transitions, 1550 flow [2023-08-31 21:04:55,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 688 places, 736 transitions, 1550 flow [2023-08-31 21:04:56,844 INFO L130 PetriNetUnfolder]: 664/4771 cut-off events. [2023-08-31 21:04:56,844 INFO L131 PetriNetUnfolder]: For 419/541 co-relation queries the response was YES. [2023-08-31 21:04:56,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5222 conditions, 4771 events. 664/4771 cut-off events. For 419/541 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 40491 event pairs, 52 based on Foata normal form. 0/4016 useless extension candidates. Maximal degree in co-relation 3071. Up to 192 conditions per place. [2023-08-31 21:04:57,507 INFO L119 LiptonReduction]: Number of co-enabled transitions 361374 [2023-08-31 21:05:15,422 WARN L222 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 200 DAG size of output: 198 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:05:19,347 INFO L134 LiptonReduction]: Checked pairs total: 2015928 [2023-08-31 21:05:19,347 INFO L136 LiptonReduction]: Total number of compositions: 386 [2023-08-31 21:05:19,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:05:19,350 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;@52f6740b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:05:19,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 21:05:19,369 INFO L130 PetriNetUnfolder]: 12/256 cut-off events. [2023-08-31 21:05:19,370 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-31 21:05:19,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:05:19,370 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 21:05:19,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:05:19,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:05:19,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1311316816, now seen corresponding path program 1 times [2023-08-31 21:05:19,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:05:19,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479604324] [2023-08-31 21:05:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:05:19,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:05:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:05:19,403 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:05:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:05:19,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:05:19,443 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:05:19,443 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 21:05:19,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 21:05:19,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 21:05:19,444 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:05:19,444 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 21:05:19,444 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:05:19,445 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 21:05:19,546 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-31 21:05:19,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 880 places, 943 transitions, 1998 flow [2023-08-31 21:05:26,413 INFO L130 PetriNetUnfolder]: 2659/14605 cut-off events. [2023-08-31 21:05:26,413 INFO L131 PetriNetUnfolder]: For 2144/2384 co-relation queries the response was YES. [2023-08-31 21:05:27,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16770 conditions, 14605 events. 2659/14605 cut-off events. For 2144/2384 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 148126 event pairs, 626 based on Foata normal form. 0/12459 useless extension candidates. Maximal degree in co-relation 9151. Up to 1024 conditions per place. [2023-08-31 21:05:27,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 880 places, 943 transitions, 1998 flow [2023-08-31 21:05:27,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 876 places, 939 transitions, 1990 flow [2023-08-31 21:05:27,468 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:05:27,468 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 876 places, 939 transitions, 1990 flow [2023-08-31 21:05:27,469 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 876 places, 939 transitions, 1990 flow [2023-08-31 21:05:27,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 876 places, 939 transitions, 1990 flow [2023-08-31 21:05:34,139 INFO L130 PetriNetUnfolder]: 2659/14601 cut-off events. [2023-08-31 21:05:34,140 INFO L131 PetriNetUnfolder]: For 2144/2384 co-relation queries the response was YES. [2023-08-31 21:05:34,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16766 conditions, 14601 events. 2659/14601 cut-off events. For 2144/2384 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 148263 event pairs, 626 based on Foata normal form. 0/12459 useless extension candidates. Maximal degree in co-relation 9147. Up to 1024 conditions per place. [2023-08-31 21:05:36,539 INFO L119 LiptonReduction]: Number of co-enabled transitions 644672 [2023-08-31 21:05:53,634 INFO L134 LiptonReduction]: Checked pairs total: 3629685 [2023-08-31 21:05:53,634 INFO L136 LiptonReduction]: Total number of compositions: 476 [2023-08-31 21:05:53,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:05:53,638 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;@52f6740b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:05:53,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 21:05:53,667 INFO L130 PetriNetUnfolder]: 30/491 cut-off events. [2023-08-31 21:05:53,668 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-31 21:05:53,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:05:53,668 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 21:05:53,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:05:53,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:05:53,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1773159978, now seen corresponding path program 1 times [2023-08-31 21:05:53,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:05:53,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876793793] [2023-08-31 21:05:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:05:53,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:05:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:05:53,704 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:05:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:05:53,727 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:05:53,728 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:05:53,728 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 21:05:53,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 21:05:53,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 21:05:53,728 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:05:53,729 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 21:05:53,729 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:05:53,729 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 21:05:53,853 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-31 21:05:53,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1068 places, 1146 transitions, 2442 flow [2023-08-31 21:06:29,665 INFO L130 PetriNetUnfolder]: 11792/51991 cut-off events. [2023-08-31 21:06:29,665 INFO L131 PetriNetUnfolder]: For 10450/10835 co-relation queries the response was YES. [2023-08-31 21:06:35,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62417 conditions, 51991 events. 11792/51991 cut-off events. For 10450/10835 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 633150 event pairs, 4296 based on Foata normal form. 0/44954 useless extension candidates. Maximal degree in co-relation 31857. Up to 5120 conditions per place. [2023-08-31 21:06:35,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 1068 places, 1146 transitions, 2442 flow [2023-08-31 21:06:36,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1064 places, 1142 transitions, 2434 flow [2023-08-31 21:06:36,580 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:06:36,580 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1064 places, 1142 transitions, 2434 flow [2023-08-31 21:06:36,580 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1064 places, 1142 transitions, 2434 flow [2023-08-31 21:06:36,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1064 places, 1142 transitions, 2434 flow [2023-08-31 21:07:10,775 INFO L130 PetriNetUnfolder]: 11792/51987 cut-off events. [2023-08-31 21:07:10,775 INFO L131 PetriNetUnfolder]: For 10450/10835 co-relation queries the response was YES. [2023-08-31 21:07:16,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62413 conditions, 51987 events. 11792/51987 cut-off events. For 10450/10835 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 635644 event pairs, 4296 based on Foata normal form. 0/44954 useless extension candidates. Maximal degree in co-relation 31853. Up to 5120 conditions per place. [2023-08-31 21:07:26,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 1009390 [2023-08-31 21:07:44,959 INFO L134 LiptonReduction]: Checked pairs total: 6370034 [2023-08-31 21:07:44,960 INFO L136 LiptonReduction]: Total number of compositions: 574 [2023-08-31 21:07:44,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:07:44,963 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;@52f6740b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:07:44,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 21:07:45,028 INFO L130 PetriNetUnfolder]: 61/831 cut-off events. [2023-08-31 21:07:45,028 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-08-31 21:07:45,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:07:45,029 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:07:45,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:07:45,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:07:45,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1239231548, now seen corresponding path program 1 times [2023-08-31 21:07:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:07:45,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358877755] [2023-08-31 21:07:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:07:45,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:07:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:07:45,058 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:07:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:07:45,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:07:45,083 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:07:45,083 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 21:07:45,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 21:07:45,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 21:07:45,083 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:07:45,084 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 21:07:45,084 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:07:45,084 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 21:07:45,210 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-31 21:07:45,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1256 places, 1349 transitions, 2890 flow