./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.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_77-tricky_address4_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:28:20,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:28:20,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:28:20,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:28:20,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:28:20,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:28:20,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:28:20,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:28:20,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:28:20,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:28:20,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:28:20,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:28:20,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:28:20,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:28:20,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:28:20,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:28:20,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:28:20,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:28:20,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:28:20,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:28:20,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:28:20,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:28:20,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:28:20,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:28:20,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:28:20,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:28:20,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:28:20,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:28:20,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:28:20,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:28:20,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:28:20,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:28:20,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:28:20,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:28:20,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:28:20,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:28:20,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:28:20,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:28:20,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:28:20,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:28:20,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:28:20,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:28:20,979 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:28:20,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:28:20,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:28:20,980 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:28:20,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:28:20,981 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:28:20,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:28:20,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:28:20,981 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:28:20,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:28:20,982 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:28:20,982 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:28:20,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:28:20,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:28:20,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:28:20,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:28:20,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:28:20,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:28:20,983 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:28:20,983 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:28:20,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:28:20,983 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:28:20,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:28:20,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:28:20,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:28:20,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:28:20,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:28:20,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:28:20,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:28:20,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:28:20,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:28:20,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:28:20,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:28:20,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:28:20,985 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:28:20,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:28:20,985 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:28:20,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:28:21,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:28:21,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:28:21,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:28:21,307 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:28:21,308 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:28:21,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-08-29 18:28:22,427 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:28:22,673 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:28:22,673 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-08-29 18:28:22,688 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f4d146c6/1ff68a458a0e4770bc4f5035eee4914b/FLAG170514b61 [2023-08-29 18:28:22,710 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f4d146c6/1ff68a458a0e4770bc4f5035eee4914b [2023-08-29 18:28:22,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:28:22,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:28:22,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:28:22,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:28:22,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:28:22,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:28:22" (1/1) ... [2023-08-29 18:28:22,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a64af9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:22, skipping insertion in model container [2023-08-29 18:28:22,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:28:22" (1/1) ... [2023-08-29 18:28:22,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:28:22,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:28:23,122 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_77-tricky_address4_racing.i[41323,41336] [2023-08-29 18:28:23,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:28:23,198 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:28:23,235 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_77-tricky_address4_racing.i[41323,41336] [2023-08-29 18:28:23,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:28:23,320 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:28:23,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23 WrapperNode [2023-08-29 18:28:23,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:28:23,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:28:23,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:28:23,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:28:23,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23" (1/1) ... [2023-08-29 18:28:23,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23" (1/1) ... [2023-08-29 18:28:23,408 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 256 [2023-08-29 18:28:23,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:28:23,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:28:23,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:28:23,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:28:23,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23" (1/1) ... [2023-08-29 18:28:23,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23" (1/1) ... [2023-08-29 18:28:23,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23" (1/1) ... [2023-08-29 18:28:23,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23" (1/1) ... [2023-08-29 18:28:23,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23" (1/1) ... [2023-08-29 18:28:23,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23" (1/1) ... [2023-08-29 18:28:23,474 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23" (1/1) ... [2023-08-29 18:28:23,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23" (1/1) ... [2023-08-29 18:28:23,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:28:23,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:28:23,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:28:23,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:28:23,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23" (1/1) ... [2023-08-29 18:28:23,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:28:23,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:23,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 18:28:23,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 18:28:23,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:28:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:28:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:28:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:28:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:28:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:28:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:28:23,557 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:28:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:28:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:28:23,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:28:23,559 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:28:23,717 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:28:23,719 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:28:24,087 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:28:24,097 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:28:24,097 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-29 18:28:24,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:28:24 BoogieIcfgContainer [2023-08-29 18:28:24,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:28:24,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:28:24,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:28:24,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:28:24,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:28:22" (1/3) ... [2023-08-29 18:28:24,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aeac8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:28:24, skipping insertion in model container [2023-08-29 18:28:24,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:23" (2/3) ... [2023-08-29 18:28:24,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aeac8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:28:24, skipping insertion in model container [2023-08-29 18:28:24,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:28:24" (3/3) ... [2023-08-29 18:28:24,106 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2023-08-29 18:28:24,114 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:28:24,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:28:24,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 18:28:24,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:28:24,229 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:28:24,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 265 transitions, 538 flow [2023-08-29 18:28:24,376 INFO L130 PetriNetUnfolder]: 45/374 cut-off events. [2023-08-29 18:28:24,376 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-29 18:28:24,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 374 events. 45/374 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1491 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 218. Up to 8 conditions per place. [2023-08-29 18:28:24,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 265 transitions, 538 flow [2023-08-29 18:28:24,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 265 transitions, 538 flow [2023-08-29 18:28:24,401 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:28:24,410 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 265 transitions, 538 flow [2023-08-29 18:28:24,413 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 265 transitions, 538 flow [2023-08-29 18:28:24,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 265 transitions, 538 flow [2023-08-29 18:28:24,483 INFO L130 PetriNetUnfolder]: 45/374 cut-off events. [2023-08-29 18:28:24,483 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-29 18:28:24,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 374 events. 45/374 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1491 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 218. Up to 8 conditions per place. [2023-08-29 18:28:24,501 INFO L119 LiptonReduction]: Number of co-enabled transitions 23920 [2023-08-29 18:28:27,477 INFO L134 LiptonReduction]: Checked pairs total: 95023 [2023-08-29 18:28:27,477 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-29 18:28:27,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:28:27,514 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;@15b9386d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:28:27,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 18:28:27,524 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-29 18:28:27,524 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:28:27,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:27,525 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 18:28:27,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:28:27,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:27,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2490206, now seen corresponding path program 1 times [2023-08-29 18:28:27,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:27,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469988357] [2023-08-29 18:28:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:27,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:27,857 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 18:28:27,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:27,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469988357] [2023-08-29 18:28:27,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469988357] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:27,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:28:27,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:28:27,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841612818] [2023-08-29 18:28:27,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:27,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:27,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:27,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:27,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:28:27,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 428 [2023-08-29 18:28:27,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 132 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 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 18:28:27,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:27,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 428 [2023-08-29 18:28:27,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:28,183 INFO L130 PetriNetUnfolder]: 399/1539 cut-off events. [2023-08-29 18:28:28,183 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2023-08-29 18:28:28,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 1539 events. 399/1539 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10819 event pairs, 357 based on Foata normal form. 160/1537 useless extension candidates. Maximal degree in co-relation 2226. Up to 779 conditions per place. [2023-08-29 18:28:28,192 INFO L137 encePairwiseOnDemand]: 404/428 looper letters, 43 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-29 18:28:28,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 322 flow [2023-08-29 18:28:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:28:28,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:28:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 757 transitions. [2023-08-29 18:28:28,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.589563862928349 [2023-08-29 18:28:28,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 757 transitions. [2023-08-29 18:28:28,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 757 transitions. [2023-08-29 18:28:28,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:28,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 757 transitions. [2023-08-29 18:28:28,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 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 18:28:28,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 428.0) internal successors, (1712), 4 states have internal predecessors, (1712), 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 18:28:28,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 428.0) internal successors, (1712), 4 states have internal predecessors, (1712), 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 18:28:28,223 INFO L175 Difference]: Start difference. First operand has 110 places, 132 transitions, 272 flow. Second operand 3 states and 757 transitions. [2023-08-29 18:28:28,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 322 flow [2023-08-29 18:28:28,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:28:28,229 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 242 flow [2023-08-29 18:28:28,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=428, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2023-08-29 18:28:28,234 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 3 predicate places. [2023-08-29 18:28:28,234 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 242 flow [2023-08-29 18:28:28,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 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 18:28:28,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:28,235 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:28,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:28:28,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:28:28,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1899965582, now seen corresponding path program 1 times [2023-08-29 18:28:28,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:28,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022598493] [2023-08-29 18:28:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:28,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:28,325 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 18:28:28,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022598493] [2023-08-29 18:28:28,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022598493] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475618483] [2023-08-29 18:28:28,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:28,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:28,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:28,333 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 18:28:28,342 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 18:28:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:28,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:28:28,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:28,439 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 18:28:28,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:28:28,455 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 18:28:28,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475618483] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:28:28,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:28:28,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:28:28,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313987810] [2023-08-29 18:28:28,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:28:28,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:28:28,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:28,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:28:28,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:28:28,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 428 [2023-08-29 18:28:28,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 230.57142857142858) internal successors, (1614), 7 states have internal predecessors, (1614), 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 18:28:28,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:28,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 428 [2023-08-29 18:28:28,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:28,803 INFO L130 PetriNetUnfolder]: 399/1542 cut-off events. [2023-08-29 18:28:28,803 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2023-08-29 18:28:28,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 1542 events. 399/1542 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10871 event pairs, 357 based on Foata normal form. 0/1380 useless extension candidates. Maximal degree in co-relation 2330. Up to 779 conditions per place. [2023-08-29 18:28:28,809 INFO L137 encePairwiseOnDemand]: 425/428 looper letters, 43 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-08-29 18:28:28,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 350 flow [2023-08-29 18:28:28,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:28:28,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:28:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1425 transitions. [2023-08-29 18:28:28,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5549065420560748 [2023-08-29 18:28:28,813 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1425 transitions. [2023-08-29 18:28:28,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1425 transitions. [2023-08-29 18:28:28,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:28,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1425 transitions. [2023-08-29 18:28:28,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 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 18:28:28,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 428.0) internal successors, (2996), 7 states have internal predecessors, (2996), 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 18:28:28,822 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 428.0) internal successors, (2996), 7 states have internal predecessors, (2996), 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 18:28:28,822 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 242 flow. Second operand 6 states and 1425 transitions. [2023-08-29 18:28:28,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 350 flow [2023-08-29 18:28:28,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 346 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:28,826 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 274 flow [2023-08-29 18:28:28,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=428, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2023-08-29 18:28:28,827 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 10 predicate places. [2023-08-29 18:28:28,827 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 274 flow [2023-08-29 18:28:28,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 230.57142857142858) internal successors, (1614), 7 states have internal predecessors, (1614), 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 18:28:28,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:28,828 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-29 18:28:28,834 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 18:28:29,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:29,034 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:28:29,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:29,035 INFO L85 PathProgramCache]: Analyzing trace with hash 977560670, now seen corresponding path program 2 times [2023-08-29 18:28:29,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:29,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697317966] [2023-08-29 18:28:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:29,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:29,169 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 18:28:29,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:29,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697317966] [2023-08-29 18:28:29,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697317966] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:29,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128363680] [2023-08-29 18:28:29,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:28:29,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:29,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:29,172 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 18:28:29,174 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 18:28:29,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:28:29,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:28:29,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:28:29,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:29,274 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 18:28:29,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:28:29,328 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 18:28:29,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128363680] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:28:29,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:28:29,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:28:29,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005590806] [2023-08-29 18:28:29,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:28:29,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:28:29,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:29,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:28:29,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:28:29,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 428 [2023-08-29 18:28:29,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 274 flow. Second operand has 13 states, 13 states have (on average 230.30769230769232) internal successors, (2994), 13 states have internal predecessors, (2994), 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 18:28:29,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:29,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 428 [2023-08-29 18:28:29,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:29,658 INFO L130 PetriNetUnfolder]: 399/1548 cut-off events. [2023-08-29 18:28:29,658 INFO L131 PetriNetUnfolder]: For 24/25 co-relation queries the response was YES. [2023-08-29 18:28:29,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2379 conditions, 1548 events. 399/1548 cut-off events. For 24/25 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10818 event pairs, 357 based on Foata normal form. 6/1393 useless extension candidates. Maximal degree in co-relation 2321. Up to 779 conditions per place. [2023-08-29 18:28:29,666 INFO L137 encePairwiseOnDemand]: 425/428 looper letters, 43 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2023-08-29 18:28:29,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 121 transitions, 418 flow [2023-08-29 18:28:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:28:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:28:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2808 transitions. [2023-08-29 18:28:29,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467289719626168 [2023-08-29 18:28:29,674 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2808 transitions. [2023-08-29 18:28:29,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2808 transitions. [2023-08-29 18:28:29,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:29,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2808 transitions. [2023-08-29 18:28:29,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 234.0) internal successors, (2808), 12 states have internal predecessors, (2808), 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 18:28:29,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 428.0) internal successors, (5564), 13 states have internal predecessors, (5564), 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 18:28:29,703 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 428.0) internal successors, (5564), 13 states have internal predecessors, (5564), 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 18:28:29,703 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 274 flow. Second operand 12 states and 2808 transitions. [2023-08-29 18:28:29,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 121 transitions, 418 flow [2023-08-29 18:28:29,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 404 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:29,707 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 344 flow [2023-08-29 18:28:29,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=428, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=344, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2023-08-29 18:28:29,708 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 26 predicate places. [2023-08-29 18:28:29,708 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 344 flow [2023-08-29 18:28:29,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 230.30769230769232) internal successors, (2994), 13 states have internal predecessors, (2994), 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 18:28:29,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:29,710 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-29 18:28:29,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 18:28:29,915 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,SelfDestructingSolverStorable2 [2023-08-29 18:28:29,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:28:29,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:29,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2137502754, now seen corresponding path program 3 times [2023-08-29 18:28:29,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:29,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563054699] [2023-08-29 18:28:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:29,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:28:29,938 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:28:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:28:29,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:28:29,979 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:28:29,980 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-29 18:28:29,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-29 18:28:29,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-29 18:28:29,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-08-29 18:28:29,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-29 18:28:29,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-29 18:28:29,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-29 18:28:29,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-29 18:28:29,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-29 18:28:29,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-29 18:28:29,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-29 18:28:29,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-29 18:28:29,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-29 18:28:29,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-29 18:28:29,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-29 18:28:29,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-29 18:28:29,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-29 18:28:29,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:28:29,984 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-29 18:28:29,986 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:28:29,986 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:28:30,049 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:28:30,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 371 transitions, 760 flow [2023-08-29 18:28:30,165 INFO L130 PetriNetUnfolder]: 75/619 cut-off events. [2023-08-29 18:28:30,166 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-29 18:28:30,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 619 events. 75/619 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3067 event pairs, 0 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 376. Up to 12 conditions per place. [2023-08-29 18:28:30,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 371 transitions, 760 flow [2023-08-29 18:28:30,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 371 transitions, 760 flow [2023-08-29 18:28:30,177 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:28:30,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 371 transitions, 760 flow [2023-08-29 18:28:30,178 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 371 transitions, 760 flow [2023-08-29 18:28:30,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 371 transitions, 760 flow [2023-08-29 18:28:30,254 INFO L130 PetriNetUnfolder]: 75/619 cut-off events. [2023-08-29 18:28:30,254 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-29 18:28:30,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 619 events. 75/619 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3067 event pairs, 0 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 376. Up to 12 conditions per place. [2023-08-29 18:28:30,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 71760 [2023-08-29 18:28:33,703 INFO L134 LiptonReduction]: Checked pairs total: 285766 [2023-08-29 18:28:33,704 INFO L136 LiptonReduction]: Total number of compositions: 224 [2023-08-29 18:28:33,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:28:33,706 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;@15b9386d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:28:33,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 18:28:33,712 INFO L130 PetriNetUnfolder]: 14/73 cut-off events. [2023-08-29 18:28:33,712 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:28:33,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:33,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:33,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:33,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:33,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1381707071, now seen corresponding path program 1 times [2023-08-29 18:28:33,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:33,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400827019] [2023-08-29 18:28:33,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:33,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:33,739 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 18:28:33,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400827019] [2023-08-29 18:28:33,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400827019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:33,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:28:33,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:28:33,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881483162] [2023-08-29 18:28:33,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:33,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:33,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:33,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:33,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:28:33,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 595 [2023-08-29 18:28:33,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 194 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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 18:28:33,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:33,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 595 [2023-08-29 18:28:33,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:37,199 INFO L130 PetriNetUnfolder]: 14691/34656 cut-off events. [2023-08-29 18:28:37,199 INFO L131 PetriNetUnfolder]: For 206/278 co-relation queries the response was YES. [2023-08-29 18:28:37,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56033 conditions, 34656 events. 14691/34656 cut-off events. For 206/278 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 372716 event pairs, 13600 based on Foata normal form. 4486/35914 useless extension candidates. Maximal degree in co-relation 20584. Up to 21259 conditions per place. [2023-08-29 18:28:37,438 INFO L137 encePairwiseOnDemand]: 560/595 looper letters, 62 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-08-29 18:28:37,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 472 flow [2023-08-29 18:28:37,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:28:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:28:37,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1060 transitions. [2023-08-29 18:28:37,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5938375350140056 [2023-08-29 18:28:37,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1060 transitions. [2023-08-29 18:28:37,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1060 transitions. [2023-08-29 18:28:37,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:37,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1060 transitions. [2023-08-29 18:28:37,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 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 18:28:37,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 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 18:28:37,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 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 18:28:37,449 INFO L175 Difference]: Start difference. First operand has 161 places, 194 transitions, 406 flow. Second operand 3 states and 1060 transitions. [2023-08-29 18:28:37,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 472 flow [2023-08-29 18:28:37,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 163 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:28:37,455 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 354 flow [2023-08-29 18:28:37,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=164, PETRI_TRANSITIONS=163} [2023-08-29 18:28:37,457 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2023-08-29 18:28:37,457 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 354 flow [2023-08-29 18:28:37,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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 18:28:37,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:37,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:37,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:28:37,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:37,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:37,461 INFO L85 PathProgramCache]: Analyzing trace with hash 892254629, now seen corresponding path program 1 times [2023-08-29 18:28:37,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:37,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012202591] [2023-08-29 18:28:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:37,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:28:37,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:37,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012202591] [2023-08-29 18:28:37,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012202591] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:37,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073361043] [2023-08-29 18:28:37,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:37,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:37,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:37,521 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 18:28:37,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 18:28:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:37,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 18:28:37,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 18:28:37,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:28:37,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073361043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:37,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:28:37,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 18:28:37,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109428037] [2023-08-29 18:28:37,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:37,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:37,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:37,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:28:37,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 595 [2023-08-29 18:28:37,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 163 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 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 18:28:37,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:37,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 595 [2023-08-29 18:28:37,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:40,195 INFO L130 PetriNetUnfolder]: 14345/34778 cut-off events. [2023-08-29 18:28:40,196 INFO L131 PetriNetUnfolder]: For 188/226 co-relation queries the response was YES. [2023-08-29 18:28:40,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56161 conditions, 34778 events. 14345/34778 cut-off events. For 188/226 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 382463 event pairs, 6494 based on Foata normal form. 0/31503 useless extension candidates. Maximal degree in co-relation 56148. Up to 21223 conditions per place. [2023-08-29 18:28:40,417 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 81 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2023-08-29 18:28:40,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 182 transitions, 558 flow [2023-08-29 18:28:40,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:28:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:28:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1046 transitions. [2023-08-29 18:28:40,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5859943977591037 [2023-08-29 18:28:40,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1046 transitions. [2023-08-29 18:28:40,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1046 transitions. [2023-08-29 18:28:40,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:40,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1046 transitions. [2023-08-29 18:28:40,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 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 18:28:40,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 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 18:28:40,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 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 18:28:40,603 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 354 flow. Second operand 3 states and 1046 transitions. [2023-08-29 18:28:40,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 182 transitions, 558 flow [2023-08-29 18:28:40,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 182 transitions, 554 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:40,610 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 362 flow [2023-08-29 18:28:40,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2023-08-29 18:28:40,614 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2023-08-29 18:28:40,614 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 362 flow [2023-08-29 18:28:40,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 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 18:28:40,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:40,615 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:40,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 18:28:40,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:40,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:40,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:40,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1032659485, now seen corresponding path program 1 times [2023-08-29 18:28:40,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:40,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979766417] [2023-08-29 18:28:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:40,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:40,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:40,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979766417] [2023-08-29 18:28:40,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979766417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:40,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403791127] [2023-08-29 18:28:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:40,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:40,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:40,872 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:28:40,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 18:28:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:40,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:28:40,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:40,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:28:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:40,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403791127] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:28:40,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:28:40,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:28:40,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156641888] [2023-08-29 18:28:40,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:28:40,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:28:40,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:28:40,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:28:41,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 595 [2023-08-29 18:28:41,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 321.7142857142857) internal successors, (2252), 7 states have internal predecessors, (2252), 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 18:28:41,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:41,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 595 [2023-08-29 18:28:41,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:43,640 INFO L130 PetriNetUnfolder]: 14723/35024 cut-off events. [2023-08-29 18:28:43,640 INFO L131 PetriNetUnfolder]: For 870/885 co-relation queries the response was YES. [2023-08-29 18:28:43,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57099 conditions, 35024 events. 14723/35024 cut-off events. For 870/885 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 379412 event pairs, 13600 based on Foata normal form. 3/32050 useless extension candidates. Maximal degree in co-relation 57071. Up to 21242 conditions per place. [2023-08-29 18:28:43,830 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 63 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2023-08-29 18:28:43,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 167 transitions, 510 flow [2023-08-29 18:28:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:28:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:28:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1990 transitions. [2023-08-29 18:28:43,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574229691876751 [2023-08-29 18:28:43,836 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1990 transitions. [2023-08-29 18:28:43,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1990 transitions. [2023-08-29 18:28:43,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:43,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1990 transitions. [2023-08-29 18:28:43,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 331.6666666666667) internal successors, (1990), 6 states have internal predecessors, (1990), 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 18:28:43,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 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 18:28:43,847 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 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 18:28:43,847 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 362 flow. Second operand 6 states and 1990 transitions. [2023-08-29 18:28:43,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 167 transitions, 510 flow [2023-08-29 18:28:43,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 167 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:43,850 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 396 flow [2023-08-29 18:28:43,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2023-08-29 18:28:43,852 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 12 predicate places. [2023-08-29 18:28:43,852 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 396 flow [2023-08-29 18:28:43,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 321.7142857142857) internal successors, (2252), 7 states have internal predecessors, (2252), 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 18:28:43,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:43,854 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:28:43,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 18:28:44,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:44,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:44,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:44,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1747093071, now seen corresponding path program 2 times [2023-08-29 18:28:44,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:44,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103298787] [2023-08-29 18:28:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:44,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:44,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:44,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103298787] [2023-08-29 18:28:44,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103298787] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:44,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297038471] [2023-08-29 18:28:44,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:28:44,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:44,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:44,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:28:44,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 18:28:44,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:28:44,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:28:44,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:28:44,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:44,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:28:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:44,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297038471] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:28:44,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:28:44,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:28:44,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684395320] [2023-08-29 18:28:44,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:28:44,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:28:44,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:44,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:28:44,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:28:44,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 595 [2023-08-29 18:28:44,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 396 flow. Second operand has 13 states, 13 states have (on average 321.38461538461536) internal successors, (4178), 13 states have internal predecessors, (4178), 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 18:28:44,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:44,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 595 [2023-08-29 18:28:44,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:47,093 INFO L130 PetriNetUnfolder]: 14723/35030 cut-off events. [2023-08-29 18:28:47,094 INFO L131 PetriNetUnfolder]: For 904/919 co-relation queries the response was YES. [2023-08-29 18:28:47,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57120 conditions, 35030 events. 14723/35030 cut-off events. For 904/919 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 379156 event pairs, 13600 based on Foata normal form. 6/32059 useless extension candidates. Maximal degree in co-relation 57060. Up to 21242 conditions per place. [2023-08-29 18:28:47,275 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 63 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2023-08-29 18:28:47,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 173 transitions, 580 flow [2023-08-29 18:28:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:28:47,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:28:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3919 transitions. [2023-08-29 18:28:47,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488795518207283 [2023-08-29 18:28:47,284 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3919 transitions. [2023-08-29 18:28:47,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3919 transitions. [2023-08-29 18:28:47,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:47,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3919 transitions. [2023-08-29 18:28:47,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 326.5833333333333) internal successors, (3919), 12 states have internal predecessors, (3919), 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 18:28:47,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 595.0) internal successors, (7735), 13 states have internal predecessors, (7735), 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 18:28:47,311 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 595.0) internal successors, (7735), 13 states have internal predecessors, (7735), 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 18:28:47,311 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 396 flow. Second operand 12 states and 3919 transitions. [2023-08-29 18:28:47,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 173 transitions, 580 flow [2023-08-29 18:28:47,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 173 transitions, 566 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:47,316 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 466 flow [2023-08-29 18:28:47,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=466, PETRI_PLACES=189, PETRI_TRANSITIONS=173} [2023-08-29 18:28:47,317 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 28 predicate places. [2023-08-29 18:28:47,317 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 466 flow [2023-08-29 18:28:47,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 321.38461538461536) internal successors, (4178), 13 states have internal predecessors, (4178), 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 18:28:47,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:47,319 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:28:47,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 18:28:47,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:47,524 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:47,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1259707855, now seen corresponding path program 3 times [2023-08-29 18:28:47,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:47,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398422703] [2023-08-29 18:28:47,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:47,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:28:47,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:28:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:28:47,588 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:28:47,588 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:28:47,588 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 18:28:47,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 18:28:47,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 18:28:47,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 18:28:47,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 18:28:47,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 18:28:47,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 18:28:47,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 18:28:47,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 18:28:47,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 18:28:47,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 18:28:47,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 18:28:47,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 18:28:47,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 18:28:47,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 18:28:47,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 18:28:47,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 18:28:47,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 18:28:47,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 18:28:47,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 18:28:47,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 18:28:47,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 18:28:47,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 18:28:47,593 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-29 18:28:47,594 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:28:47,594 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:28:47,658 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:28:47,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 477 transitions, 984 flow [2023-08-29 18:28:47,981 INFO L130 PetriNetUnfolder]: 110/907 cut-off events. [2023-08-29 18:28:47,982 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-29 18:28:47,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 907 events. 110/907 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4958 event pairs, 1 based on Foata normal form. 0/750 useless extension candidates. Maximal degree in co-relation 627. Up to 16 conditions per place. [2023-08-29 18:28:47,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 477 transitions, 984 flow [2023-08-29 18:28:48,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 425 places, 477 transitions, 984 flow [2023-08-29 18:28:48,007 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:28:48,007 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 425 places, 477 transitions, 984 flow [2023-08-29 18:28:48,007 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 425 places, 477 transitions, 984 flow [2023-08-29 18:28:48,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 477 transitions, 984 flow [2023-08-29 18:28:48,145 INFO L130 PetriNetUnfolder]: 110/907 cut-off events. [2023-08-29 18:28:48,146 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-29 18:28:48,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 907 events. 110/907 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4958 event pairs, 1 based on Foata normal form. 0/750 useless extension candidates. Maximal degree in co-relation 627. Up to 16 conditions per place. [2023-08-29 18:28:48,209 INFO L119 LiptonReduction]: Number of co-enabled transitions 141024 [2023-08-29 18:28:52,175 INFO L134 LiptonReduction]: Checked pairs total: 564994 [2023-08-29 18:28:52,175 INFO L136 LiptonReduction]: Total number of compositions: 290 [2023-08-29 18:28:52,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:28:52,178 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;@15b9386d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:28:52,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-29 18:28:52,184 INFO L130 PetriNetUnfolder]: 15/85 cut-off events. [2023-08-29 18:28:52,185 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:28:52,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:52,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:52,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:28:52,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:52,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1889808579, now seen corresponding path program 1 times [2023-08-29 18:28:52,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:52,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365976255] [2023-08-29 18:28:52,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:52,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:52,292 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 18:28:52,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:52,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365976255] [2023-08-29 18:28:52,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365976255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:52,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:28:52,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:28:52,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91648400] [2023-08-29 18:28:52,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:52,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:52,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:52,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:28:52,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 767 [2023-08-29 18:28:52,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 251 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 413.6666666666667) internal successors, (1241), 3 states have internal predecessors, (1241), 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 18:28:52,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:52,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 767 [2023-08-29 18:28:52,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:29:57,378 INFO L130 PetriNetUnfolder]: 403445/757641 cut-off events. [2023-08-29 18:29:57,378 INFO L131 PetriNetUnfolder]: For 5874/7267 co-relation queries the response was YES. [2023-08-29 18:30:00,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276847 conditions, 757641 events. 403445/757641 cut-off events. For 5874/7267 co-relation queries the response was YES. Maximal size of possible extension queue 15346. Compared 9849779 event pairs, 377214 based on Foata normal form. 100370/788780 useless extension candidates. Maximal degree in co-relation 226808. Up to 516526 conditions per place. [2023-08-29 18:30:03,368 INFO L137 encePairwiseOnDemand]: 724/767 looper letters, 81 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2023-08-29 18:30:03,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 212 transitions, 620 flow [2023-08-29 18:30:03,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:30:03,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:30:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1360 transitions. [2023-08-29 18:30:03,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910473707083876 [2023-08-29 18:30:03,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1360 transitions. [2023-08-29 18:30:03,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1360 transitions. [2023-08-29 18:30:03,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:30:03,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1360 transitions. [2023-08-29 18:30:03,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 453.3333333333333) internal successors, (1360), 3 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:03,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:03,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:03,381 INFO L175 Difference]: Start difference. First operand has 210 places, 251 transitions, 532 flow. Second operand 3 states and 1360 transitions. [2023-08-29 18:30:03,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 212 transitions, 620 flow [2023-08-29 18:30:03,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 212 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:30:03,388 INFO L231 Difference]: Finished difference. Result has 213 places, 212 transitions, 464 flow [2023-08-29 18:30:03,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=213, PETRI_TRANSITIONS=212} [2023-08-29 18:30:03,390 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 3 predicate places. [2023-08-29 18:30:03,390 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 212 transitions, 464 flow [2023-08-29 18:30:03,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.6666666666667) internal successors, (1241), 3 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:03,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:30:03,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:30:03,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 18:30:03,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:30:03,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:30:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1550021488, now seen corresponding path program 1 times [2023-08-29 18:30:03,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:30:03,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452194449] [2023-08-29 18:30:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:30:03,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:30:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:30:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:30:03,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:30:03,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452194449] [2023-08-29 18:30:03,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452194449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:30:03,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658541398] [2023-08-29 18:30:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:30:03,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:30:03,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:30:03,435 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:30:03,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 18:30:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:30:03,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 18:30:03,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:30:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 18:30:03,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:30:03,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658541398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:30:03,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:30:03,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 18:30:03,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189071467] [2023-08-29 18:30:03,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:30:03,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:30:03,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:30:03,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:30:03,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:30:03,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 767 [2023-08-29 18:30:03,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 212 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:03,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:30:03,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 767 [2023-08-29 18:30:03,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:31:08,685 INFO L130 PetriNetUnfolder]: 404148/762719 cut-off events. [2023-08-29 18:31:08,686 INFO L131 PetriNetUnfolder]: For 5896/6615 co-relation queries the response was YES. [2023-08-29 18:31:11,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281915 conditions, 762719 events. 404148/762719 cut-off events. For 5896/6615 co-relation queries the response was YES. Maximal size of possible extension queue 15518. Compared 9982428 event pairs, 339022 based on Foata normal form. 0/692949 useless extension candidates. Maximal degree in co-relation 1281901. Up to 516490 conditions per place. [2023-08-29 18:31:14,776 INFO L137 encePairwiseOnDemand]: 764/767 looper letters, 100 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2023-08-29 18:31:14,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 231 transitions, 706 flow [2023-08-29 18:31:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:31:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:31:14,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1338 transitions. [2023-08-29 18:31:14,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5814863102998696 [2023-08-29 18:31:14,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1338 transitions. [2023-08-29 18:31:14,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1338 transitions. [2023-08-29 18:31:14,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:31:14,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1338 transitions. [2023-08-29 18:31:14,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 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 18:31:14,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 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 18:31:14,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 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 18:31:14,787 INFO L175 Difference]: Start difference. First operand has 213 places, 212 transitions, 464 flow. Second operand 3 states and 1338 transitions. [2023-08-29 18:31:14,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 231 transitions, 706 flow [2023-08-29 18:31:14,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 231 transitions, 702 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:31:14,793 INFO L231 Difference]: Finished difference. Result has 215 places, 213 transitions, 472 flow [2023-08-29 18:31:14,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=215, PETRI_TRANSITIONS=213} [2023-08-29 18:31:14,794 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 5 predicate places. [2023-08-29 18:31:14,795 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 213 transitions, 472 flow [2023-08-29 18:31:14,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 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 18:31:14,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:31:14,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:31:14,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-29 18:31:15,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:31:15,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:31:15,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:31:15,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1819851275, now seen corresponding path program 1 times [2023-08-29 18:31:15,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:31:15,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23182831] [2023-08-29 18:31:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:31:15,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:31:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:31:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:31:15,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:31:15,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23182831] [2023-08-29 18:31:15,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23182831] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:31:15,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256869672] [2023-08-29 18:31:15,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:31:15,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:31:15,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:31:15,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:31:15,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 18:31:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:31:15,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:31:15,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:31:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:31:15,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:31:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:31:15,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256869672] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:31:15,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:31:15,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:31:15,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559415131] [2023-08-29 18:31:15,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:31:15,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:31:15,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:31:15,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:31:15,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:31:15,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 767 [2023-08-29 18:31:15,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 213 transitions, 472 flow. Second operand has 7 states, 7 states have (on average 412.85714285714283) internal successors, (2890), 7 states have internal predecessors, (2890), 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 18:31:15,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:31:15,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 767 [2023-08-29 18:31:15,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:32:24,151 INFO L130 PetriNetUnfolder]: 404127/759081 cut-off events. [2023-08-29 18:32:24,151 INFO L131 PetriNetUnfolder]: For 18149/19166 co-relation queries the response was YES. [2023-08-29 18:32:27,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290649 conditions, 759081 events. 404127/759081 cut-off events. For 18149/19166 co-relation queries the response was YES. Maximal size of possible extension queue 15446. Compared 9886838 event pairs, 377214 based on Foata normal form. 3/696462 useless extension candidates. Maximal degree in co-relation 1290620. Up to 516509 conditions per place. [2023-08-29 18:32:30,447 INFO L137 encePairwiseOnDemand]: 764/767 looper letters, 82 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2023-08-29 18:32:30,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 216 transitions, 658 flow [2023-08-29 18:32:30,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:32:30,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:32:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2555 transitions. [2023-08-29 18:32:30,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555193394176445 [2023-08-29 18:32:30,452 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2555 transitions. [2023-08-29 18:32:30,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2555 transitions. [2023-08-29 18:32:30,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:32:30,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2555 transitions. [2023-08-29 18:32:30,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 425.8333333333333) internal successors, (2555), 6 states have internal predecessors, (2555), 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 18:32:30,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 767.0) internal successors, (5369), 7 states have internal predecessors, (5369), 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 18:32:30,465 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 767.0) internal successors, (5369), 7 states have internal predecessors, (5369), 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 18:32:30,465 INFO L175 Difference]: Start difference. First operand has 215 places, 213 transitions, 472 flow. Second operand 6 states and 2555 transitions. [2023-08-29 18:32:30,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 216 transitions, 658 flow [2023-08-29 18:32:30,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 216 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:32:30,485 INFO L231 Difference]: Finished difference. Result has 222 places, 216 transitions, 506 flow [2023-08-29 18:32:30,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=222, PETRI_TRANSITIONS=216} [2023-08-29 18:32:30,486 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 12 predicate places. [2023-08-29 18:32:30,486 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 216 transitions, 506 flow [2023-08-29 18:32:30,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 412.85714285714283) internal successors, (2890), 7 states have internal predecessors, (2890), 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 18:32:30,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:32:30,487 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:32:30,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-29 18:32:30,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:32:30,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:32:30,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:32:30,692 INFO L85 PathProgramCache]: Analyzing trace with hash -850986860, now seen corresponding path program 2 times [2023-08-29 18:32:30,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:32:30,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813517629] [2023-08-29 18:32:30,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:32:30,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:32:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:32:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:32:30,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:32:30,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813517629] [2023-08-29 18:32:30,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813517629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:32:30,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746889457] [2023-08-29 18:32:30,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:32:30,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:32:30,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:32:30,936 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:32:30,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 18:32:31,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 18:32:31,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:32:31,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 18:32:31,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:32:31,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 18:32:31,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 18:32:31,119 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:32:31,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 18:32:31,161 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:32:31,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 18:32:31,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 18:32:31,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:32:31,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746889457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:32:31,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:32:31,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-29 18:32:31,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485236581] [2023-08-29 18:32:31,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:32:31,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:32:31,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:32:31,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:32:31,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-29 18:32:31,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 767 [2023-08-29 18:32:31,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 216 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 363.1666666666667) internal successors, (2179), 6 states have internal predecessors, (2179), 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 18:32:31,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:32:31,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 767 [2023-08-29 18:32:31,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand