./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.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_83-list2_racing1.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 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d --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 21:07:06,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 21:07:06,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 21:07:06,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 21:07:06,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 21:07:06,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 21:07:06,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 21:07:06,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 21:07:06,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 21:07:06,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 21:07:06,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 21:07:06,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 21:07:06,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 21:07:06,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 21:07:06,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 21:07:06,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 21:07:06,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 21:07:06,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 21:07:06,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 21:07:06,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 21:07:06,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 21:07:06,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 21:07:06,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 21:07:06,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 21:07:06,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 21:07:06,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 21:07:06,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 21:07:06,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 21:07:06,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 21:07:06,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 21:07:06,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 21:07:06,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 21:07:06,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 21:07:06,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 21:07:06,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 21:07:06,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 21:07:06,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 21:07:06,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 21:07:06,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 21:07:06,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 21:07:06,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 21:07:06,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 21:07:06,202 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 21:07:06,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 21:07:06,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 21:07:06,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 21:07:06,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 21:07:06,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 21:07:06,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 21:07:06,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 21:07:06,206 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 21:07:06,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 21:07:06,207 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 21:07:06,207 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 21:07:06,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 21:07:06,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 21:07:06,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 21:07:06,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 21:07:06,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 21:07:06,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 21:07:06,208 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 21:07:06,208 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 21:07:06,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 21:07:06,209 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 21:07:06,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 21:07:06,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 21:07:06,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 21:07:06,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 21:07:06,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:07:06,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 21:07:06,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 21:07:06,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 21:07:06,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 21:07:06,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 21:07:06,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 21:07:06,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 21:07:06,211 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 21:07:06,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 21:07:06,212 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 21:07:06,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 21:07:06,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 21:07:06,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 21:07:06,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 21:07:06,556 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 21:07:06,556 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 21:07:06,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-31 21:07:07,790 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 21:07:08,062 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 21:07:08,063 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-31 21:07:08,077 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8173e4644/3dbc25d1ba4a407eb73fff02543cef4b/FLAG1ff33774f [2023-08-31 21:07:08,092 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8173e4644/3dbc25d1ba4a407eb73fff02543cef4b [2023-08-31 21:07:08,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 21:07:08,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 21:07:08,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 21:07:08,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 21:07:08,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 21:07:08,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113ec44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08, skipping insertion in model container [2023-08-31 21:07:08,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 21:07:08,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 21:07:08,568 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_83-list2_racing1.i[47038,47051] [2023-08-31 21:07:08,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:07:08,643 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 21:07:08,670 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_83-list2_racing1.i[47038,47051] [2023-08-31 21:07:08,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:07:08,763 INFO L208 MainTranslator]: Completed translation [2023-08-31 21:07:08,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08 WrapperNode [2023-08-31 21:07:08,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 21:07:08,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 21:07:08,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 21:07:08,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 21:07:08,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,843 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 522 [2023-08-31 21:07:08,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 21:07:08,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 21:07:08,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 21:07:08,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 21:07:08,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,913 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 21:07:08,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 21:07:08,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 21:07:08,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 21:07:08,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08" (1/1) ... [2023-08-31 21:07:08,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:07:08,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:07:08,963 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 21:07:08,987 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 21:07:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 21:07:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-31 21:07:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-31 21:07:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-31 21:07:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 21:07:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 21:07:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-31 21:07:08,999 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-31 21:07:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 21:07:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 21:07:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 21:07:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 21:07:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 21:07:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-31 21:07:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-31 21:07:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 21:07:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 21:07:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 21:07:09,002 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 21:07:09,200 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 21:07:09,201 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 21:07:09,883 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 21:07:09,897 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 21:07:09,897 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-31 21:07:09,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:07:09 BoogieIcfgContainer [2023-08-31 21:07:09,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 21:07:09,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 21:07:09,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 21:07:09,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 21:07:09,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 09:07:08" (1/3) ... [2023-08-31 21:07:09,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9b6ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:07:09, skipping insertion in model container [2023-08-31 21:07:09,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:08" (2/3) ... [2023-08-31 21:07:09,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9b6ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:07:09, skipping insertion in model container [2023-08-31 21:07:09,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:07:09" (3/3) ... [2023-08-31 21:07:09,908 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2023-08-31 21:07:09,915 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 21:07:09,923 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 21:07:09,923 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-08-31 21:07:09,924 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 21:07:10,089 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 21:07:10,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 522 places, 561 transitions, 1164 flow [2023-08-31 21:07:10,694 INFO L130 PetriNetUnfolder]: 165/1600 cut-off events. [2023-08-31 21:07:10,695 INFO L131 PetriNetUnfolder]: For 36/66 co-relation queries the response was YES. [2023-08-31 21:07:10,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 1600 events. 165/1600 cut-off events. For 36/66 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 11505 event pairs, 0 based on Foata normal form. 0/1337 useless extension candidates. Maximal degree in co-relation 821. Up to 16 conditions per place. [2023-08-31 21:07:10,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 522 places, 561 transitions, 1164 flow [2023-08-31 21:07:10,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 514 places, 553 transitions, 1148 flow [2023-08-31 21:07:10,750 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:07:10,763 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 514 places, 553 transitions, 1148 flow [2023-08-31 21:07:10,767 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 514 places, 553 transitions, 1148 flow [2023-08-31 21:07:10,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 514 places, 553 transitions, 1148 flow [2023-08-31 21:07:11,260 INFO L130 PetriNetUnfolder]: 165/1592 cut-off events. [2023-08-31 21:07:11,260 INFO L131 PetriNetUnfolder]: For 36/66 co-relation queries the response was YES. [2023-08-31 21:07:11,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 1592 events. 165/1592 cut-off events. For 36/66 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 11403 event pairs, 0 based on Foata normal form. 0/1337 useless extension candidates. Maximal degree in co-relation 813. Up to 16 conditions per place. [2023-08-31 21:07:11,375 INFO L119 LiptonReduction]: Number of co-enabled transitions 137088 [2023-08-31 21:07:38,797 WARN L222 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 199 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:07:52,611 WARN L222 SmtUtils]: Spent 10.26s on a formula simplification. DAG size of input: 287 DAG size of output: 285 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:07:57,836 WARN L222 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:08:05,349 WARN L222 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 287 DAG size of output: 285 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:08:08,945 INFO L134 LiptonReduction]: Checked pairs total: 733574 [2023-08-31 21:08:08,945 INFO L136 LiptonReduction]: Total number of compositions: 341 [2023-08-31 21:08:08,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:08:08,961 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;@2190c0d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:08:08,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 21:08:08,966 INFO L130 PetriNetUnfolder]: 0/20 cut-off events. [2023-08-31 21:08:08,967 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 21:08:08,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:08:08,968 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 21:08:08,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 21:08:08,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:08:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash -562554335, now seen corresponding path program 1 times [2023-08-31 21:08:08,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:08:08,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307971121] [2023-08-31 21:08:08,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:08:08,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:08:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:08:09,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:08:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:08:09,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:08:09,329 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:08:09,329 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-31 21:08:09,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-31 21:08:09,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-31 21:08:09,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 21:08:09,333 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:08:09,338 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-31 21:08:09,339 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:08:09,340 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 21:08:09,487 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-31 21:08:09,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 848 places, 921 transitions, 1932 flow [2023-08-31 21:08:12,942 INFO L130 PetriNetUnfolder]: 1132/7933 cut-off events. [2023-08-31 21:08:12,943 INFO L131 PetriNetUnfolder]: For 602/839 co-relation queries the response was YES. [2023-08-31 21:08:13,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8607 conditions, 7933 events. 1132/7933 cut-off events. For 602/839 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 80754 event pairs, 22 based on Foata normal form. 0/6631 useless extension candidates. Maximal degree in co-relation 4881. Up to 192 conditions per place. [2023-08-31 21:08:13,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 848 places, 921 transitions, 1932 flow [2023-08-31 21:08:13,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 840 places, 913 transitions, 1916 flow [2023-08-31 21:08:13,313 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:08:13,313 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 840 places, 913 transitions, 1916 flow [2023-08-31 21:08:13,313 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 840 places, 913 transitions, 1916 flow [2023-08-31 21:08:13,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 840 places, 913 transitions, 1916 flow [2023-08-31 21:08:16,634 INFO L130 PetriNetUnfolder]: 1132/7925 cut-off events. [2023-08-31 21:08:16,635 INFO L131 PetriNetUnfolder]: For 602/839 co-relation queries the response was YES. [2023-08-31 21:08:16,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8599 conditions, 7925 events. 1132/7925 cut-off events. For 602/839 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 80506 event pairs, 22 based on Foata normal form. 0/6631 useless extension candidates. Maximal degree in co-relation 4873. Up to 192 conditions per place. [2023-08-31 21:08:17,648 INFO L119 LiptonReduction]: Number of co-enabled transitions 530760 [2023-08-31 21:09:08,396 WARN L222 SmtUtils]: Spent 15.62s on a formula simplification. DAG size of input: 305 DAG size of output: 303 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:09:41,358 WARN L222 SmtUtils]: Spent 30.26s on a formula simplification. DAG size of input: 305 DAG size of output: 303 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:09:52,780 WARN L222 SmtUtils]: Spent 11.42s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:09:52,794 INFO L134 LiptonReduction]: Checked pairs total: 3033357 [2023-08-31 21:09:52,794 INFO L136 LiptonReduction]: Total number of compositions: 506 [2023-08-31 21:09:52,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:09:52,798 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;@2190c0d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:09:52,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 21:09:52,809 INFO L130 PetriNetUnfolder]: 0/119 cut-off events. [2023-08-31 21:09:52,809 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 21:09:52,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:09:52,809 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 21:09:52,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 21:09:52,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:09:52,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1676740333, now seen corresponding path program 1 times [2023-08-31 21:09:52,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:09:52,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652929658] [2023-08-31 21:09:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:09:52,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:09:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:09:52,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:09:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:09:52,874 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:09:52,875 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:09:52,875 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-31 21:09:52,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-31 21:09:52,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-31 21:09:52,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 21:09:52,876 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:09:52,877 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-31 21:09:52,877 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:09:52,877 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 21:09:53,000 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-08-31 21:09:53,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1174 places, 1281 transitions, 2706 flow [2023-08-31 21:10:24,032 INFO L130 PetriNetUnfolder]: 8987/43538 cut-off events. [2023-08-31 21:10:24,032 INFO L131 PetriNetUnfolder]: For 7059/7797 co-relation queries the response was YES. [2023-08-31 21:10:27,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50712 conditions, 43538 events. 8987/43538 cut-off events. For 7059/7797 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 536123 event pairs, 912 based on Foata normal form. 0/37164 useless extension candidates. Maximal degree in co-relation 27017. Up to 2304 conditions per place. [2023-08-31 21:10:27,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 1174 places, 1281 transitions, 2706 flow [2023-08-31 21:10:29,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1166 places, 1273 transitions, 2690 flow [2023-08-31 21:10:29,328 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:10:29,328 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1166 places, 1273 transitions, 2690 flow [2023-08-31 21:10:29,329 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1166 places, 1273 transitions, 2690 flow [2023-08-31 21:10:29,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1166 places, 1273 transitions, 2690 flow [2023-08-31 21:10:58,682 INFO L130 PetriNetUnfolder]: 8987/43530 cut-off events. [2023-08-31 21:10:58,682 INFO L131 PetriNetUnfolder]: For 7059/7797 co-relation queries the response was YES. [2023-08-31 21:11:02,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50704 conditions, 43530 events. 8987/43530 cut-off events. For 7059/7797 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 536583 event pairs, 912 based on Foata normal form. 0/37164 useless extension candidates. Maximal degree in co-relation 27009. Up to 2304 conditions per place. [2023-08-31 21:11:10,018 INFO L119 LiptonReduction]: Number of co-enabled transitions 1181016 [2023-08-31 21:11:45,062 WARN L222 SmtUtils]: Spent 7.33s on a formula simplification that was a NOOP. DAG size: 199 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:12:09,915 WARN L222 SmtUtils]: Spent 12.06s on a formula simplification. DAG size of input: 285 DAG size of output: 283 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:12:15,908 WARN L222 SmtUtils]: Spent 5.99s on a formula simplification that was a NOOP. DAG size: 275 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:12:44,084 WARN L222 SmtUtils]: Spent 28.17s on a formula simplification. DAG size of input: 285 DAG size of output: 283 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:12:57,330 WARN L222 SmtUtils]: Spent 13.24s on a formula simplification that was a NOOP. DAG size: 275 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:13:04,002 WARN L222 SmtUtils]: Spent 6.65s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:13:10,537 WARN L222 SmtUtils]: Spent 6.53s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:13:23,675 WARN L222 SmtUtils]: Spent 13.14s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:13:36,847 WARN L222 SmtUtils]: Spent 13.17s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:13:36,873 INFO L134 LiptonReduction]: Checked pairs total: 7529287 [2023-08-31 21:13:36,873 INFO L136 LiptonReduction]: Total number of compositions: 691 [2023-08-31 21:13:36,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:13:36,877 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;@2190c0d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:13:36,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 21:13:36,907 INFO L130 PetriNetUnfolder]: 23/466 cut-off events. [2023-08-31 21:13:36,907 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-08-31 21:13:36,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:13:36,908 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 21:13:36,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 21:13:36,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:13:36,908 INFO L85 PathProgramCache]: Analyzing trace with hash 803361287, now seen corresponding path program 1 times [2023-08-31 21:13:36,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:13:36,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763055178] [2023-08-31 21:13:36,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:13:36,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:13:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:13:36,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:13:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:13:36,970 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:13:36,971 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:13:36,971 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-31 21:13:36,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-31 21:13:36,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-31 21:13:36,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 21:13:36,972 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:13:36,972 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-31 21:13:36,972 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:13:36,973 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 21:13:37,109 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-08-31 21:13:37,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1500 places, 1641 transitions, 3486 flow