./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_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_87-lists_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 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --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 18:34:21,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:34:21,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:34:21,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:34:21,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:34:21,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:34:21,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:34:21,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:34:21,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:34:21,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:34:21,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:34:21,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:34:21,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:34:21,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:34:21,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:34:21,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:34:21,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:34:21,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:34:21,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:34:21,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:34:21,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:34:21,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:34:21,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:34:21,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:34:21,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:34:21,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:34:21,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:34:21,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:34:21,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:34:21,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:34:21,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:34:21,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:34:21,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:34:21,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:34:21,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:34:21,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:34:21,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:34:21,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:34:21,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:34:21,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:34:21,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:34:21,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:34:21,286 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:34:21,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:34:21,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:34:21,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:34:21,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:34:21,289 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:34:21,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:34:21,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:34:21,289 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:34:21,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:34:21,290 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:34:21,290 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:34:21,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:34:21,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:34:21,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:34:21,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:34:21,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:34:21,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:34:21,291 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:34:21,291 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:34:21,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:34:21,292 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:34:21,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:34:21,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:34:21,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:34:21,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:34:21,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:34:21,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:34:21,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:34:21,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:34:21,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:34:21,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:34:21,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:34:21,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:34:21,294 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:34:21,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:34:21,294 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:34:21,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:34:21,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:34:21,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:34:21,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:34:21,562 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:34:21,562 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:34:21,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-29 18:34:22,508 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:34:22,738 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:34:22,738 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-29 18:34:22,754 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec56ef50/0b2f4112743f4403a34fb11a672c7bb3/FLAGcb3b34a48 [2023-08-29 18:34:22,762 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec56ef50/0b2f4112743f4403a34fb11a672c7bb3 [2023-08-29 18:34:22,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:34:22,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:34:22,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:34:22,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:34:22,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:34:22,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:34:22" (1/1) ... [2023-08-29 18:34:22,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709f939a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:22, skipping insertion in model container [2023-08-29 18:34:22,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:34:22" (1/1) ... [2023-08-29 18:34:22,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:34:22,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:34:23,062 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_87-lists_racefree.i[47038,47051] [2023-08-29 18:34:23,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:34:23,162 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:34:23,192 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_87-lists_racefree.i[47038,47051] [2023-08-29 18:34:23,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:34:23,257 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:34:23,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23 WrapperNode [2023-08-29 18:34:23,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:34:23,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:34:23,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:34:23,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:34:23,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23" (1/1) ... [2023-08-29 18:34:23,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23" (1/1) ... [2023-08-29 18:34:23,306 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 341 [2023-08-29 18:34:23,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:34:23,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:34:23,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:34:23,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:34:23,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23" (1/1) ... [2023-08-29 18:34:23,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23" (1/1) ... [2023-08-29 18:34:23,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23" (1/1) ... [2023-08-29 18:34:23,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23" (1/1) ... [2023-08-29 18:34:23,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23" (1/1) ... [2023-08-29 18:34:23,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23" (1/1) ... [2023-08-29 18:34:23,343 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23" (1/1) ... [2023-08-29 18:34:23,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23" (1/1) ... [2023-08-29 18:34:23,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:34:23,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:34:23,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:34:23,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:34:23,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23" (1/1) ... [2023-08-29 18:34:23,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:34:23,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:34:23,426 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 18:34:23,493 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 18:34:23,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:34:23,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 18:34:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 18:34:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 18:34:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:34:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:34:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 18:34:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 18:34:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:34:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:34:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 18:34:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:34:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 18:34:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:34:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:34:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:34:23,537 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 18:34:23,674 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:34:23,676 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:34:24,147 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:34:24,157 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:34:24,157 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-29 18:34:24,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:34:24 BoogieIcfgContainer [2023-08-29 18:34:24,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:34:24,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:34:24,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:34:24,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:34:24,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:34:22" (1/3) ... [2023-08-29 18:34:24,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1883ba11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:34:24, skipping insertion in model container [2023-08-29 18:34:24,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:34:23" (2/3) ... [2023-08-29 18:34:24,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1883ba11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:34:24, skipping insertion in model container [2023-08-29 18:34:24,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:34:24" (3/3) ... [2023-08-29 18:34:24,166 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-08-29 18:34:24,171 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:34:24,176 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:34:24,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-08-29 18:34:24,177 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:34:24,300 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 18:34:24,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 360 transitions, 742 flow [2023-08-29 18:34:24,496 INFO L130 PetriNetUnfolder]: 54/645 cut-off events. [2023-08-29 18:34:24,496 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 18:34:24,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 645 events. 54/645 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3035 event pairs, 0 based on Foata normal form. 0/550 useless extension candidates. Maximal degree in co-relation 323. Up to 8 conditions per place. [2023-08-29 18:34:24,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 360 transitions, 742 flow [2023-08-29 18:34:24,515 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 360 transitions, 742 flow [2023-08-29 18:34:24,518 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:34:24,525 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 360 transitions, 742 flow [2023-08-29 18:34:24,526 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 360 transitions, 742 flow [2023-08-29 18:34:24,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 360 transitions, 742 flow [2023-08-29 18:34:24,591 INFO L130 PetriNetUnfolder]: 54/645 cut-off events. [2023-08-29 18:34:24,592 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-29 18:34:24,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 645 events. 54/645 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3035 event pairs, 0 based on Foata normal form. 0/550 useless extension candidates. Maximal degree in co-relation 323. Up to 8 conditions per place. [2023-08-29 18:34:24,624 INFO L119 LiptonReduction]: Number of co-enabled transitions 45596 [2023-08-29 18:34:47,889 INFO L134 LiptonReduction]: Checked pairs total: 229925 [2023-08-29 18:34:47,890 INFO L136 LiptonReduction]: Total number of compositions: 224 [2023-08-29 18:34:47,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:34:47,903 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;@79c36625, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:34:47,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-29 18:34:47,905 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-29 18:34:47,906 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:34:47,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:34:47,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 18:34:47,921 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 31 more)] === [2023-08-29 18:34:47,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:34:47,925 INFO L85 PathProgramCache]: Analyzing trace with hash 41471, now seen corresponding path program 1 times [2023-08-29 18:34:47,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:34:47,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055868387] [2023-08-29 18:34:47,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:34:47,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:34:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:34:48,054 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 18:34:48,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:34:48,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055868387] [2023-08-29 18:34:48,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055868387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:34:48,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:34:48,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 18:34:48,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742856559] [2023-08-29 18:34:48,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:34:48,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:34:48,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:34:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:34:48,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:34:48,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 584 [2023-08-29 18:34:48,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 167 transitions, 356 flow. Second operand has 2 states, 2 states have (on average 337.0) internal successors, (674), 2 states have internal predecessors, (674), 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 18:34:48,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:34:48,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 584 [2023-08-29 18:34:48,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:34:50,072 INFO L130 PetriNetUnfolder]: 6989/18312 cut-off events. [2023-08-29 18:34:50,073 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-08-29 18:34:50,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29222 conditions, 18312 events. 6989/18312 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 176715 event pairs, 6594 based on Foata normal form. 620/16966 useless extension candidates. Maximal degree in co-relation 27536. Up to 10776 conditions per place. [2023-08-29 18:34:50,172 INFO L137 encePairwiseOnDemand]: 570/584 looper letters, 61 selfloop transitions, 0 changer transitions 0/153 dead transitions. [2023-08-29 18:34:50,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 450 flow [2023-08-29 18:34:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:34:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:34:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 747 transitions. [2023-08-29 18:34:50,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.639554794520548 [2023-08-29 18:34:50,186 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 747 transitions. [2023-08-29 18:34:50,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 747 transitions. [2023-08-29 18:34:50,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:34:50,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 747 transitions. [2023-08-29 18:34:50,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 373.5) internal successors, (747), 2 states have internal predecessors, (747), 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 18:34:50,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 584.0) internal successors, (1752), 3 states have internal predecessors, (1752), 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 18:34:50,216 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 584.0) internal successors, (1752), 3 states have internal predecessors, (1752), 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 18:34:50,217 INFO L175 Difference]: Start difference. First operand has 154 places, 167 transitions, 356 flow. Second operand 2 states and 747 transitions. [2023-08-29 18:34:50,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 450 flow [2023-08-29 18:34:50,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 450 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:34:50,226 INFO L231 Difference]: Finished difference. Result has 152 places, 153 transitions, 328 flow [2023-08-29 18:34:50,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=152, PETRI_TRANSITIONS=153} [2023-08-29 18:34:50,235 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, -2 predicate places. [2023-08-29 18:34:50,235 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 153 transitions, 328 flow [2023-08-29 18:34:50,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 337.0) internal successors, (674), 2 states have internal predecessors, (674), 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 18:34:50,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:34:50,238 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 18:34:50,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:34:50,239 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 31 more)] === [2023-08-29 18:34:50,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:34:50,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1692941802, now seen corresponding path program 1 times [2023-08-29 18:34:50,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:34:50,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029832787] [2023-08-29 18:34:50,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:34:50,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:34:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:34:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:34:50,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:34:50,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029832787] [2023-08-29 18:34:50,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029832787] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:34:50,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:34:50,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:34:50,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367679630] [2023-08-29 18:34:50,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:34:50,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:34:50,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:34:50,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:34:50,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:34:50,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 584 [2023-08-29 18:34:50,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 153 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 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 18:34:50,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:34:50,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 584 [2023-08-29 18:34:50,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:34:51,864 INFO L130 PetriNetUnfolder]: 6989/18313 cut-off events. [2023-08-29 18:34:51,865 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-08-29 18:34:51,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29225 conditions, 18313 events. 6989/18313 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 176709 event pairs, 6594 based on Foata normal form. 0/16347 useless extension candidates. Maximal degree in co-relation 29220. Up to 10776 conditions per place. [2023-08-29 18:34:51,943 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 60 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-08-29 18:34:51,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 454 flow [2023-08-29 18:34:51,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:34:51,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:34:51,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1059 transitions. [2023-08-29 18:34:51,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6044520547945206 [2023-08-29 18:34:51,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1059 transitions. [2023-08-29 18:34:51,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1059 transitions. [2023-08-29 18:34:51,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:34:51,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1059 transitions. [2023-08-29 18:34:51,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 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 18:34:51,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 18:34:51,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 18:34:51,952 INFO L175 Difference]: Start difference. First operand has 152 places, 153 transitions, 328 flow. Second operand 3 states and 1059 transitions. [2023-08-29 18:34:51,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 454 flow [2023-08-29 18:34:51,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:34:51,957 INFO L231 Difference]: Finished difference. Result has 155 places, 154 transitions, 340 flow [2023-08-29 18:34:51,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=155, PETRI_TRANSITIONS=154} [2023-08-29 18:34:51,958 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 1 predicate places. [2023-08-29 18:34:51,958 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 340 flow [2023-08-29 18:34:51,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 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 18:34:51,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:34:51,959 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:34:51,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:34:51,959 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-29 18:34:51,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:34:51,960 INFO L85 PathProgramCache]: Analyzing trace with hash -410117987, now seen corresponding path program 1 times [2023-08-29 18:34:51,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:34:51,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325402450] [2023-08-29 18:34:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:34:51,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:34:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:34:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:34:52,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:34:52,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325402450] [2023-08-29 18:34:52,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325402450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:34:52,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883069477] [2023-08-29 18:34:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:34:52,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:34:52,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:34:52,034 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:34:52,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 18:34:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:34:52,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:34:52,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:34:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:34:52,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:34:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:34:52,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883069477] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:34:52,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:34:52,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-29 18:34:52,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446265546] [2023-08-29 18:34:52,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:34:52,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:34:52,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:34:52,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:34:52,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:34:52,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 584 [2023-08-29 18:34:52,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 154 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 332.5) internal successors, (1995), 6 states have internal predecessors, (1995), 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 18:34:52,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:34:52,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 584 [2023-08-29 18:34:52,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:34:53,956 INFO L130 PetriNetUnfolder]: 6989/18316 cut-off events. [2023-08-29 18:34:53,957 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-08-29 18:34:54,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29241 conditions, 18316 events. 6989/18316 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 176757 event pairs, 6594 based on Foata normal form. 0/16350 useless extension candidates. Maximal degree in co-relation 29234. Up to 10776 conditions per place. [2023-08-29 18:34:54,056 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 60 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2023-08-29 18:34:54,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 157 transitions, 482 flow [2023-08-29 18:34:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:34:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:34:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2054 transitions. [2023-08-29 18:34:54,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5861872146118722 [2023-08-29 18:34:54,061 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2054 transitions. [2023-08-29 18:34:54,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2054 transitions. [2023-08-29 18:34:54,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:34:54,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2054 transitions. [2023-08-29 18:34:54,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 342.3333333333333) internal successors, (2054), 6 states have internal predecessors, (2054), 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 18:34:54,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 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 18:34:54,073 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 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 18:34:54,073 INFO L175 Difference]: Start difference. First operand has 155 places, 154 transitions, 340 flow. Second operand 6 states and 2054 transitions. [2023-08-29 18:34:54,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 157 transitions, 482 flow [2023-08-29 18:34:54,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 157 transitions, 478 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:34:54,078 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 372 flow [2023-08-29 18:34:54,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2023-08-29 18:34:54,079 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 8 predicate places. [2023-08-29 18:34:54,079 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 372 flow [2023-08-29 18:34:54,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 332.5) internal successors, (1995), 6 states have internal predecessors, (1995), 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 18:34:54,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:34:54,080 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-29 18:34:54,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 18:34:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:34:54,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-29 18:34:54,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:34:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash -857550166, now seen corresponding path program 2 times [2023-08-29 18:34:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:34:54,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452765763] [2023-08-29 18:34:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:34:54,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:34:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:34:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:34:54,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:34:54,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452765763] [2023-08-29 18:34:54,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452765763] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:34:54,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203841668] [2023-08-29 18:34:54,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:34:54,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:34:54,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:34:54,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:34:54,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 18:34:54,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:34:54,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:34:54,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:34:54,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:34:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:34:54,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:34:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:34:54,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203841668] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:34:54,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:34:54,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-29 18:34:54,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735157030] [2023-08-29 18:34:54,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:34:54,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 18:34:54,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:34:54,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 18:34:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-29 18:34:54,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 584 [2023-08-29 18:34:54,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 372 flow. Second operand has 12 states, 12 states have (on average 332.25) internal successors, (3987), 12 states have internal predecessors, (3987), 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 18:34:54,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:34:54,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 584 [2023-08-29 18:34:54,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:34:56,578 INFO L130 PetriNetUnfolder]: 6989/18322 cut-off events. [2023-08-29 18:34:56,578 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2023-08-29 18:34:56,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29278 conditions, 18322 events. 6989/18322 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 176685 event pairs, 6594 based on Foata normal form. 6/16363 useless extension candidates. Maximal degree in co-relation 29268. Up to 10776 conditions per place. [2023-08-29 18:34:56,642 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 60 selfloop transitions, 11 changer transitions 0/163 dead transitions. [2023-08-29 18:34:56,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 163 transitions, 550 flow [2023-08-29 18:34:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:34:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:34:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4049 transitions. [2023-08-29 18:34:56,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777682648401826 [2023-08-29 18:34:56,649 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4049 transitions. [2023-08-29 18:34:56,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4049 transitions. [2023-08-29 18:34:56,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:34:56,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4049 transitions. [2023-08-29 18:34:56,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 337.4166666666667) internal successors, (4049), 12 states have internal predecessors, (4049), 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 18:34:56,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 584.0) internal successors, (7592), 13 states have internal predecessors, (7592), 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 18:34:56,665 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 584.0) internal successors, (7592), 13 states have internal predecessors, (7592), 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 18:34:56,665 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 372 flow. Second operand 12 states and 4049 transitions. [2023-08-29 18:34:56,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 163 transitions, 550 flow [2023-08-29 18:34:56,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 163 transitions, 536 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:34:56,669 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 442 flow [2023-08-29 18:34:56,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=442, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2023-08-29 18:34:56,670 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 24 predicate places. [2023-08-29 18:34:56,670 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 442 flow [2023-08-29 18:34:56,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 332.25) internal successors, (3987), 12 states have internal predecessors, (3987), 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 18:34:56,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:34:56,671 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-29 18:34:56,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-29 18:34:56,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-29 18:34:56,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-29 18:34:56,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:34:56,877 INFO L85 PathProgramCache]: Analyzing trace with hash -659292726, now seen corresponding path program 3 times [2023-08-29 18:34:56,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:34:56,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292019470] [2023-08-29 18:34:56,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:34:56,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:34:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:34:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:34:57,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:34:57,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292019470] [2023-08-29 18:34:57,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292019470] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:34:57,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166729666] [2023-08-29 18:34:57,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 18:34:57,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:34:57,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:34:57,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:34:57,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Killed by 15