./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.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 881804847426e60812f8175456032b889bbad15c60068b15698c7277211e0c6e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 19:58:38,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 19:58:38,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 19:58:38,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 19:58:38,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 19:58:38,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 19:58:38,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 19:58:38,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 19:58:38,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 19:58:38,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 19:58:38,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 19:58:38,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 19:58:38,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 19:58:38,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 19:58:38,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 19:58:38,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 19:58:38,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 19:58:38,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 19:58:38,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 19:58:38,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 19:58:38,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 19:58:38,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 19:58:38,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 19:58:38,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 19:58:38,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 19:58:38,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 19:58:38,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 19:58:38,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 19:58:38,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 19:58:38,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 19:58:38,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 19:58:38,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 19:58:38,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 19:58:38,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 19:58:38,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 19:58:38,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 19:58:38,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 19:58:38,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 19:58:38,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 19:58:38,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 19:58:38,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 19:58:38,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 19:58:38,403 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 19:58:38,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 19:58:38,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 19:58:38,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 19:58:38,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 19:58:38,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 19:58:38,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 19:58:38,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 19:58:38,406 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 19:58:38,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 19:58:38,406 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 19:58:38,407 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 19:58:38,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 19:58:38,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 19:58:38,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 19:58:38,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 19:58:38,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 19:58:38,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 19:58:38,408 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 19:58:38,408 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 19:58:38,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 19:58:38,409 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 19:58:38,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 19:58:38,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 19:58:38,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 19:58:38,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 19:58:38,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 19:58:38,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 19:58:38,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 19:58:38,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 19:58:38,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 19:58:38,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 19:58:38,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 19:58:38,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 19:58:38,411 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 19:58:38,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 19:58:38,412 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 19:58:38,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 881804847426e60812f8175456032b889bbad15c60068b15698c7277211e0c6e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 19:58:38,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 19:58:38,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 19:58:38,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 19:58:38,735 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 19:58:38,735 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 19:58:38,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.i [2023-08-31 19:58:39,837 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 19:58:40,059 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 19:58:40,060 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.i [2023-08-31 19:58:40,077 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60dfbd551/148dc12849f242c2a0bf01c962bd336f/FLAG016e12011 [2023-08-31 19:58:40,090 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60dfbd551/148dc12849f242c2a0bf01c962bd336f [2023-08-31 19:58:40,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 19:58:40,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 19:58:40,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 19:58:40,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 19:58:40,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 19:58:40,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52452b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40, skipping insertion in model container [2023-08-31 19:58:40,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 19:58:40,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 19:58:40,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 19:58:40,409 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 19:58:40,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 19:58:40,496 INFO L208 MainTranslator]: Completed translation [2023-08-31 19:58:40,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40 WrapperNode [2023-08-31 19:58:40,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 19:58:40,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 19:58:40,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 19:58:40,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 19:58:40,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,549 INFO L138 Inliner]: procedures = 161, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-08-31 19:58:40,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 19:58:40,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 19:58:40,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 19:58:40,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 19:58:40,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,588 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 19:58:40,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 19:58:40,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 19:58:40,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 19:58:40,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40" (1/1) ... [2023-08-31 19:58:40,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 19:58:40,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:58:40,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 19:58:40,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 19:58:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 19:58:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 19:58:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 19:58:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 19:58:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 19:58:40,666 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 19:58:40,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 19:58:40,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 19:58:40,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 19:58:40,668 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 19:58:40,777 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 19:58:40,782 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 19:58:40,949 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 19:58:40,955 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 19:58:40,955 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-31 19:58:40,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 07:58:40 BoogieIcfgContainer [2023-08-31 19:58:40,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 19:58:40,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 19:58:40,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 19:58:40,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 19:58:40,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 07:58:40" (1/3) ... [2023-08-31 19:58:40,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df93657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 07:58:40, skipping insertion in model container [2023-08-31 19:58:40,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:58:40" (2/3) ... [2023-08-31 19:58:40,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df93657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 07:58:40, skipping insertion in model container [2023-08-31 19:58:40,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 07:58:40" (3/3) ... [2023-08-31 19:58:40,963 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_01-idx_rc.i [2023-08-31 19:58:40,969 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 19:58:40,977 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 19:58:40,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-31 19:58:40,978 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 19:58:41,021 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 19:58:41,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 61 transitions, 127 flow [2023-08-31 19:58:41,103 INFO L130 PetriNetUnfolder]: 2/60 cut-off events. [2023-08-31 19:58:41,105 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 19:58:41,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 60 events. 2/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2023-08-31 19:58:41,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 61 transitions, 127 flow [2023-08-31 19:58:41,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 60 transitions, 123 flow [2023-08-31 19:58:41,117 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 19:58:41,134 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 60 transitions, 123 flow [2023-08-31 19:58:41,145 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 60 transitions, 123 flow [2023-08-31 19:58:41,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 60 transitions, 123 flow [2023-08-31 19:58:41,163 INFO L130 PetriNetUnfolder]: 2/60 cut-off events. [2023-08-31 19:58:41,164 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 19:58:41,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 60 events. 2/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2023-08-31 19:58:41,166 INFO L119 LiptonReduction]: Number of co-enabled transitions 714 [2023-08-31 19:58:42,027 INFO L134 LiptonReduction]: Checked pairs total: 2321 [2023-08-31 19:58:42,028 INFO L136 LiptonReduction]: Total number of compositions: 37 [2023-08-31 19:58:42,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 19:58:42,048 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;@3be315fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 19:58:42,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-31 19:58:42,051 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2023-08-31 19:58:42,051 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 19:58:42,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:58:42,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 19:58:42,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 19:58:42,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:58:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2090234403, now seen corresponding path program 1 times [2023-08-31 19:58:42,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:58:42,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593107378] [2023-08-31 19:58:42,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:58:42,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:58:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:58:42,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:58:42,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:58:42,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593107378] [2023-08-31 19:58:42,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593107378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:58:42,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 19:58:42,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 19:58:42,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984428515] [2023-08-31 19:58:42,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:58:42,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 19:58:42,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:58:42,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 19:58:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 19:58:42,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 98 [2023-08-31 19:58:42,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2023-08-31 19:58:42,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:58:42,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 98 [2023-08-31 19:58:42,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:58:42,400 INFO L130 PetriNetUnfolder]: 21/75 cut-off events. [2023-08-31 19:58:42,400 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 19:58:42,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 75 events. 21/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 218 event pairs, 20 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 119. Up to 54 conditions per place. [2023-08-31 19:58:42,403 INFO L137 encePairwiseOnDemand]: 95/98 looper letters, 12 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-31 19:58:42,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 81 flow [2023-08-31 19:58:42,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 19:58:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 19:58:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2023-08-31 19:58:42,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2023-08-31 19:58:42,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2023-08-31 19:58:42,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2023-08-31 19:58:42,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:58:42,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2023-08-31 19:58:42,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2023-08-31 19:58:42,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2023-08-31 19:58:42,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2023-08-31 19:58:42,432 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 51 flow. Second operand 3 states and 180 transitions. [2023-08-31 19:58:42,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 81 flow [2023-08-31 19:58:42,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 19:58:42,436 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 62 flow [2023-08-31 19:58:42,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-31 19:58:42,440 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-31 19:58:42,441 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 62 flow [2023-08-31 19:58:42,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2023-08-31 19:58:42,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:58:42,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:58:42,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 19:58:42,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 19:58:42,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:58:42,449 INFO L85 PathProgramCache]: Analyzing trace with hash 431631986, now seen corresponding path program 1 times [2023-08-31 19:58:42,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:58:42,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279111337] [2023-08-31 19:58:42,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:58:42,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:58:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:58:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:58:42,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:58:42,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279111337] [2023-08-31 19:58:42,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279111337] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:58:42,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812025396] [2023-08-31 19:58:42,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:58:42,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:58:42,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:58:42,575 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) [2023-08-31 19:58:42,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 19:58:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:58:42,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 19:58:42,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:58:42,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 19:58:42,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 19:58:42,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812025396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:58:42,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 19:58:42,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-31 19:58:42,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887355696] [2023-08-31 19:58:42,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:58:42,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 19:58:42,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:58:42,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 19:58:42,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 19:58:42,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2023-08-31 19:58:42,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-08-31 19:58:42,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:58:42,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2023-08-31 19:58:42,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:58:42,774 INFO L130 PetriNetUnfolder]: 57/164 cut-off events. [2023-08-31 19:58:42,788 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 19:58:42,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 164 events. 57/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 667 event pairs, 23 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 301. Up to 80 conditions per place. [2023-08-31 19:58:42,791 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 27 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-08-31 19:58:42,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 154 flow [2023-08-31 19:58:42,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 19:58:42,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 19:58:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2023-08-31 19:58:42,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360544217687075 [2023-08-31 19:58:42,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 187 transitions. [2023-08-31 19:58:42,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 187 transitions. [2023-08-31 19:58:42,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:58:42,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 187 transitions. [2023-08-31 19:58:42,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2023-08-31 19:58:42,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2023-08-31 19:58:42,811 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2023-08-31 19:58:42,811 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 62 flow. Second operand 3 states and 187 transitions. [2023-08-31 19:58:42,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 154 flow [2023-08-31 19:58:42,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 19:58:42,812 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 110 flow [2023-08-31 19:58:42,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2023-08-31 19:58:42,813 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-31 19:58:42,813 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 110 flow [2023-08-31 19:58:42,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-08-31 19:58:42,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:58:42,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:58:42,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-31 19:58:43,018 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 [2023-08-31 19:58:43,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 19:58:43,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:58:43,019 INFO L85 PathProgramCache]: Analyzing trace with hash 998058296, now seen corresponding path program 1 times [2023-08-31 19:58:43,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:58:43,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013667105] [2023-08-31 19:58:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:58:43,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:58:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:58:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:58:43,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:58:43,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013667105] [2023-08-31 19:58:43,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013667105] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:58:43,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177432556] [2023-08-31 19:58:43,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:58:43,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:58:43,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:58:43,082 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) [2023-08-31 19:58:43,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 19:58:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:58:43,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 19:58:43,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:58:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 19:58:43,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 19:58:43,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177432556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:58:43,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 19:58:43,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-31 19:58:43,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136868072] [2023-08-31 19:58:43,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:58:43,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 19:58:43,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:58:43,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 19:58:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 19:58:43,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 98 [2023-08-31 19:58:43,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-08-31 19:58:43,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:58:43,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 98 [2023-08-31 19:58:43,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:58:43,220 INFO L130 PetriNetUnfolder]: 55/165 cut-off events. [2023-08-31 19:58:43,221 INFO L131 PetriNetUnfolder]: For 63/66 co-relation queries the response was YES. [2023-08-31 19:58:43,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 165 events. 55/165 cut-off events. For 63/66 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 669 event pairs, 19 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 372. Up to 93 conditions per place. [2023-08-31 19:58:43,223 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 21 selfloop transitions, 7 changer transitions 2/40 dead transitions. [2023-08-31 19:58:43,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 198 flow [2023-08-31 19:58:43,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 19:58:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 19:58:43,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2023-08-31 19:58:43,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2023-08-31 19:58:43,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2023-08-31 19:58:43,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2023-08-31 19:58:43,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:58:43,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2023-08-31 19:58:43,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2023-08-31 19:58:43,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2023-08-31 19:58:43,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2023-08-31 19:58:43,227 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 110 flow. Second operand 3 states and 175 transitions. [2023-08-31 19:58:43,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 198 flow [2023-08-31 19:58:43,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 19:58:43,229 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 154 flow [2023-08-31 19:58:43,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2023-08-31 19:58:43,230 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-31 19:58:43,230 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 154 flow [2023-08-31 19:58:43,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-08-31 19:58:43,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:58:43,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:58:43,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 19:58:43,435 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 [2023-08-31 19:58:43,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 19:58:43,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:58:43,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1315177308, now seen corresponding path program 1 times [2023-08-31 19:58:43,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:58:43,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369935065] [2023-08-31 19:58:43,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:58:43,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:58:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:58:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:58:43,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:58:43,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369935065] [2023-08-31 19:58:43,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369935065] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:58:43,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514978709] [2023-08-31 19:58:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:58:43,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:58:43,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:58:43,511 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) [2023-08-31 19:58:43,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 19:58:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:58:43,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 19:58:43,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:58:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 19:58:43,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 19:58:43,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514978709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:58:43,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 19:58:43,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-31 19:58:43,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556904743] [2023-08-31 19:58:43,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:58:43,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 19:58:43,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:58:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 19:58:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 19:58:43,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2023-08-31 19:58:43,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-08-31 19:58:43,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:58:43,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2023-08-31 19:58:43,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:58:43,632 INFO L130 PetriNetUnfolder]: 61/180 cut-off events. [2023-08-31 19:58:43,632 INFO L131 PetriNetUnfolder]: For 139/144 co-relation queries the response was YES. [2023-08-31 19:58:43,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 180 events. 61/180 cut-off events. For 139/144 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 744 event pairs, 18 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 486. Up to 107 conditions per place. [2023-08-31 19:58:43,634 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 19 selfloop transitions, 7 changer transitions 10/46 dead transitions. [2023-08-31 19:58:43,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 272 flow [2023-08-31 19:58:43,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 19:58:43,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 19:58:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2023-08-31 19:58:43,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2023-08-31 19:58:43,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2023-08-31 19:58:43,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2023-08-31 19:58:43,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:58:43,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2023-08-31 19:58:43,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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) [2023-08-31 19:58:43,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2023-08-31 19:58:43,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2023-08-31 19:58:43,638 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 154 flow. Second operand 3 states and 177 transitions. [2023-08-31 19:58:43,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 272 flow [2023-08-31 19:58:43,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 19:58:43,641 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 172 flow [2023-08-31 19:58:43,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-08-31 19:58:43,642 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-31 19:58:43,642 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 172 flow [2023-08-31 19:58:43,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-08-31 19:58:43,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:58:43,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:58:43,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 19:58:43,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:58:43,848 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 19:58:43,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:58:43,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1886627979, now seen corresponding path program 1 times [2023-08-31 19:58:43,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:58:43,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667368305] [2023-08-31 19:58:43,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:58:43,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:58:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:58:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:58:43,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:58:43,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667368305] [2023-08-31 19:58:43,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667368305] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:58:43,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118658916] [2023-08-31 19:58:43,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:58:43,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:58:43,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:58:43,884 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) [2023-08-31 19:58:43,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 19:58:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:58:43,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 19:58:43,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:58:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:58:43,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 19:58:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:58:43,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118658916] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 19:58:43,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 19:58:43,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-31 19:58:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543604876] [2023-08-31 19:58:43,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 19:58:43,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 19:58:43,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:58:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 19:58:43,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 19:58:43,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 98 [2023-08-31 19:58:43,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 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) [2023-08-31 19:58:43,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:58:43,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 98 [2023-08-31 19:58:43,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:58:44,029 INFO L130 PetriNetUnfolder]: 31/144 cut-off events. [2023-08-31 19:58:44,029 INFO L131 PetriNetUnfolder]: For 167/175 co-relation queries the response was YES. [2023-08-31 19:58:44,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 144 events. 31/144 cut-off events. For 167/175 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 640 event pairs, 15 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 395. Up to 82 conditions per place. [2023-08-31 19:58:44,030 INFO L137 encePairwiseOnDemand]: 95/98 looper letters, 16 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-08-31 19:58:44,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 226 flow [2023-08-31 19:58:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 19:58:44,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 19:58:44,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2023-08-31 19:58:44,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5850340136054422 [2023-08-31 19:58:44,032 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 344 transitions. [2023-08-31 19:58:44,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 344 transitions. [2023-08-31 19:58:44,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:58:44,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 344 transitions. [2023-08-31 19:58:44,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 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) [2023-08-31 19:58:44,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 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) [2023-08-31 19:58:44,035 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 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) [2023-08-31 19:58:44,035 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 172 flow. Second operand 6 states and 344 transitions. [2023-08-31 19:58:44,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 226 flow [2023-08-31 19:58:44,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 19:58:44,038 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 194 flow [2023-08-31 19:58:44,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-31 19:58:44,039 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-08-31 19:58:44,039 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 194 flow [2023-08-31 19:58:44,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 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) [2023-08-31 19:58:44,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:58:44,039 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:58:44,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 19:58:44,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:58:44,244 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 19:58:44,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:58:44,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1718890218, now seen corresponding path program 2 times [2023-08-31 19:58:44,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:58:44,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616223553] [2023-08-31 19:58:44,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:58:44,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:58:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:58:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:58:44,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:58:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616223553] [2023-08-31 19:58:44,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616223553] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:58:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618282430] [2023-08-31 19:58:44,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 19:58:44,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:58:44,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:58:44,326 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) [2023-08-31 19:58:44,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 19:58:44,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 19:58:44,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 19:58:44,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 19:58:44,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:58:44,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:58:44,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 19:58:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:58:44,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618282430] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 19:58:44,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 19:58:44,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-31 19:58:44,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704191952] [2023-08-31 19:58:44,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 19:58:44,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 19:58:44,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:58:44,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 19:58:44,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-31 19:58:44,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 98 [2023-08-31 19:58:44,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 194 flow. Second operand has 12 states, 12 states have (on average 55.416666666666664) internal successors, (665), 12 states have internal predecessors, (665), 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) [2023-08-31 19:58:44,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:58:44,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 98 [2023-08-31 19:58:44,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:58:44,564 INFO L130 PetriNetUnfolder]: 31/150 cut-off events. [2023-08-31 19:58:44,564 INFO L131 PetriNetUnfolder]: For 142/150 co-relation queries the response was YES. [2023-08-31 19:58:44,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 150 events. 31/150 cut-off events. For 142/150 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 637 event pairs, 15 based on Foata normal form. 6/148 useless extension candidates. Maximal degree in co-relation 376. Up to 82 conditions per place. [2023-08-31 19:58:44,566 INFO L137 encePairwiseOnDemand]: 95/98 looper letters, 16 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2023-08-31 19:58:44,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 284 flow [2023-08-31 19:58:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 19:58:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 19:58:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 677 transitions. [2023-08-31 19:58:44,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5756802721088435 [2023-08-31 19:58:44,569 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 677 transitions. [2023-08-31 19:58:44,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 677 transitions. [2023-08-31 19:58:44,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:58:44,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 677 transitions. [2023-08-31 19:58:44,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 56.416666666666664) internal successors, (677), 12 states have internal predecessors, (677), 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) [2023-08-31 19:58:44,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 98.0) internal successors, (1274), 13 states have internal predecessors, (1274), 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) [2023-08-31 19:58:44,574 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 98.0) internal successors, (1274), 13 states have internal predecessors, (1274), 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) [2023-08-31 19:58:44,574 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 194 flow. Second operand 12 states and 677 transitions. [2023-08-31 19:58:44,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 44 transitions, 284 flow [2023-08-31 19:58:44,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 44 transitions, 270 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-31 19:58:44,579 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 264 flow [2023-08-31 19:58:44,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=264, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2023-08-31 19:58:44,582 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 31 predicate places. [2023-08-31 19:58:44,582 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 264 flow [2023-08-31 19:58:44,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.416666666666664) internal successors, (665), 12 states have internal predecessors, (665), 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) [2023-08-31 19:58:44,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:58:44,583 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:58:44,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 19:58:44,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:58:44,788 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 19:58:44,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:58:44,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1090116874, now seen corresponding path program 3 times [2023-08-31 19:58:44,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:58:44,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175848578] [2023-08-31 19:58:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:58:44,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:58:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 19:58:44,811 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 19:58:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 19:58:44,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 19:58:44,850 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 19:58:44,851 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-08-31 19:58:44,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-08-31 19:58:44,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-08-31 19:58:44,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-31 19:58:44,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-08-31 19:58:44,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-08-31 19:58:44,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-08-31 19:58:44,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 19:58:44,860 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2023-08-31 19:58:44,864 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 19:58:44,865 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 19:58:44,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 07:58:44 BasicIcfg [2023-08-31 19:58:44,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 19:58:44,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 19:58:44,889 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 19:58:44,889 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 19:58:44,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 07:58:40" (3/4) ... [2023-08-31 19:58:44,891 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-31 19:58:44,891 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 19:58:44,892 INFO L158 Benchmark]: Toolchain (without parser) took 4797.93ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 51.8MB in the beginning and 67.3MB in the end (delta: -15.5MB). Peak memory consumption was 933.3kB. Max. memory is 16.1GB. [2023-08-31 19:58:44,892 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 19:58:44,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.00ms. Allocated memory is still 77.6MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 47.2kB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-31 19:58:44,892 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.11ms. Allocated memory is still 77.6MB. Free memory was 51.5MB in the beginning and 49.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 19:58:44,893 INFO L158 Benchmark]: Boogie Preprocessor took 44.11ms. Allocated memory is still 77.6MB. Free memory was 49.5MB in the beginning and 48.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 19:58:44,893 INFO L158 Benchmark]: RCFGBuilder took 360.81ms. Allocated memory is still 77.6MB. Free memory was 48.0MB in the beginning and 36.4MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-31 19:58:44,893 INFO L158 Benchmark]: TraceAbstraction took 3930.40ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 35.7MB in the beginning and 68.1MB in the end (delta: -32.4MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2023-08-31 19:58:44,893 INFO L158 Benchmark]: Witness Printer took 2.68ms. Allocated memory is still 94.4MB. Free memory was 68.1MB in the beginning and 67.3MB in the end (delta: 837.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 19:58:44,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.00ms. Allocated memory is still 77.6MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 47.2kB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.11ms. Allocated memory is still 77.6MB. Free memory was 51.5MB in the beginning and 49.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.11ms. Allocated memory is still 77.6MB. Free memory was 49.5MB in the beginning and 48.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 360.81ms. Allocated memory is still 77.6MB. Free memory was 48.0MB in the beginning and 36.4MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3930.40ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 35.7MB in the beginning and 68.1MB in the end (delta: -32.4MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Witness Printer took 2.68ms. Allocated memory is still 94.4MB. Free memory was 68.1MB in the beginning and 67.3MB in the end (delta: 837.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9s, 62 PlacesBefore, 27 PlacesAfterwards, 60 TransitionsBefore, 24 TransitionsAfterwards, 714 CoEnabledTransitionPairs, 4 FixpointIterations, 16 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 2321 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1009, independent: 843, independent conditional: 0, independent unconditional: 843, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 383, independent: 350, independent conditional: 0, independent unconditional: 350, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1009, independent: 493, independent conditional: 0, independent unconditional: 493, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 383, unknown conditional: 0, unknown unconditional: 383] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 683]: Data race detected Data race detected The following path leads to a data race: [L679] 0 int data; [L680] 0 pthread_mutex_t m[10]; [L688] 0 int i = 0; VAL [data=0, i=0, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=1, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=2, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=3, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=4, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=5, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=6, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=7, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=8, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=9, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=10, m={1:0}] [L688] COND FALSE 0 !(i < 10) [L690] 0 pthread_t id; [L691] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, data=0, i=10, id={2:0}, m={1:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L693] 0 data++ VAL [arg={0:0}, arg={0:0}, data=0, i=10, id={2:0}, m={1:0}, pthread_mutex_lock(&m[4])=0] [L683] 1 data++ VAL [arg={0:0}, arg={0:0}, data=0, m={1:0}] [L693] 0 data++ VAL [arg={0:0}, arg={0:0}, data++=0, data++=241, data=1, i=10, id={2:0}, m={1:0}] [L683] 1 data++ VAL [arg={0:0}, arg={0:0}, data=1, m={1:0}] Now there is a data race on ~data~0 between C: data++ [693] and C: data++ [683] - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 79 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 157 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 370 IncrementalHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 36 mSDtfsCounter, 370 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=6, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 427 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 3/39 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-31 19:58:44,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE