./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --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 18:25:50,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:25:50,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:25:50,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:25:50,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:25:50,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:25:50,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:25:50,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:25:50,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:25:50,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:25:50,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:25:50,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:25:50,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:25:50,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:25:50,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:25:50,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:25:50,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:25:50,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:25:50,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:25:50,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:25:50,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:25:50,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:25:50,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:25:50,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:25:50,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:25:50,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:25:50,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:25:50,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:25:50,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:25:50,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:25:50,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:25:50,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:25:50,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:25:50,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:25:50,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:25:50,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:25:50,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:25:50,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:25:50,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:25:50,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:25:50,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:25:50,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:25:50,588 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:25:50,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:25:50,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:25:50,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:25:50,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:25:50,591 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:25:50,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:25:50,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:25:50,591 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:25:50,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:25:50,592 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:25:50,593 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:25:50,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:25:50,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:25:50,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:25:50,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:25:50,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:25:50,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:25:50,594 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:25:50,594 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:25:50,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:25:50,594 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:25:50,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:25:50,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:25:50,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:25:50,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:25:50,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:25:50,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:25:50,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:25:50,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:25:50,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:25:50,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:25:50,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:25:50,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:25:50,597 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:25:50,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:25:50,597 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:25:50,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:25:50,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:25:50,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:25:50,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:25:50,896 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:25:50,897 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:25:50,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-08-29 18:25:52,167 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:25:52,419 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:25:52,420 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-08-29 18:25:52,433 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ff309bc/be6071598ff5418f9afb48c2b5bb08ce/FLAG544ecab69 [2023-08-29 18:25:52,449 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ff309bc/be6071598ff5418f9afb48c2b5bb08ce [2023-08-29 18:25:52,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:25:52,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:25:52,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:25:52,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:25:52,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:25:52,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:52,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666f1047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52, skipping insertion in model container [2023-08-29 18:25:52,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:52,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:25:52,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:25:52,810 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_70-funloop_racefree.i[41323,41336] [2023-08-29 18:25:52,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:25:52,871 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:25:52,907 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_70-funloop_racefree.i[41323,41336] [2023-08-29 18:25:52,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:25:52,991 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:25:52,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52 WrapperNode [2023-08-29 18:25:52,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:25:52,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:25:52,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:25:52,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:25:52,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:53,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:53,065 INFO L138 Inliner]: procedures = 271, calls = 31, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 258 [2023-08-29 18:25:53,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:25:53,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:25:53,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:25:53,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:25:53,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:53,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:53,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:53,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:53,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:53,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:53,130 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:53,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:53,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:25:53,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:25:53,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:25:53,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:25:53,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52" (1/1) ... [2023-08-29 18:25:53,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:25:53,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:25:53,187 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 18:25:53,204 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 18:25:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:25:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:25:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:25:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:25:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:25:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:25:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:25:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:25:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:25:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:25:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:25:53,222 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 18:25:53,354 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:25:53,356 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:25:53,747 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:25:53,755 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:25:53,761 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-08-29 18:25:53,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:25:53 BoogieIcfgContainer [2023-08-29 18:25:53,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:25:53,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:25:53,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:25:53,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:25:53,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:25:52" (1/3) ... [2023-08-29 18:25:53,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233e9d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:25:53, skipping insertion in model container [2023-08-29 18:25:53,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:52" (2/3) ... [2023-08-29 18:25:53,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233e9d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:25:53, skipping insertion in model container [2023-08-29 18:25:53,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:25:53" (3/3) ... [2023-08-29 18:25:53,772 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2023-08-29 18:25:53,780 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:25:53,788 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:25:53,788 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 18:25:53,789 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:25:53,895 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:25:53,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 264 transitions, 536 flow [2023-08-29 18:25:54,109 INFO L130 PetriNetUnfolder]: 49/384 cut-off events. [2023-08-29 18:25:54,109 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:25:54,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 384 events. 49/384 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1614 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-08-29 18:25:54,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 264 transitions, 536 flow [2023-08-29 18:25:54,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 264 transitions, 536 flow [2023-08-29 18:25:54,135 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:25:54,150 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 264 transitions, 536 flow [2023-08-29 18:25:54,154 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 264 transitions, 536 flow [2023-08-29 18:25:54,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 264 transitions, 536 flow [2023-08-29 18:25:54,219 INFO L130 PetriNetUnfolder]: 49/384 cut-off events. [2023-08-29 18:25:54,219 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:25:54,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 384 events. 49/384 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1614 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-08-29 18:25:54,238 INFO L119 LiptonReduction]: Number of co-enabled transitions 25704 [2023-08-29 18:25:56,881 INFO L134 LiptonReduction]: Checked pairs total: 99655 [2023-08-29 18:25:56,881 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-29 18:25:56,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:25:56,911 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;@1698c663, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:25:56,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 18:25:56,917 INFO L130 PetriNetUnfolder]: 8/37 cut-off events. [2023-08-29 18:25:56,917 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:25:56,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:56,918 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 18:25:56,919 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 18:25:56,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:56,923 INFO L85 PathProgramCache]: Analyzing trace with hash -535676327, now seen corresponding path program 1 times [2023-08-29 18:25:56,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:56,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295630641] [2023-08-29 18:25:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:56,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:57,192 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 18:25:57,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:57,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295630641] [2023-08-29 18:25:57,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295630641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:25:57,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:25:57,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:25:57,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005289038] [2023-08-29 18:25:57,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:25:57,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:25:57,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:57,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:25:57,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:25:57,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 420 [2023-08-29 18:25:57,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 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 18:25:57,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:57,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 420 [2023-08-29 18:25:57,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:57,586 INFO L130 PetriNetUnfolder]: 483/1714 cut-off events. [2023-08-29 18:25:57,587 INFO L131 PetriNetUnfolder]: For 3/8 co-relation queries the response was YES. [2023-08-29 18:25:57,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 1714 events. 483/1714 cut-off events. For 3/8 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11756 event pairs, 396 based on Foata normal form. 211/1749 useless extension candidates. Maximal degree in co-relation 2521. Up to 903 conditions per place. [2023-08-29 18:25:57,595 INFO L137 encePairwiseOnDemand]: 395/420 looper letters, 47 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-08-29 18:25:57,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 338 flow [2023-08-29 18:25:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:25:57,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:25:57,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-08-29 18:25:57,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6023809523809524 [2023-08-29 18:25:57,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-08-29 18:25:57,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-08-29 18:25:57,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:25:57,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-08-29 18:25:57,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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 18:25:57,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 18:25:57,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 18:25:57,635 INFO L175 Difference]: Start difference. First operand has 112 places, 137 transitions, 282 flow. Second operand 3 states and 759 transitions. [2023-08-29 18:25:57,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 338 flow [2023-08-29 18:25:57,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 116 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:25:57,642 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 250 flow [2023-08-29 18:25:57,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2023-08-29 18:25:57,647 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2023-08-29 18:25:57,647 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 250 flow [2023-08-29 18:25:57,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 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 18:25:57,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:57,648 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:25:57,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:25:57,650 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 18:25:57,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:57,658 INFO L85 PathProgramCache]: Analyzing trace with hash 224378928, now seen corresponding path program 1 times [2023-08-29 18:25:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:57,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843352491] [2023-08-29 18:25:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:57,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:57,755 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 18:25:57,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:57,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843352491] [2023-08-29 18:25:57,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843352491] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:25:57,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957147345] [2023-08-29 18:25:57,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:57,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:25:57,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:25:57,759 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 18:25:57,783 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 18:25:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:57,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:25:57,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:25:57,871 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 18:25:57,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:25:57,885 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 18:25:57,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957147345] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:25:57,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:25:57,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:25:57,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980710077] [2023-08-29 18:25:57,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:25:57,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:25:57,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:57,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:25:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:25:57,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 420 [2023-08-29 18:25:57,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 229.57142857142858) internal successors, (1607), 7 states have internal predecessors, (1607), 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 18:25:57,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:57,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 420 [2023-08-29 18:25:57,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:58,195 INFO L130 PetriNetUnfolder]: 483/1717 cut-off events. [2023-08-29 18:25:58,196 INFO L131 PetriNetUnfolder]: For 3/8 co-relation queries the response was YES. [2023-08-29 18:25:58,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2641 conditions, 1717 events. 483/1717 cut-off events. For 3/8 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11800 event pairs, 396 based on Foata normal form. 0/1541 useless extension candidates. Maximal degree in co-relation 2629. Up to 903 conditions per place. [2023-08-29 18:25:58,204 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 47 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2023-08-29 18:25:58,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 119 transitions, 366 flow [2023-08-29 18:25:58,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:25:58,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:25:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1423 transitions. [2023-08-29 18:25:58,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5646825396825397 [2023-08-29 18:25:58,209 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1423 transitions. [2023-08-29 18:25:58,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1423 transitions. [2023-08-29 18:25:58,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:25:58,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1423 transitions. [2023-08-29 18:25:58,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.16666666666666) internal successors, (1423), 6 states have internal predecessors, (1423), 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 18:25:58,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 18:25:58,220 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 18:25:58,221 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 250 flow. Second operand 6 states and 1423 transitions. [2023-08-29 18:25:58,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 119 transitions, 366 flow [2023-08-29 18:25:58,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 119 transitions, 362 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:25:58,225 INFO L231 Difference]: Finished difference. Result has 122 places, 119 transitions, 282 flow [2023-08-29 18:25:58,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2023-08-29 18:25:58,226 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 10 predicate places. [2023-08-29 18:25:58,226 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 282 flow [2023-08-29 18:25:58,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 229.57142857142858) internal successors, (1607), 7 states have internal predecessors, (1607), 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 18:25:58,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:58,228 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-29 18:25:58,241 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 18:25:58,434 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 18:25:58,434 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 18:25:58,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:58,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1976535015, now seen corresponding path program 2 times [2023-08-29 18:25:58,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:58,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070278538] [2023-08-29 18:25:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:58,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:58,545 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 18:25:58,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:58,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070278538] [2023-08-29 18:25:58,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070278538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:25:58,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930421991] [2023-08-29 18:25:58,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:25:58,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:25:58,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:25:58,550 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 18:25:58,560 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 18:25:58,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:25:58,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:25:58,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:25:58,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:25:58,650 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 18:25:58,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:25:58,706 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 18:25:58,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930421991] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:25:58,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:25:58,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:25:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916515425] [2023-08-29 18:25:58,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:25:58,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:25:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:58,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:25:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:25:58,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 420 [2023-08-29 18:25:58,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 229.30769230769232) internal successors, (2981), 13 states have internal predecessors, (2981), 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 18:25:58,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:58,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 420 [2023-08-29 18:25:58,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:59,067 INFO L130 PetriNetUnfolder]: 483/1723 cut-off events. [2023-08-29 18:25:59,067 INFO L131 PetriNetUnfolder]: For 23/28 co-relation queries the response was YES. [2023-08-29 18:25:59,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2678 conditions, 1723 events. 483/1723 cut-off events. For 23/28 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11800 event pairs, 396 based on Foata normal form. 6/1554 useless extension candidates. Maximal degree in co-relation 2620. Up to 903 conditions per place. [2023-08-29 18:25:59,076 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 47 selfloop transitions, 11 changer transitions 0/125 dead transitions. [2023-08-29 18:25:59,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 125 transitions, 434 flow [2023-08-29 18:25:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:25:59,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:25:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2800 transitions. [2023-08-29 18:25:59,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-29 18:25:59,108 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2800 transitions. [2023-08-29 18:25:59,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2800 transitions. [2023-08-29 18:25:59,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:25:59,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2800 transitions. [2023-08-29 18:25:59,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 233.33333333333334) internal successors, (2800), 12 states have internal predecessors, (2800), 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 18:25:59,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 420.0) internal successors, (5460), 13 states have internal predecessors, (5460), 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 18:25:59,128 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 420.0) internal successors, (5460), 13 states have internal predecessors, (5460), 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 18:25:59,128 INFO L175 Difference]: Start difference. First operand has 122 places, 119 transitions, 282 flow. Second operand 12 states and 2800 transitions. [2023-08-29 18:25:59,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 125 transitions, 434 flow [2023-08-29 18:25:59,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 125 transitions, 420 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:25:59,135 INFO L231 Difference]: Finished difference. Result has 138 places, 125 transitions, 352 flow [2023-08-29 18:25:59,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=352, PETRI_PLACES=138, PETRI_TRANSITIONS=125} [2023-08-29 18:25:59,137 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 26 predicate places. [2023-08-29 18:25:59,137 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 125 transitions, 352 flow [2023-08-29 18:25:59,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 229.30769230769232) internal successors, (2981), 13 states have internal predecessors, (2981), 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 18:25:59,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:59,143 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-29 18:25:59,149 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 18:25:59,349 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 18:25:59,350 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 18:25:59,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:59,350 INFO L85 PathProgramCache]: Analyzing trace with hash -911101767, now seen corresponding path program 3 times [2023-08-29 18:25:59,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:59,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984291228] [2023-08-29 18:25:59,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:59,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:25:59,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:25:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:25:59,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:25:59,444 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:25:59,444 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-29 18:25:59,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-29 18:25:59,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-29 18:25:59,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-08-29 18:25:59,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-29 18:25:59,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-29 18:25:59,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-29 18:25:59,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-29 18:25:59,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-29 18:25:59,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-29 18:25:59,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-29 18:25:59,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-29 18:25:59,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-29 18:25:59,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-29 18:25:59,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-29 18:25:59,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-29 18:25:59,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-29 18:25:59,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:25:59,453 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-29 18:25:59,455 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:25:59,456 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:25:59,508 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:25:59,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 368 transitions, 754 flow [2023-08-29 18:25:59,633 INFO L130 PetriNetUnfolder]: 82/638 cut-off events. [2023-08-29 18:25:59,633 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:25:59,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 638 events. 82/638 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3356 event pairs, 0 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 386. Up to 12 conditions per place. [2023-08-29 18:25:59,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 368 transitions, 754 flow [2023-08-29 18:25:59,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 368 transitions, 754 flow [2023-08-29 18:25:59,650 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:25:59,650 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 368 transitions, 754 flow [2023-08-29 18:25:59,651 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 368 transitions, 754 flow [2023-08-29 18:25:59,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 368 transitions, 754 flow [2023-08-29 18:25:59,747 INFO L130 PetriNetUnfolder]: 82/638 cut-off events. [2023-08-29 18:25:59,747 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:25:59,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 638 events. 82/638 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3356 event pairs, 0 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 386. Up to 12 conditions per place. [2023-08-29 18:25:59,781 INFO L119 LiptonReduction]: Number of co-enabled transitions 74460 [2023-08-29 18:26:02,858 INFO L134 LiptonReduction]: Checked pairs total: 295516 [2023-08-29 18:26:02,859 INFO L136 LiptonReduction]: Total number of compositions: 212 [2023-08-29 18:26:02,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:26:02,861 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;@1698c663, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:26:02,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 18:26:02,867 INFO L130 PetriNetUnfolder]: 13/65 cut-off events. [2023-08-29 18:26:02,867 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:02,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:02,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:02,868 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 18:26:02,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:02,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1593160855, now seen corresponding path program 1 times [2023-08-29 18:26:02,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:02,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731656219] [2023-08-29 18:26:02,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:02,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:02,915 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 18:26:02,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:02,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731656219] [2023-08-29 18:26:02,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731656219] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:02,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:26:02,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:26:02,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105653688] [2023-08-29 18:26:02,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:02,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:02,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:26:02,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 580 [2023-08-29 18:26:02,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 200 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 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 18:26:02,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:02,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 580 [2023-08-29 18:26:02,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:06,720 INFO L130 PetriNetUnfolder]: 18367/41883 cut-off events. [2023-08-29 18:26:06,720 INFO L131 PetriNetUnfolder]: For 236/310 co-relation queries the response was YES. [2023-08-29 18:26:06,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68043 conditions, 41883 events. 18367/41883 cut-off events. For 236/310 co-relation queries the response was YES. Maximal size of possible extension queue 981. Compared 441606 event pairs, 15876 based on Foata normal form. 4544/41662 useless extension candidates. Maximal degree in co-relation 30382. Up to 26041 conditions per place. [2023-08-29 18:26:07,085 INFO L137 encePairwiseOnDemand]: 545/580 looper letters, 68 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2023-08-29 18:26:07,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 169 transitions, 496 flow [2023-08-29 18:26:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:26:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:26:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1057 transitions. [2023-08-29 18:26:07,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6074712643678161 [2023-08-29 18:26:07,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1057 transitions. [2023-08-29 18:26:07,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1057 transitions. [2023-08-29 18:26:07,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:07,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1057 transitions. [2023-08-29 18:26:07,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.3333333333333) internal successors, (1057), 3 states have internal predecessors, (1057), 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 18:26:07,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 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 18:26:07,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 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 18:26:07,096 INFO L175 Difference]: Start difference. First operand has 164 places, 200 transitions, 418 flow. Second operand 3 states and 1057 transitions. [2023-08-29 18:26:07,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 169 transitions, 496 flow [2023-08-29 18:26:07,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 169 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:26:07,103 INFO L231 Difference]: Finished difference. Result has 167 places, 169 transitions, 366 flow [2023-08-29 18:26:07,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=167, PETRI_TRANSITIONS=169} [2023-08-29 18:26:07,106 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 3 predicate places. [2023-08-29 18:26:07,106 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 169 transitions, 366 flow [2023-08-29 18:26:07,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 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 18:26:07,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:07,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:07,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:26:07,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:07,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:07,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1051172520, now seen corresponding path program 1 times [2023-08-29 18:26:07,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:07,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533345661] [2023-08-29 18:26:07,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:07,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:07,158 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 18:26:07,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:07,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533345661] [2023-08-29 18:26:07,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533345661] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:07,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542152036] [2023-08-29 18:26:07,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:07,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:07,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:07,161 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 18:26:07,170 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 18:26:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:07,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 18:26:07,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:07,247 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 18:26:07,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:26:07,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542152036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:07,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:26:07,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 18:26:07,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747564339] [2023-08-29 18:26:07,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:07,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:07,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:07,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:07,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:26:07,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 580 [2023-08-29 18:26:07,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 169 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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 18:26:07,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:07,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 580 [2023-08-29 18:26:07,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:10,137 INFO L130 PetriNetUnfolder]: 17982/41292 cut-off events. [2023-08-29 18:26:10,138 INFO L131 PetriNetUnfolder]: For 298/438 co-relation queries the response was YES. [2023-08-29 18:26:10,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67462 conditions, 41292 events. 17982/41292 cut-off events. For 298/438 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 440493 event pairs, 7596 based on Foata normal form. 0/36713 useless extension candidates. Maximal degree in co-relation 67449. Up to 26001 conditions per place. [2023-08-29 18:26:10,379 INFO L137 encePairwiseOnDemand]: 577/580 looper letters, 89 selfloop transitions, 2 changer transitions 0/190 dead transitions. [2023-08-29 18:26:10,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 190 transitions, 590 flow [2023-08-29 18:26:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:26:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:26:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1045 transitions. [2023-08-29 18:26:10,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6005747126436781 [2023-08-29 18:26:10,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1045 transitions. [2023-08-29 18:26:10,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1045 transitions. [2023-08-29 18:26:10,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:10,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1045 transitions. [2023-08-29 18:26:10,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 348.3333333333333) internal successors, (1045), 3 states have internal predecessors, (1045), 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 18:26:10,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 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 18:26:10,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 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 18:26:10,388 INFO L175 Difference]: Start difference. First operand has 167 places, 169 transitions, 366 flow. Second operand 3 states and 1045 transitions. [2023-08-29 18:26:10,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 190 transitions, 590 flow [2023-08-29 18:26:10,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 190 transitions, 586 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:10,394 INFO L231 Difference]: Finished difference. Result has 169 places, 170 transitions, 374 flow [2023-08-29 18:26:10,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=169, PETRI_TRANSITIONS=170} [2023-08-29 18:26:10,397 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 5 predicate places. [2023-08-29 18:26:10,398 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 170 transitions, 374 flow [2023-08-29 18:26:10,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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 18:26:10,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:10,398 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:10,404 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 18:26:10,604 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 18:26:10,604 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 18:26:10,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash -424605468, now seen corresponding path program 1 times [2023-08-29 18:26:10,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:10,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467775374] [2023-08-29 18:26:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:10,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:10,649 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 18:26:10,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:10,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467775374] [2023-08-29 18:26:10,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467775374] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:10,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414071834] [2023-08-29 18:26:10,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:10,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:10,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:10,654 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 18:26:10,656 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 18:26:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:10,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:26:10,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:10,744 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 18:26:10,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:26:10,764 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 18:26:10,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414071834] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:26:10,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:26:10,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:26:10,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436558110] [2023-08-29 18:26:10,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:26:10,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:26:10,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:10,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:26:10,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:26:10,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 580 [2023-08-29 18:26:10,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 170 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 318.7142857142857) internal successors, (2231), 7 states have internal predecessors, (2231), 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 18:26:10,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:10,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 580 [2023-08-29 18:26:10,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:13,799 INFO L130 PetriNetUnfolder]: 18400/42202 cut-off events. [2023-08-29 18:26:13,799 INFO L131 PetriNetUnfolder]: For 1018/1096 co-relation queries the response was YES. [2023-08-29 18:26:13,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69135 conditions, 42202 events. 18400/42202 cut-off events. For 1018/1096 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 446719 event pairs, 15876 based on Foata normal form. 3/37718 useless extension candidates. Maximal degree in co-relation 69107. Up to 26022 conditions per place. [2023-08-29 18:26:13,979 INFO L137 encePairwiseOnDemand]: 577/580 looper letters, 69 selfloop transitions, 5 changer transitions 0/173 dead transitions. [2023-08-29 18:26:13,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 173 transitions, 534 flow [2023-08-29 18:26:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:26:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:26:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1978 transitions. [2023-08-29 18:26:13,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683908045977012 [2023-08-29 18:26:13,984 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1978 transitions. [2023-08-29 18:26:13,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1978 transitions. [2023-08-29 18:26:13,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:13,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1978 transitions. [2023-08-29 18:26:13,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 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 18:26:13,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 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 18:26:13,995 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 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 18:26:13,995 INFO L175 Difference]: Start difference. First operand has 169 places, 170 transitions, 374 flow. Second operand 6 states and 1978 transitions. [2023-08-29 18:26:13,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 173 transitions, 534 flow [2023-08-29 18:26:13,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:13,999 INFO L231 Difference]: Finished difference. Result has 176 places, 173 transitions, 408 flow [2023-08-29 18:26:13,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=176, PETRI_TRANSITIONS=173} [2023-08-29 18:26:14,000 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 12 predicate places. [2023-08-29 18:26:14,000 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 173 transitions, 408 flow [2023-08-29 18:26:14,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 318.7142857142857) internal successors, (2231), 7 states have internal predecessors, (2231), 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 18:26:14,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:14,001 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:26:14,009 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 18:26:14,208 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 18:26:14,209 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 18:26:14,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1725751133, now seen corresponding path program 2 times [2023-08-29 18:26:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:14,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199493056] [2023-08-29 18:26:14,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:14,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:14,295 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 18:26:14,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:14,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199493056] [2023-08-29 18:26:14,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199493056] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:14,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725268761] [2023-08-29 18:26:14,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:26:14,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:14,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:14,297 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 18:26:14,298 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 18:26:14,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:26:14,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:26:14,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:26:14,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:14,402 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 18:26:14,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:26:14,450 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 18:26:14,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725268761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:26:14,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:26:14,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:26:14,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123151192] [2023-08-29 18:26:14,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:26:14,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:26:14,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:14,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:26:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:26:14,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 580 [2023-08-29 18:26:14,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 173 transitions, 408 flow. Second operand has 13 states, 13 states have (on average 318.38461538461536) internal successors, (4139), 13 states have internal predecessors, (4139), 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 18:26:14,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:14,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 580 [2023-08-29 18:26:14,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:17,827 INFO L130 PetriNetUnfolder]: 18400/42208 cut-off events. [2023-08-29 18:26:17,827 INFO L131 PetriNetUnfolder]: For 1052/1130 co-relation queries the response was YES. [2023-08-29 18:26:17,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69155 conditions, 42208 events. 18400/42208 cut-off events. For 1052/1130 co-relation queries the response was YES. Maximal size of possible extension queue 992. Compared 446639 event pairs, 15876 based on Foata normal form. 6/37727 useless extension candidates. Maximal degree in co-relation 69095. Up to 26022 conditions per place. [2023-08-29 18:26:18,039 INFO L137 encePairwiseOnDemand]: 577/580 looper letters, 69 selfloop transitions, 11 changer transitions 0/179 dead transitions. [2023-08-29 18:26:18,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 179 transitions, 604 flow [2023-08-29 18:26:18,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:26:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:26:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3889 transitions. [2023-08-29 18:26:18,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558764367816092 [2023-08-29 18:26:18,047 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3889 transitions. [2023-08-29 18:26:18,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3889 transitions. [2023-08-29 18:26:18,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:18,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3889 transitions. [2023-08-29 18:26:18,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 324.0833333333333) internal successors, (3889), 12 states have internal predecessors, (3889), 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 18:26:18,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 580.0) internal successors, (7540), 13 states have internal predecessors, (7540), 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 18:26:18,069 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 580.0) internal successors, (7540), 13 states have internal predecessors, (7540), 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 18:26:18,070 INFO L175 Difference]: Start difference. First operand has 176 places, 173 transitions, 408 flow. Second operand 12 states and 3889 transitions. [2023-08-29 18:26:18,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 179 transitions, 604 flow [2023-08-29 18:26:18,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 179 transitions, 590 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:18,075 INFO L231 Difference]: Finished difference. Result has 192 places, 179 transitions, 478 flow [2023-08-29 18:26:18,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=478, PETRI_PLACES=192, PETRI_TRANSITIONS=179} [2023-08-29 18:26:18,076 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 28 predicate places. [2023-08-29 18:26:18,076 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 179 transitions, 478 flow [2023-08-29 18:26:18,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 318.38461538461536) internal successors, (4139), 13 states have internal predecessors, (4139), 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 18:26:18,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:18,078 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:26:18,084 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 18:26:18,283 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 18:26:18,284 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 18:26:18,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1078429955, now seen corresponding path program 3 times [2023-08-29 18:26:18,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:18,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914705592] [2023-08-29 18:26:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:18,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:26:18,317 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:26:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:26:18,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:26:18,340 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:26:18,341 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 18:26:18,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 18:26:18,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 18:26:18,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 18:26:18,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 18:26:18,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 18:26:18,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 18:26:18,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 18:26:18,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 18:26:18,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 18:26:18,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 18:26:18,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 18:26:18,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 18:26:18,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 18:26:18,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 18:26:18,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 18:26:18,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 18:26:18,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 18:26:18,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 18:26:18,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 18:26:18,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 18:26:18,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 18:26:18,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 18:26:18,346 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-29 18:26:18,347 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:26:18,347 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:26:18,417 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:26:18,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 472 transitions, 974 flow [2023-08-29 18:26:18,529 INFO L130 PetriNetUnfolder]: 120/935 cut-off events. [2023-08-29 18:26:18,529 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:26:18,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 935 events. 120/935 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5435 event pairs, 1 based on Foata normal form. 0/768 useless extension candidates. Maximal degree in co-relation 646. Up to 16 conditions per place. [2023-08-29 18:26:18,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 416 places, 472 transitions, 974 flow [2023-08-29 18:26:18,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 416 places, 472 transitions, 974 flow [2023-08-29 18:26:18,553 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:26:18,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 416 places, 472 transitions, 974 flow [2023-08-29 18:26:18,553 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 416 places, 472 transitions, 974 flow [2023-08-29 18:26:18,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 472 transitions, 974 flow [2023-08-29 18:26:18,646 INFO L130 PetriNetUnfolder]: 120/935 cut-off events. [2023-08-29 18:26:18,646 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:26:18,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 935 events. 120/935 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5435 event pairs, 1 based on Foata normal form. 0/768 useless extension candidates. Maximal degree in co-relation 646. Up to 16 conditions per place. [2023-08-29 18:26:18,711 INFO L119 LiptonReduction]: Number of co-enabled transitions 143820 [2023-08-29 18:26:22,379 INFO L134 LiptonReduction]: Checked pairs total: 574704 [2023-08-29 18:26:22,379 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-08-29 18:26:22,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:26:22,381 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;@1698c663, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:26:22,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-29 18:26:22,387 INFO L130 PetriNetUnfolder]: 13/65 cut-off events. [2023-08-29 18:26:22,387 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:22,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:22,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:22,388 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 18:26:22,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:22,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1258882608, now seen corresponding path program 1 times [2023-08-29 18:26:22,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:22,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887038985] [2023-08-29 18:26:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:22,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:22,411 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 18:26:22,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:22,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887038985] [2023-08-29 18:26:22,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887038985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:22,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:26:22,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:26:22,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887505059] [2023-08-29 18:26:22,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:22,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:22,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:26:22,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 734 [2023-08-29 18:26:22,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 260 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 408.6666666666667) internal successors, (1226), 3 states have internal predecessors, (1226), 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 18:26:22,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:22,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 734 [2023-08-29 18:26:22,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:27:49,560 INFO L130 PetriNetUnfolder]: 527334/978016 cut-off events. [2023-08-29 18:27:49,561 INFO L131 PetriNetUnfolder]: For 6151/7378 co-relation queries the response was YES. [2023-08-29 18:27:53,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648772 conditions, 978016 events. 527334/978016 cut-off events. For 6151/7378 co-relation queries the response was YES. Maximal size of possible extension queue 18061. Compared 12644861 event pairs, 463987 based on Foata normal form. 99042/966388 useless extension candidates. Maximal degree in co-relation 258775. Up to 667748 conditions per place. [2023-08-29 18:27:59,706 INFO L137 encePairwiseOnDemand]: 690/734 looper letters, 89 selfloop transitions, 2 changer transitions 0/220 dead transitions. [2023-08-29 18:27:59,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 220 transitions, 652 flow [2023-08-29 18:27:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:27:59,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:27:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1354 transitions. [2023-08-29 18:27:59,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6148955495004541 [2023-08-29 18:27:59,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1354 transitions. [2023-08-29 18:27:59,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1354 transitions. [2023-08-29 18:27:59,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:27:59,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1354 transitions. [2023-08-29 18:27:59,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 451.3333333333333) internal successors, (1354), 3 states have internal predecessors, (1354), 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 18:27:59,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 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 18:27:59,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 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 18:27:59,724 INFO L175 Difference]: Start difference. First operand has 214 places, 260 transitions, 550 flow. Second operand 3 states and 1354 transitions. [2023-08-29 18:27:59,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 220 transitions, 652 flow [2023-08-29 18:27:59,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 220 transitions, 652 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:27:59,733 INFO L231 Difference]: Finished difference. Result has 217 places, 220 transitions, 480 flow [2023-08-29 18:27:59,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=217, PETRI_TRANSITIONS=220} [2023-08-29 18:27:59,735 INFO L281 CegarLoopForPetriNet]: 214 programPoint places, 3 predicate places. [2023-08-29 18:27:59,735 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 220 transitions, 480 flow [2023-08-29 18:27:59,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 408.6666666666667) internal successors, (1226), 3 states have internal predecessors, (1226), 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 18:27:59,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:59,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:27:59,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 18:27:59,736 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:27:59,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:59,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2043123018, now seen corresponding path program 1 times [2023-08-29 18:27:59,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:59,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873186061] [2023-08-29 18:27:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:59,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:59,769 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 18:27:59,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:59,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873186061] [2023-08-29 18:27:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873186061] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:27:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970241687] [2023-08-29 18:27:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:59,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:59,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:27:59,793 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 18:27:59,842 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 18:27:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:59,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 18:27:59,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:27:59,930 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 18:27:59,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:27:59,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970241687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:27:59,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:27:59,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 18:27:59,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202969988] [2023-08-29 18:27:59,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:27:59,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:27:59,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:59,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:27:59,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:27:59,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 734 [2023-08-29 18:27:59,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 220 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 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 18:27:59,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:59,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 734 [2023-08-29 18:27:59,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand