./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:31:40,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:31:40,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:31:40,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:31:40,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:31:40,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:31:40,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:31:40,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:31:40,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:31:40,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:31:40,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:31:40,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:31:40,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:31:40,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:31:40,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:31:40,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:31:40,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:31:40,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:31:40,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:31:40,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:31:40,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:31:40,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:31:40,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:31:40,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:31:40,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:31:40,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:31:40,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:31:40,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:31:40,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:31:40,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:31:40,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:31:40,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:31:40,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:31:40,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:31:40,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:31:40,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:31:40,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:31:40,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:31:40,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:31:40,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:31:40,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:31:40,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:31:40,194 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:31:40,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:31:40,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:31:40,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:31:40,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:31:40,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:31:40,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:31:40,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:31:40,197 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:31:40,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:31:40,198 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:31:40,198 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:31:40,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:31:40,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:31:40,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:31:40,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:31:40,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:31:40,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:31:40,199 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:31:40,199 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:31:40,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:31:40,199 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:31:40,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:31:40,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:31:40,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:31:40,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:31:40,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:31:40,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:31:40,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:31:40,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:31:40,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:31:40,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:31:40,201 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:31:40,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:31:40,202 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:31:40,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:31:40,202 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:31:40,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:31:40,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:31:40,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:31:40,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:31:40,437 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:31:40,437 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:31:40,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-08-29 18:31:41,778 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:31:42,015 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:31:42,016 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-08-29 18:31:42,033 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb1d6ee9/9d1f3a13afb24d90ba6580d166900622/FLAG021e6e85f [2023-08-29 18:31:42,046 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb1d6ee9/9d1f3a13afb24d90ba6580d166900622 [2023-08-29 18:31:42,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:31:42,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:31:42,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:31:42,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:31:42,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:31:42,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f802881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42, skipping insertion in model container [2023-08-29 18:31:42,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:31:42,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:31:42,316 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_82-list_racefree.i[47038,47051] [2023-08-29 18:31:42,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:31:42,349 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:31:42,368 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_82-list_racefree.i[47038,47051] [2023-08-29 18:31:42,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:31:42,421 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:31:42,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42 WrapperNode [2023-08-29 18:31:42,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:31:42,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:31:42,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:31:42,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:31:42,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,471 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 314 [2023-08-29 18:31:42,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:31:42,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:31:42,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:31:42,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:31:42,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,514 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:31:42,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:31:42,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:31:42,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:31:42,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42" (1/1) ... [2023-08-29 18:31:42,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:31:42,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:31:42,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 18:31:42,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 18:31:42,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:31:42,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 18:31:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 18:31:42,608 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 18:31:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:31:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:31:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 18:31:42,608 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 18:31:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:31:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:31:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 18:31:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:31:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 18:31:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:31:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:31:42,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:31:42,610 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:31:42,753 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:31:42,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:31:43,234 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:31:43,242 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:31:43,242 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-08-29 18:31:43,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:31:43 BoogieIcfgContainer [2023-08-29 18:31:43,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:31:43,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:31:43,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:31:43,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:31:43,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:31:42" (1/3) ... [2023-08-29 18:31:43,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2975136d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:31:43, skipping insertion in model container [2023-08-29 18:31:43,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:31:42" (2/3) ... [2023-08-29 18:31:43,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2975136d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:31:43, skipping insertion in model container [2023-08-29 18:31:43,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:31:43" (3/3) ... [2023-08-29 18:31:43,259 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-08-29 18:31:43,264 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:31:43,271 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:31:43,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-29 18:31:43,272 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:31:43,370 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 18:31:43,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 335 transitions, 692 flow [2023-08-29 18:31:43,564 INFO L130 PetriNetUnfolder]: 52/611 cut-off events. [2023-08-29 18:31:43,564 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 18:31:43,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 611 events. 52/611 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2743 event pairs, 0 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 305. Up to 8 conditions per place. [2023-08-29 18:31:43,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 335 transitions, 692 flow [2023-08-29 18:31:43,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 335 transitions, 692 flow [2023-08-29 18:31:43,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:31:43,608 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 317 places, 335 transitions, 692 flow [2023-08-29 18:31:43,616 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 317 places, 335 transitions, 692 flow [2023-08-29 18:31:43,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 335 transitions, 692 flow [2023-08-29 18:31:43,685 INFO L130 PetriNetUnfolder]: 52/611 cut-off events. [2023-08-29 18:31:43,686 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 18:31:43,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 611 events. 52/611 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2743 event pairs, 0 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 305. Up to 8 conditions per place. [2023-08-29 18:31:43,715 INFO L119 LiptonReduction]: Number of co-enabled transitions 39728 [2023-08-29 18:31:56,173 WARN L222 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 215 DAG size of output: 209 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:32:00,622 INFO L134 LiptonReduction]: Checked pairs total: 222020 [2023-08-29 18:32:00,623 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-08-29 18:32:00,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:32:00,636 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;@6fd0c317, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:32:00,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-29 18:32:00,638 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 18:32:00,638 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:32:00,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:32:00,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 18:32:00,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-29 18:32:00,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:32:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1207, now seen corresponding path program 1 times [2023-08-29 18:32:00,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:32:00,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774390844] [2023-08-29 18:32:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:32:00,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:32:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:32:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:32:00,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:32:00,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774390844] [2023-08-29 18:32:00,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774390844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:32:00,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:32:00,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 18:32:00,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63748713] [2023-08-29 18:32:00,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:32:00,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:32:00,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:32:00,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:32:00,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:32:00,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 549 [2023-08-29 18:32:00,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 158 transitions, 338 flow. Second operand has 2 states, 2 states have (on average 312.5) internal successors, (625), 2 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:32:00,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:32:00,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 549 [2023-08-29 18:32:00,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:32:02,307 INFO L130 PetriNetUnfolder]: 6124/15865 cut-off events. [2023-08-29 18:32:02,308 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2023-08-29 18:32:02,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25456 conditions, 15865 events. 6124/15865 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 149685 event pairs, 5770 based on Foata normal form. 548/14477 useless extension candidates. Maximal degree in co-relation 23797. Up to 9470 conditions per place. [2023-08-29 18:32:02,500 INFO L137 encePairwiseOnDemand]: 534/549 looper letters, 57 selfloop transitions, 0 changer transitions 0/143 dead transitions. [2023-08-29 18:32:02,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 143 transitions, 422 flow [2023-08-29 18:32:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:32:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:32:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 696 transitions. [2023-08-29 18:32:02,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6338797814207651 [2023-08-29 18:32:02,536 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 696 transitions. [2023-08-29 18:32:02,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 696 transitions. [2023-08-29 18:32:02,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:32:02,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 696 transitions. [2023-08-29 18:32:02,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 348.0) internal successors, (696), 2 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:32:02,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 549.0) internal successors, (1647), 3 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:32:02,550 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 549.0) internal successors, (1647), 3 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:32:02,551 INFO L175 Difference]: Start difference. First operand has 146 places, 158 transitions, 338 flow. Second operand 2 states and 696 transitions. [2023-08-29 18:32:02,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 143 transitions, 422 flow [2023-08-29 18:32:02,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 143 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:32:02,566 INFO L231 Difference]: Finished difference. Result has 143 places, 143 transitions, 308 flow [2023-08-29 18:32:02,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=308, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2023-08-29 18:32:02,584 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -3 predicate places. [2023-08-29 18:32:02,584 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 308 flow [2023-08-29 18:32:02,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 312.5) internal successors, (625), 2 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:32:02,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:32:02,585 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 18:32:02,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:32:02,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-29 18:32:02,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:32:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1426013205, now seen corresponding path program 1 times [2023-08-29 18:32:02,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:32:02,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393171832] [2023-08-29 18:32:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:32:02,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:32:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:32:02,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:32:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:32:02,677 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:32:02,681 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:32:02,682 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-08-29 18:32:02,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-08-29 18:32:02,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-08-29 18:32:02,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-08-29 18:32:02,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-08-29 18:32:02,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-08-29 18:32:02,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-08-29 18:32:02,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-08-29 18:32:02,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-08-29 18:32:02,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-08-29 18:32:02,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-08-29 18:32:02,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-08-29 18:32:02,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-08-29 18:32:02,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-08-29 18:32:02,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-08-29 18:32:02,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 36 remaining) [2023-08-29 18:32:02,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-08-29 18:32:02,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-08-29 18:32:02,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-08-29 18:32:02,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-08-29 18:32:02,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-08-29 18:32:02,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-08-29 18:32:02,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-08-29 18:32:02,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-08-29 18:32:02,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-08-29 18:32:02,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-08-29 18:32:02,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-08-29 18:32:02,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-08-29 18:32:02,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-08-29 18:32:02,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-08-29 18:32:02,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-08-29 18:32:02,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-08-29 18:32:02,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-08-29 18:32:02,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-08-29 18:32:02,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-08-29 18:32:02,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-08-29 18:32:02,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:32:02,694 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 18:32:02,696 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:32:02,697 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:32:02,776 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-29 18:32:02,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 508 places, 541 transitions, 1130 flow [2023-08-29 18:32:03,100 INFO L130 PetriNetUnfolder]: 191/1781 cut-off events. [2023-08-29 18:32:03,100 INFO L131 PetriNetUnfolder]: For 72/120 co-relation queries the response was YES. [2023-08-29 18:32:03,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 1781 events. 191/1781 cut-off events. For 72/120 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 12321 event pairs, 2 based on Foata normal form. 0/1493 useless extension candidates. Maximal degree in co-relation 1108. Up to 32 conditions per place. [2023-08-29 18:32:03,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 508 places, 541 transitions, 1130 flow [2023-08-29 18:32:03,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 508 places, 541 transitions, 1130 flow [2023-08-29 18:32:03,152 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:32:03,152 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 508 places, 541 transitions, 1130 flow [2023-08-29 18:32:03,153 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 508 places, 541 transitions, 1130 flow [2023-08-29 18:32:03,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 508 places, 541 transitions, 1130 flow [2023-08-29 18:32:03,430 INFO L130 PetriNetUnfolder]: 191/1781 cut-off events. [2023-08-29 18:32:03,431 INFO L131 PetriNetUnfolder]: For 72/120 co-relation queries the response was YES. [2023-08-29 18:32:03,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 1781 events. 191/1781 cut-off events. For 72/120 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 12321 event pairs, 2 based on Foata normal form. 0/1493 useless extension candidates. Maximal degree in co-relation 1108. Up to 32 conditions per place. [2023-08-29 18:32:03,611 INFO L119 LiptonReduction]: Number of co-enabled transitions 163312 [2023-08-29 18:32:25,089 INFO L134 LiptonReduction]: Checked pairs total: 888193 [2023-08-29 18:32:25,090 INFO L136 LiptonReduction]: Total number of compositions: 304 [2023-08-29 18:32:25,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:32:25,096 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;@6fd0c317, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:32:25,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-08-29 18:32:25,097 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 18:32:25,097 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:32:25,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:32:25,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 18:32:25,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-29 18:32:25,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:32:25,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2260, now seen corresponding path program 1 times [2023-08-29 18:32:25,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:32:25,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520149909] [2023-08-29 18:32:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:32:25,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:32:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:32:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:32:25,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:32:25,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520149909] [2023-08-29 18:32:25,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520149909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:32:25,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:32:25,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 18:32:25,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334804250] [2023-08-29 18:32:25,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:32:25,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:32:25,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:32:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:32:25,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:32:25,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 499 out of 845 [2023-08-29 18:32:25,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 286 transitions, 620 flow. Second operand has 2 states, 2 states have (on average 499.5) internal successors, (999), 2 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:32:25,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:32:25,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 499 of 845 [2023-08-29 18:32:25,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand